: Moldy AC - opinions please



JulieB
04-16-13, 04:11 PM
Hi, I just purchased my first Cadillac in January. Really love the ATS. After about a month my air conditioning started to smell of mold. I have had it in and out of service and made many phone calls to the dealership. They are minimizing the problem telling me there is mold everywhere, even in your home. Which there is, but if you can smell it, there is an abundance of it and therefore a problem. The service manager told me he drove the same car and he noticed a smell too. I did not smell anything in the two loaners I drove. Also, today the service manager told me that GM has a problem with their air conditioning smelling of mold. I don't buy that, and I don't think GM would really like him telling customers that. Any thoughts?

Hoosier Daddy
04-16-13, 04:25 PM
Hi, I just purchased my first Cadillac in January. Really love the ATS. After about a month my air conditioning started to smell of mold. I have had it in and out of service and made many phone calls to the dealership. They are minimizing the problem telling me there is mold everywhere, even in your home. Which there is, but if you can smell it, there is an abundance of it and therefore a problem. The service manager told me he drove the same car and he noticed a smell too. I did not smell anything in the two loaners I drove. Also, today the service manager told me that GM has a problem with their air conditioning smelling of mold. I don't buy that, and I don't think GM would really like him telling customers that. Any thoughts?
It's impossible to say based just on a forum post if there is something wrong with the car but it certainly sounds like there is.

It sounds like you may have a dealer problem. There are good dealers and bad dealers and good dealers having a bad day. Fortunately Cadillac assigns support people to these forums to help in these situations.

Here is a link in these forums to send them a private message: http://www.cadillacforums.com/forums/private.php?do=newpm&u=105125 (http://www.cadillacforums.com/forums/private.php?do=newpm&u=105125)

JulieB
04-16-13, 05:00 PM
Thanks Hoosier, there is a lot more to the story, that was the short version. I don't feel they have been honest since the beginning of the problem. They said is was the drain, but then I would have had water in the cabin and there was not, they have installed an after blow but it still smells, the mold is already in the system. Now they want to spray something else in it on Thursday but they are calling it a temporary fix. I don't think I should have to live with this smell in a new car as they are trying to convince me it's ok.

cullama213
05-30-13, 10:18 PM
Is it moldy all the time? Or just when it first starts?

My AC smells funky when it first starts, but then is normal about five seconds later.

pever
05-30-13, 10:42 PM
The condensate drains to the outside. If that line is blocked, be it by dirt or insects, etc., then you get problems of a primordial soup developing... Perhaps even at risk of humidifier fever type problems. If you have a frail immune system this is especially "not good". Get a good dealer to check the system.

ATS_maxblack
05-31-13, 06:41 AM
I am also noticing a mold stink when I first start the car. I have tried some tests by turning the ac off before shutting the car off and it reduces or eliminates the smell when I get back in. This result tells me that there might be an issue with the system condensation or moisture left over after shutdown.

Bertha D Blues
05-31-13, 08:17 AM
First, I don't have a problem with mold in my ATS. If you suspect that you do, the only way to be certain that it's mold is to test for it. You can get mold test kits at the home center and you'll need two of them. You want to test the air inside the car, but also, the ambiant air outside. Compare the results of the two tests. If the mold level is higher inside the car then it should be sanitized. If the inside and outside mold levels are the same (there's mold everywhere), then something else is causing the smell. About 10 years ago I had mold in my truck, which I eliminated with a product called Frigifresh. I sprayed it directly into the plenum intake under the dash. I still have that truck but mold never returned. Bert

Cadillac Cust Svc
05-31-13, 10:15 AM
First, I don't have a problem with mold in my ATS. If you suspect that you do, the only way to be certain that it's mold is to test for it. You can get mold test kits at the home center and you'll need two of them. You want to test the air inside the car, but also, the ambiant air outside. Compare the results of the two tests. If the mold level is higher inside the car then it should be sanitized. If the inside and outside mold levels are the same (there's mold everywhere), then something else is causing the smell. About 10 years ago I had mold in my truck, which I eliminated with a product called Frigifresh. I sprayed it directly into the plenum intake under the dash. I still have that truck but mold never returned. Bert

Hello Bertha D Blues,

Thanks for sharing this knowledge on the forum. I am sure the other members appreciate your insight on the mold issue and what you did you solve it!

Regards,

Laura M.
Cadillac Customer Service

amunderdog
05-31-13, 10:53 AM
http://youtu.be/VrVc_FXrbHY

Cadillac Cust Svc
05-31-13, 10:54 AM
I am also noticing a mold stink when I first start the car. I have tried some tests by turning the ac off before shutting the car off and it reduces or eliminates the smell when I get back in. This result tells me that there might be an issue with the system condensation or moisture left over after shutdown.

Hello ATS_maxblack,

I am sorry you are also experiencing a mold smell when you start your vehicle. Bertha D Blues did offer some good insight on getting a mold test kit with following procedures. Please reach out to us if you would like to discuss any concerns or issues.

Regards,

Laura M.
Cadillac Customer Service

GL13ATS
06-09-13, 11:29 AM
I am also having the funky smell on start up from the air conditioning. It clears up after 10 seconds or so, but I agree we should not be having this issue from brand new cars. Please keep us posted on what you find out from the dealers.

cdp
06-09-13, 12:18 PM
I have the musty smell upon start up as well. Goes away after a few seconds. Will ask dealer to look into it at my next service.

NoVA_ATS
07-12-13, 10:21 AM
Mine started doing it too after a bad storm. History with other GM's (2010 Buick Lacrosse, 2006 Impala, etc.) tells me its the Cabin Air filter and it needs to be replaced. I ordered one from RockAuto and will swap out as soon as it arrives. When I have results (hopefully next week), I will post.

Cadillac Cust Svc
07-12-13, 11:43 AM
Mine started doing it too after a bad storm. History with other GM's (2010 Buick Lacrosse, 2006 Impala, etc.) tells me its the Cabin Air filter and it needs to be replaced. I ordered one from RockAuto and will swap out as soon as it arrives. When I have results (hopefully next week), I will post.

Hello NoVA_ATS,

I apologize for any trouble you have been having with your vehicle and its moldy air conditioning. I see you have ordered a part to switch out the cabin air filter. I will be sure to look out for your update on the situation. If you would like to further discuss any concern or if you have questions, don't hesitate to reach out to us via private message.

Sincerely,

Laura M.
Cadillac Customer Care

bluecrayon
07-16-13, 11:02 PM
Same issue here....recently noticed it with hot weather. Parking after using a/c then upon startup, smells funny then goes away after 10 seconds.

NoVA_ATS
07-21-13, 10:04 AM
So I replaced the cabin air filter, and it definitely got better. Not completely fixed, but maybe it just needs to run a few times.

The part number for the air filter is CF185. I bought mine from Rock Auto for approx. $13. I think you can get the filter replaced by Cadillac for free, but I live too far away for take it there for a small thing like this, and it is pretty simple, once you figure it out...below I have put directions so you don't have to waste too much time.

To replace the cabin air filter, remote the screw in the middle of the CD player. It is a phillips (in all reality it is just a pin). Once you get that pin out, you will notice that there is a washer looking piece of plastic still there, it is the remainder of the clip assembly. That needs to be removed carefully. If you are not able to get it out without tearing it up, take off your trim (the replaceable silver/plum/woodgrain) by taking off two 7mm bolts on the right side, behind the right compartment, and push straight down on the clip to ensure no damage is done to it. Once you have the pin out, the entire CD player/shelf assembly will come straight out towards you. Once you have that out, you will see a black compartments that says DOWN on it. That is the cabin air filter door. Remove it by depressing the clips, and take the airfilter out. Make sure to note which way the airflow is going. Pop the new one in, and put the car back together in the exact reverse.

Good luck!

unclemoose
07-23-13, 09:56 PM
I have the same issue. It's only on start up, but is most definitely a moldy/musty ac smell that goes away after a few seconds. Did anyone else get this issue resolved? Did it come back?

GL13ATS
08-27-13, 07:28 PM
Update: took my car into the dealer in FWB Florida and asked them to change out the cabin air filter. They kept it for a day, but when I picked it up the only thing they did was reprogrammed the HVAC system to “enable after blow feature.” Tech said they called corporate and this was the only fix. They did not change out the filter.
Waiting to see what affect if any this fix has. Basically, seems they realize there is a problem and came up with the after blow feature to dry out the system after turning the car off. (even though they’re saying there is no problem).
If this doesn’t work, I will change out the cabin air filter myself (thanks for the directions NoVA_ATS posted). I may do it anyway just to see what it looks/smells like.

BriansZ
08-27-13, 07:43 PM
We have this same problem. The cadillac dealer set the fan to turn on after the car is off and sprayed something in the system. It was fine for a couple weeks but has returned. We like the car, but this is unacceptable. And it does go away after startup, but we shouldn't have to deal with this on a new $40k+ car. My wife recently made another appointment to get this looked at but judging from this thread I see others have the same problem.

JavaGirl
08-28-13, 01:30 AM
This is what I do to take care of it: when I get within a minute of my destination, I turn off the AC button in the middle of CUE, but leave the fan on at least 1/2 blast for the last minute to blow out the vents without any chilled air being used. Then when I use the car the next time, all is okay.

This is not nice for a luxury automobile, but it does give a work-around...

Illini333
09-02-13, 07:43 AM
I have the same issue as well for the first 5 seconds when I start the car. I have never had this issue with a car before and am surprised a luxury car would have it. I have noticed if I shut off the a/c a minute before my destination and put the fan on full blast it seems to help when I start my car. The issue is I live in Austin where the temp is always around or above 100 so it gets a little warm in the car. Frustrating.......

flycaster
09-04-13, 05:25 PM
Got the same problem here in SoFL - smell on start up, but disappears after a few seconds. Will bring it up to the dealer tomorrow.

NVHGuru
09-04-13, 09:32 PM
I'm not sure if this is the same issue, but I have a moldy smell which seems worst when I get in the car. I thought it may be just the "new car smell", but I have had my ATS for 3 months and it is not getting any better. It may seem strange, but I think it is coming from the leather steering wheel cover as I can smell it on my hands after driving for a while. I will investigate closely for a few more days then talk to my dealer. Has anyone else noticed the same thing?

briterco
09-06-13, 04:43 PM
We purchased the ATS Nov 2012. Started noticing the same musty smell this summer. Took it in to the dealer (we've bought 10 Caddies from them). First attempt they tried to clean out the HVAC and the deodorizer they sprayed made it smell worse. The musty smell never went away. Took it back last week. They have had to take out the WHOLE dash, center console and passenger seat out. (that is our car in the pic!) They are replacing something plus all the insulation because some condensation has soaked in. The service mechanic we spoke with said it looks like a design flaw where a line can get pushed into a condensation pan internally so it isn't draining properly and water sits there, getting moldy. He also said it can't be seen when it is reassembled so he can't be sure it the line sits correctly or not. Sounds like it might come back again.

Talking to the GM of the dealership, he said one of the other employees there also mentioned having the same smell. Sounds like a major design flaw and if the fix is to to the disassembly like they've done to our ATS, that is a BIG problem for GM!

142401

GJB
09-06-13, 05:32 PM
You are a brave person: :suspense: I would have used air freshener trees before I let them do that to my car. I'm interested if they get humpty back together right, please let us know.

GJB
09-06-13, 08:21 PM
So I replaced the cabin air filter, and it definitely got better. Not completely fixed, but maybe it just needs to run a few times.

The part number for the air filter is CF185. I bought mine from Rock Auto for approx. $13. I think you can get the filter replaced by Cadillac for free, but I live too far away for take it there for a small thing like this, and it is pretty simple, once you figure it out...below I have put directions so you don't have to waste too much time.

To replace the cabin air filter, remote the screw in the middle of the CD player. It is a phillips (in all reality it is just a pin). Once you get that pin out, you will notice that there is a washer looking piece of plastic still there, it is the remainder of the clip assembly. That needs to be removed carefully. If you are not able to get it out without tearing it up, take off your trim (the replaceable silver/plum/woodgrain) by taking off two 7mm bolts on the right side, behind the right compartment, and push straight down on the clip to ensure no damage is done to it. Once you have the pin out, the entire CD player/shelf assembly will come straight out towards you. Once you have that out, you will see a black compartments that says DOWN on it. That is the cabin air filter door. Remove it by depressing the clips, and take the airfilter out. Make sure to note which way the airflow is going. Pop the new one in, and put the car back together in the exact reverse.

Good luck!

Thanks NoVa I was finally able to take out the cd player I never use and get some shelf space and not listen to it spin up when I open the door to boot. I just left the Phillips pin out because that shelf is in there pretty snug and this way its now just a quick filter replacement. I was surprised how dirty mine was in less than 4 months.


UPDATE. Had to put the CD player back in. When I went to drive the car after taking out the player CUE Screen stayed blank, slid the player back in and works great. And that spin sound when you open the door is not the CD player (sounds like its coming from there) so it must be the CUE.

briterco
09-07-13, 02:09 PM
You are a brave person: :suspense: I would have used air freshener trees before I let them do that to my car. I'm interested if they get humpty back together right, please let us know.

We shall see. Didn't actually know the procedure was going to be this extreme. When we went there yesterday, they kept saying "you really don't want to see it".... and they might not have liked that we took a pic. The dealership has been really good so I think they'll get humpty back together. If not, we won a lemon case years ago over an XLR and aren't afraid to go down that path again if we have to.

Robb63
09-07-13, 04:55 PM
Mine just started having this "smell" issue this week. It was two days after I got the car washed (not that I haven't had it washed before!), but it hasn't rained this week so that would be the last time the car got wet (if that is a cause). Mine is a terrible moldy smell for about ten seconds after starting the car with the A/C on.
Any updates from folks dealing with the issue?? I'm going to have to take it to the dealer this week.

GJB
09-07-13, 08:45 PM
We shall see. Didn't actually know the procedure was going to be this extreme. When we went there yesterday, they kept saying "you really don't want to see it".... and they might not have liked that we took a pic. The dealership has been really good so I think they'll get humpty back together. If not, we won a lemon case years ago over an XLR and aren't afraid to go down that path again if we have to.

Briterco, I hear you on the ATS "Extreme Makeover Edition". You have the right attitude, you have been a with them for years and it looks like they are willing to go to "extremes" to fix your issue. You know you have options if things don't go well and that picture can't hurt your case if it went to that (if the dash don't fit you must acquit) makes no sense just had to throw that in. Good on you.

Cadillac Cust Svc
09-07-13, 08:52 PM
Hello everyone,

I see a lot of members on this thread are experiencing this issue. I would be more than happy to assist you in working with the dealership in regards to this issue. I have documented your concerns and forwarded it to a group in our organization. Please private message Laura or myself if you have any concerns regarding this issue. The information we would need would be your name, contact info, VIN, mileage, and dealership you are working with. You can also reach out to us via email at socialmedia@gm.com. If you do send an email, please be sure to include “ATTN GREG OR LAURA” in the subject line so that it gets delivered straight to one of us. Thank you very much for your time.

Gregory W.
Cadillac Customer Care

GJB
09-10-13, 11:18 AM
We shall see. Didn't actually know the procedure was going to be this extreme. When we went there yesterday, they kept saying "you really don't want to see it".... and they might not have liked that we took a pic. The dealership has been really good so I think they'll get humpty back together. If not, we won a lemon case years ago over an XLR and aren't afraid to go down that path again if we have to.

So did the service rep come out and tell you sorry, but we did everything we could but we lost her........

Bryce2.0T
09-10-13, 11:43 PM
Theres not much to do folks... shitty design flaw, thats all

BriansZ
09-11-13, 11:48 AM
My wife's car has been in the dealership since Monday due to this. The first time in I thought it might just be a clogged drain tube, but it seems more complicated. While I agree with Bryce that it's a design flaw, hopefully Cadillac is able to come up with a solution.

Others have mentioned turning the AC compressor off and just running the fan the last few minutes eliminates the odor, so a software update could do that automatically after shutoff. Or, if water is trapped within the system maybe an additional drain will need to be added, but I'm sure once engineering is able to look at it they will get it fixed.

On the other hand, I'm glad this car is a lease. Plus we've had a 3.6 as a loaner, so it's been a good opportunity to compare this car with our 2.0T.

GJB
09-11-13, 11:59 AM
I know they did an HVAC update does anyone know if they updated the program for the fan to run?

BriansZ, So what do you think of your loaner 3.6?

unclemoose
09-11-13, 12:05 PM
I had the hvac update and my smell continued. My guess it's a drainage issue that needs to be fixed, the fan run on would be a short term band aid.

GJB
09-11-13, 12:21 PM
Agree on the short term band aid. My AC sure drains a lot of water so it's not cloged or it would drain/leak into the cabin which would really give a musty smell all the time.

unclemoose
09-11-13, 12:25 PM
Yeah, good point, if it's fully clogged it would eventually get into the ductwork or cabin. It will be interesting to see what the solution its

Cadillac Cust Svc
09-11-13, 02:45 PM
My wife's car has been in the dealership since Monday due to this. The first time in I thought it might just be a clogged drain tube, but it seems more complicated. While I agree with Bryce that it's a design flaw, hopefully Cadillac is able to come up with a solution.

Others have mentioned turning the AC compressor off and just running the fan the last few minutes eliminates the odor, so a software update could do that automatically after shutoff. Or, if water is trapped within the system maybe an additional drain will need to be added, but I'm sure once engineering is able to look at it they will get it fixed.

On the other hand, I'm glad this car is a lease. Plus we've had a 3.6 as a loaner, so it's been a good opportunity to compare this car with our 2.0T.

Hello BriansZ,

I am sorry your wife's vehicle has been at the dealership for a few days trying to resolve the moldy AC concern. Please keep us posted on the outcome after you hear from the dealer. If you would like to further discuss your current situation with us or ever have additional concerns or questions, don't hesitate to contact us.

Sincerely,

Laura M.
Cadillac Customer Care

JavaGirl
09-11-13, 04:16 PM
I don't see how it could be liquid pooling up. If it were, it does not seem that a fan blast for a minute would eliminate it. It seems to me to be just a thin mist of AC condensation that must not be allowed to remain in the duct work. It seems to me that the fan blowing it out removes the mist and does not let the condensation remain on the surface for a long time after turning the car off. Of course I am speculating on what seems logical based on how my car behaves, and really I don't know too much about cars.

So, for those of you who do know a lot about cars, can you explain how other cars are designed to keep this from happening?

Thank you.

briterco
09-15-13, 11:13 AM
So did the service rep come out and tell you sorry, but we did everything we could but we lost her........

Well...we are still waiting on the final outcome. As far as we know, she's still on life support. Tomorrow will be day 18 in the shop. That plus the first time in makes for a total of 20 days. Ohio's lemon law is a total of 30 days in the shop within a 1 year period qualifies to make a claim. We've not heard anything from the dealership on expected completion. They've lent us a sweet XTS in the meantime. We are just letting the days tick away at this point....

GJB
09-15-13, 02:35 PM
Wow I figured you were back in the ATS and chillin..Keep the meter running and you have options while you enjoy the XTS, what's not to like.

Bryce2.0T
09-16-13, 04:00 PM
Sadly, I'm not shocked to hear this. What are they expecting to do? Re design the entire HVAC system? I doubt it. This, as well as the wide spread of AM/FM complaints are 2 things GM is ignoring and not willing to take action upon. I don't care what type of solution the "high speed fan" could fix before the vehicle is turned off. These are 40k+ luxury sports cars. Sorry but using that as a band-aid just won't cut it for me.

bluecrayon
09-16-13, 11:25 PM
I asked about this several weeks ago as well...I was told "it's normal due to an additive put in the system and will go away eventually". Even though I said I'd wait a few months and address it at my first oil change, I'm not convinced it'll go away. I plan on having it checked out when it's in for an oil change in a couple months.

catmando
09-17-13, 12:49 PM
I have asked people from the Cadillac engineering team and the answer I got is this: they are aware of the problem - it is condensation from the ac evaporator core not draining properly and pooling in the evaporator case. Cadillac is working on the appropriate fix and will issue it to dealers once it is finalized.

GJB
09-17-13, 05:47 PM
I asked about this several weeks ago as well...I was told "it's normal due to an additive put in the system and will go away eventually". Even though I said I'd wait a few months and address it at my first oil change, I'm not convinced it'll go away. I plan on having it checked out when it's in for an oil change in a couple months.

Really??? I would call them on that one, a sealed system that has an additive that smells moldy/musty. That up there with me being told FM HD radio is satellite. catmando got it right.

catmando
09-24-13, 01:14 PM
The latest I have heard from Cadillac engineering is that the suspected cause is the drain hose being inserted too far into the condensate drain pan, not allowing all the condensate to drain. I believe and official bulletin will be released to dealers shortly on how to correct the problem.

AtlantaGuy00
10-22-13, 11:56 PM
Any updates? Mine started doing this too. It's pretty funky for about 10 seconds. I remote start the car just to avoid smelling it. The car is a year old and only has 7000 miles on it. Between the noisy heater, creaky seat, and now the smelly a/c I really regret buying this car. I'm thinking of trading it for something else and taking the hit on depreciation.

off1c3r
10-23-13, 12:43 PM
Anyone with a 2014 (late 2013 build) have this issue or is it limited to the 2013s?

DiabloMike
10-23-13, 12:54 PM
fortunately I can live without AC for a month or so down here in SoFla over the 'winter', but there needs to be a fix, soon :)

tnf
10-29-13, 12:25 PM
My dealership found the problem was the drain tube, fixed it, and sprayed something in to fix the mold. Not sure if was a service update but it progressively got worse.

Cadillac Cust Svc
10-29-13, 01:03 PM
My dealership found the problem was the drain tube, fixed it, and sprayed something in to fix the mold. Not sure if was a service update but it progressively got worse.

Hello tnf,

Thank you for sharing this information. I am glad your dealer found the problem with your vehicle and was able to resolve this concern. If additional questions or concerns arise, please contact us so we can assist.

Sincerely,

Laura M.
Cadillac Customer Care

----------


Any updates? Mine started doing this too. It's pretty funky for about 10 seconds. I remote start the car just to avoid smelling it. The car is a year old and only has 7000 miles on it. Between the noisy heater, creaky seat, and now the smelly a/c I really regret buying this car. I'm thinking of trading it for something else and taking the hit on depreciation.

Hello AtlantaGuy00,

I apologize you are unhappy with your vehicle due to your current situation. I understand your frustration due to your vehicle concerns. Please contact me via private message so we can further discuss this and work towards a resolution.

Sincerely,

Laura M.
Cadillac Customer Care

GJB
10-29-13, 01:09 PM
My dealership found the problem was the drain tube, fixed it, and sprayed something in to fix the mold. Not sure if was a service update but it progressively got worse.

Was you dealer more specific as to what was wrong with the drain tube and how invasive the procedure is?

DiabloMike
10-29-13, 01:13 PM
Anyone with a 2014 (late 2013 build) have this issue or is it limited to the 2013s?I drove a 14 all weekend while the dealer had mine, and I never noticed the smell...it only had 5K miles on it, and may not have developed the issue yet however.

JavaGirl
10-29-13, 01:45 PM
I drove a 14 all weekend while the dealer had mine, and I never noticed the smell...it only had 5K miles on it, and may not have developed the issue yet however.

My 2014 has the stinky AC. It started a day or two after I bought it.

Caddy16
10-29-13, 05:21 PM
I've waited on this moment and finally, I get my new caddy. And it stinks to high heaven. What in the world is going on. I'm too embarrassed to ride anyone. I have sprayed Lysol and bought all kinds of scents and put in there and it still stinks. If they can't fix it, it will have to go. I can't afford it.

off1c3r
10-29-13, 06:08 PM
I drove a 14 all weekend while the dealer had mine, and I never noticed the smell...it only had 5K miles on it, and may not have developed the issue yet however.


My 2014 has the stinky AC. It started a day or two after I bought it.

Thanks. Who knows? Maybe it was fixed at the factory (late 2013 builds) already for all future models. That's good hope for all the current owners. You know how it is. Its extremely fast to fix the issue for future builds, but the real time and investment comes when the bulletin and fix is issued for dealers.

GJB
10-29-13, 06:14 PM
My driveway is on a pretty good incline and when I pull in it drains a fair amount of water so my guess is if it were not for that incline water wood pool in the drip pan and cause the musty smell.

Bryce2.0T
10-30-13, 06:26 PM
Hurry up Cadillac, make a damn TSB lol

louie1487
10-30-13, 09:03 PM
I went to the dealer and they had an update for this issue. The update will allow the blower motor to run after thecar has been turned off to air out the vents to prevent buildup.

ewired
10-30-13, 09:48 PM
I went to the dealer and they had an update for this issue. The update will allow the blower motor to run after thecar has been turned off to air out the vents to prevent buildup.
Has anyone confirmed this. I have had the update for awhile. I have never heard the blower motor keep or come after shutdown.

I usually force the interior recirculation on then use auto after that and adjust temp up/ down to control fan speed.

off1c3r
10-31-13, 07:53 AM
I went to the dealer and they had an update for this issue. The update will allow the blower motor to run after thecar has been turned off to air out the vents to prevent buildup.

That doesn't seem like a fix to me. More like a cover.

Bryce2.0T
11-01-13, 04:37 PM
That doesn't seem like a fix to me. More like a cover.

Nailed it....

GJB
11-01-13, 04:41 PM
Nailed it....

In the IT world we just call it a work around.

redbbq
11-17-13, 02:41 PM
Hey you moldy AC people. Here is a product that may help. It looks like its made in Germany and for professional use specifically to kill stuff that grows on the AC condenser. I don't have any experience with this but thought it may benefit some folks here. Check out the product description and reviews on Amazon. This could be a way to mitigate the problem. Please report back if this works. Good luck.

Einszett Klima Cleaner
"A professional air conditioner cleaner that effectively removes odors caused by mold, fungus, pollen, nicotine and dust. While other products mask odors, Klima-Cleaner uses active foam to directly clean and remove odor causing agents from the evaporator core of the air conditioner system for fresh and clean air that lasts for months. Klima-Cleaner is applied by removing the blower fan and inserting the supplied spray tube through the intake vent which leads directly to the evaporator. For best results, apply every 3-6 months. Klima-Cleaner is water-based and does not contain any harsh chemicals. Recommended for professional application only. On certain vehicle makes, damage may occur if product is not applied properly. If uncertain about application, have a certified mechanic apply product or use einszett 911104 Klima-Cleaner Easy-To-Use (ETU) which doesn't require any disassembly."

http://www.amazon.com/einszett-961105-Klima-Cleaner-Professional/dp/B0002Z2MKO

flycaster
11-18-13, 09:36 AM
I've had the HVAC update, but the blower doesn't run after the car is shut off. Perhaps, one has to ask for this?
Anyway, as I've seen several utube videos (eg, http://www.youtube.com/watch?v=CzYlp9dm7AI) from "professionals" who recommend blowing a Lysol type product into the external cabin air intake ducts, I'm thinking that although this is temporary, it does seem to work. However, before I use Lysol, I'd first like to know if Lysol will do any damage to the parts it comes in contact with? Yeah, I know this is temporary relief, but what the hell, it is an easy enough workaround.

flycaster
11-18-13, 09:09 PM
Making this a separate post. Had to speak to my dealership's GM about an insurance policy problem, and then asked him for the skinny on the stinky AC issue. He said that his dealership had found the fix, and their fix was adopted by Caddy. Although the fix was already mentioned in this thread (catmando, #46), I'd like to re-inforce it: The drain hose is inserted too far into the condensate drain pan, not allowing all the condensate to drain. The dealership will adjust the drain hose to its proper length.

JavaGirl
11-18-13, 09:32 PM
When will this be rolled out into a TSB by GM for all other dealerships?

flycaster
11-18-13, 09:41 PM
I have no idea, but would suggest that you speak to your dealership about this fix. My dealership's GM definitely told me that Caddy was adopting his fix.

glenroebuck
11-19-13, 10:14 AM
Nice I too have the EWWWW what is that smell problem when it first starts up.

General Lee 01
11-27-13, 10:15 PM
Cadillac dealerships all have a repair bulletin for this. Call them and make a service appointment and they will fix it. Had mine done this past summer. Call them and they know exactly what to do to fix it. There is no mystery to solve here.

GJB
11-28-13, 10:09 AM
Cadillac dealerships all have a repair bulletin for this. Call them and make a service appointment and they will fix it. Had mine done this past summer. Call them and they know exactly what to do to fix it. There is no mystery to solve here.

I've checked the TSBs and the only one that addresses this issues has them use the spray that kills the mold/smell. Do you know the TSB #?

flycaster
11-28-13, 11:41 AM
I've checked the TSBs and the only one that addresses this issues has them use the spray that kills the mold/smell. Do you know the TSB #?

Yeah, spraying is a quick, but a very temporary and potentially harmful fix for the smell issue. I say harmful because the spraying most likely doesn't get everything (probably unless you spray weekly, a definite PITA) and eventually there will be a build up of bacteria and mold that can reach unhealthy levels. I say if you have the smell, don't wait, have faith in the tranny/exhaust fix...if you trust your dealership to do the job right.

General Lee 01
12-01-13, 11:36 AM
I've checked the TSBs and the only one that addresses this issues has them use the spray that kills the mold/smell. Do you know the TSB #?

Bulletin# 99-01-39-004D. Paperwork states "a/c drain misalignment, pulled carpet back, check the drain as per bulletin, realign drain as per bulletin, for this complaint deodorize the hvac box with part# 12377952 as per bulletin# 99-01-39-004D."

I think the hose gets fixed and then they spray to kill what has already grown in there.

cadilover96
12-22-13, 10:21 AM
I just bought my ATS in September and I noticed a moldy smell this week. Way to soon to have issues such as this.

catmando
03-17-14, 02:12 PM
I believe PIC5730 is the repair bulletin that addresses the drain hose. There is also a change to the logic to allow the blower to run to dry out the drain pan after the car stops. It will come on about ten minutes after the car is turned off and run for five minutes or so. These two fixes should take care of the problem in most cases. To fix the drain hose properly, the culprit should be replaced with part number 2312009, not just rearrange the original hose.

nyinstaller
03-17-14, 03:29 PM
I have went to the dealership and have had the drain FIX or no so much fix.

more than 2 months since all that was done and still have the mold smell on start up.

DiabloMike
03-17-14, 08:51 PM
I have went to the dealership and have had the drain FIX or no so much fix.

more than 2 months since all that was done and still have the mold smell on start up.really?
That sucks. Glad I didn't get it done.

Johan said his dads is still doing it too....summer is coming fast, we need non stinky A/C!

Cadillac Cust Svc
03-18-14, 10:27 AM
I have went to the dealership and have had the drain FIX or no so much fix.

more than 2 months since all that was done and still have the mold smell on start up.

Hi nyinstaller,

I am sorry to hear that the fix did not correct the mold smell in your car. If you would like, I can look into the issue and contact the dealership on your behalf regarding a follow-up visit. If you can send me a PM with your VIN and contact information I can open a case for you. Hope to hear from you soon.

Austin J.
Cadillac Customer Care

nyinstaller
03-19-14, 11:56 AM
Hi nyinstaller, I am sorry to hear that the fix did not correct the mold smell in your car. If you would like, I can look into the issue and contact the dealership on your behalf regarding a follow-up visit. If you can send me a PM with your VIN and contact information I can open a case for you. Hope to hear from you soon. Austin J. Cadillac Customer Care

Sent

rolyzglobe
03-24-14, 11:30 AM
I am having the same exact issue. I have had my car for about 4 months and noticed the issue began about a month ago. When I first start the car, a vinegar like smell comes out of the A/C. I have to run the A/C for about 20 seconds for the smell to leave. The smell got so bad that I made a appointment at the dealer to have it fixed.

I have also recently been suffering from dizzyness and it also began around the same time the issue started. I hope it is not related to any mold problems. Either way, I will also be checking with my doctor.

I will let you know what my dealer tells me.

DEVGRU
04-22-14, 03:27 PM
Ladies and gentlemen, I have found the ultimate fix to our smelly AC problem.

First, if you are somewhat mechanically inclined this is doable. Please note that I have taken my ATS to the dealer twice. Once for the AC fan update, once for the spray on the evaporator. (Either didn't fix the issue)

You will need a floor jack and or ramps to elevate your car. Also, go to your local Subaru dealership and ask for the evaporator foam and vent cleaner Part # SOA868V9315 $19.44 after tax here in Texas.
I used ramps to make life a little easier. Pull your car up on to the ramps or use the floor jack to elevate your car. REMEMBER TO SET THE PARKING BRAKE OR USE JACK STANDS FOR MORE SUPPORT.
Crawl underneath the driver side towards the transmission. Look around for a bit. You will see a large panel that is carpeted and a thin piece of aluminum underneath.
Remove the carpeted panel, I think there was close to 10 nuts and or bolts to remove.
Also, remove the thin piece of aluminum to expose the color of your car. My car is silver so I could see the silver paint they used to paint the undercarriage of the car.

The piece of aluminum will be a pain to get off be patient and wiggle it out of there. I just used tin snips and cut it out of the way.
After you have everything off you will see a cable on the drivers side of the transmission. That is the gear shift cable to put your car in drive or neutral etc.
Look between the cable and the body of the car mind you the ac drain tube is a ways up there. HORRIBLE DESIGN BY THE WAY FOR CADILLAC.
Use a flashlight to look up about a foot above the base of the transmission. TRUST ME IT IS THERE.
After locating the drain tube take a 12" 5/8's drive extension and tape the supplied tube that came with the cleaner purchased at Subaru. I used black electrical tape.
Place the wedge type nozzle into the end of your drain tube. Press the button on the aerosol can until about a quarter of the can has sprayed into the system.

Hold the wedge type nozzle in there for about 20 seconds so so none of the foam comes out.
After about twenty seconds or so remove the wedge type nozzle from your ac drain tube. WATCH OUT BECAUSE THAT FOAM COMES OUT IN A HURRY.
Start your car with ac fan on low. Turn the ac on so the system starts to sweat and removes most of the foam.
Careful not to have the ac fan on high as it will blow the foam out of the vents.
Repeat the process until all of the foam is gone from the can. I think I did it about four or five times just so I didn't fill the evaporator box too full of foam.
After using the entire can of foam and most of the foam has been removed from the system from condensation by the ac evaporator continue to let the ac run continuously changing the modes feet, face, defrost, feet-face.

After letting the car run for awhile (20 Minutes) all of the foam should be removed.
Next you want to pop the hood.
Place ac on recirculate in the highest fan speed.
Go to the passenger side of the car look at the base of the windshield and you will see a black plastic grate.
Spray the entire contents of the small aerosol can that came with the foam from the Subaru dealership.

Let the ac run on recirculate for about 20 more minutes. If you can stand the smell change the different modes once again to kill any remaining bacteria in the entire system ( feet, face, defrost, feet-face).
After you have completed both of those steps it is totally up to you to place the thin aluminum back under the car along with the carpeted panel.
I left mine off because it hinders the ac to drain the water properly thus creating a drain issue in return creating mold.
If you choose to re-install the panels I can't guarantee the smell will go away.
Either way let the car run for about 30 minutes or more to continue to run fresh water through the evaporator box.





All of this is information is based on my experience and end user should use caution. My ability to perform such tasks might be a little better than yours, but I think it is pretty straight forward.
If I wouldn't have been so pissed off yesterday while doing this I would have provided pictures. It's a shame I spent $44,000 on a car that the dealer can't fix properly.
This solution to the smelly ac problem is a guaranteed fix if you follow my simple steps. Also sorry I used a lot of sentences and it doesn't look fancy with italics and maybe a few spelling errors but you get the point as I am in a hurry.


Thanks,

DEVGRU

Erich_33406
04-22-14, 05:46 PM
Hi Guys and Gals. I've just dropped in on this thread as to let you know that FORD is also having the Very same issue with some of their car models.
I just traded my new 2013 Ford Red Fusion for the 2014 Red ATS.
I belong to Ford Fusion Forum where they are discussing the Very same problem with NO Fix from FORD Corp. so far. But there is Hope, as a Canadian Owner is taking them to task through their Canadian Lemon Law which is different than ours. They had a Third party Investigator look at the problem and contact Ford Corp. with his findings, which he has found a Defective part in the AC system.
Right now currently it's being researched by Ford Corp.'s team to see how best and cheaply to fix it. So far they won't even acknowledge there is a Problem. In about a month from now it will become Public Knowledge for all to see according to the Canadian Poster. It's a waiting game.

Erich_33406
04-24-14, 11:42 AM
We have this same problem. The cadillac dealer set the fan to turn on after the car is off and sprayed something in the system. It was fine for a couple weeks but has returned. We like the car, but this is unacceptable. And it does go away after startup, but we shouldn't have to deal with this on a new $40k+ car. My wife recently made another appointment to get this looked at but judging from this thread I see others have the same problem.


Not only do Other GM cars have this problem, Ford also has this same problem. So something in common with all Cars and even different Manufactures.

Here is a Quote from the Ford Thread.


Mattken Moore Posted 22 March 2014 - 03:47 PM

Well I have the report and the inspector found a defect in a part and workmanship of said part that he believes causes the smell and mold growth to happen and pass into the HVAC system in the vehicle and has stated what needs to be fixed and how. And wait for it Ford engineers are currently working on a repair!!!! .Unknown to when tho but thanks to the people that contributed. So all in all I was able to get Fords attention to this matter and hopefully this will be able to be resolved for everyone else in the future. Also the case will be coming available to public through the Canadian CAMVAP organization when the case is closed in 90days time.

Maxplot
04-24-14, 04:13 PM
Yep. Every car I have ever owned, I used to turn off the A/C about 2 blocks from the house so condensation would not collect. Now with my ATS, I just leave it on Auto all the time and I don't really think it is so bad on startup. I would not call it moldy. Like fresh cut grass after a spring rain. ;)

DEVGRU
04-24-14, 10:24 PM
Just an update to my last post about the AC fix that I recently performed on my 2013 ATS.


I haven't had any problems with the smell I previously had. It smells like a new car every time I start my car. I have noticed a big puddle of condensation under my car now that I have removed the materials covering the drip tube, so that is a great sign.

Also, if you are waiting for Cadillac to come up with a fix good luck. Sometimes you have to take matters into your own hands and come up with your own solution to the problem.


Thanks,
DEVGRU

Erich_33406
04-28-14, 03:39 PM
Just an update to my last post about the AC fix that I recently performed on my 2013 ATS.


I haven't had any problems with the smell I previously had. It smells like a new car every time I start my car. I have noticed a big puddle of condensation under my car now that I have removed the materials covering the drip tube, so that is a great sign.

Also, if you are waiting for Cadillac to come up with a fix good luck. Sometimes you have to take matters into your own hands and come up with your own solution to the problem.


Thanks,
DEVGRU

Very True

Maxplot
04-28-14, 09:29 PM
If you don't like the smell of your A/C when you first turn it on, hit the windshield washer a couple times. Not only will it clean the windshield, you will get the sweet smell of washer fluid coming through the vents.

drlib14
04-29-14, 04:53 PM
Well let me join the long list, here in Hot Sunny FL I always have the AC on and I have the order also at start up

So should I go back to the dealer or just live with it
been in for the brakes 3 times
Bluetooth 3 times

nyinstaller
05-09-14, 08:54 AM
sometimes I think I get a wiff of the smell but not really sure, was/ is it better after the second attempt? OH yes. but I too notice not much condensation under the car so I think the removal of the shield may be a good deal as it will remove a restriction that is obviously present.

as far as the foam that's a bit risky as if you clog the hole your screwed. but that doesn't mean the fix isn't something worth trying.

ATSAZ
05-10-14, 02:37 PM
I can attest to GM having this problem across many platforms... I've had the moldy smell in Buick's, Chevy's, GMC's, and now this 13 ATS.. Won't go into any rant about why they haven't successfully addressed this "common" issue... Disappointing? Absolutely. Frustrating? Absolutely. Weird how my girl's Infinity and MINI don't have moldy smells... So we know you can have an A/C system that doesn't smell...

Maxplot
05-10-14, 07:24 PM
I can attest to GM having this problem across many platforms... I've had the moldy smell in Buick's, Chevy's, GMC's, and now this 13 ATS.. Won't go into any rant about why they haven't successfully addressed this "common" issue... Disappointing? Absolutely. Frustrating? Absolutely. Weird how my girl's Infinity and MINI don't have moldy smells... So we know you can have an A/C system that doesn't smell...

My previous 3 cars were Infiniti's and all three had this smell. My solution was to turn the A/C off about 2 blocks from home so that the condensation would not continue to develop after I shut the car off. All cars I have ever owned have this problem. I actually think my ATS is the best of the bunch because I don't turn the A/C off at all and the smell is not as bad as my previous Infiniti's.

muskyfins
05-12-14, 10:58 AM
Ladies and gentlemen, I have found the ultimate fix to our smelly AC problem.

First, if you are somewhat mechanically inclined this is doable. Please note that I have taken my ATS to the dealer twice. Once for the AC fan update, once for the spray on the evaporator. (Either didn't fix the issue)

You will need a floor jack and or ramps to elevate your car. Also, go to your local Subaru dealership and ask for the evaporator foam and vent cleaner Part # SOA868V9315 $19.44 after tax here in Texas.
I used ramps to make life a little easier. Pull your car up on to the ramps or use the floor jack to elevate your car. REMEMBER TO SET THE PARKING BRAKE OR USE JACK STANDS FOR MORE SUPPORT.
Crawl underneath the driver side towards the transmission. Look around for a bit. You will see a large panel that is carpeted and a thin piece of aluminum underneath.
Remove the carpeted panel, I think there was close to 10 nuts and or bolts to remove.
Also, remove the thin piece of aluminum to expose the color of your car. My car is silver so I could see the silver paint they used to paint the undercarriage of the car.

The piece of aluminum will be a pain to get off be patient and wiggle it out of there. I just used tin snips and cut it out of the way.
After you have everything off you will see a cable on the drivers side of the transmission. That is the gear shift cable to put your car in drive or neutral etc.
Look between the cable and the body of the car mind you the ac drain tube is a ways up there. HORRIBLE DESIGN BY THE WAY FOR CADILLAC.
Use a flashlight to look up about a foot above the base of the transmission. TRUST ME IT IS THERE.
After locating the drain tube take a 12" 5/8's drive extension and tape the supplied tube that came with the cleaner purchased at Subaru. I used black electrical tape.
Place the wedge type nozzle into the end of your drain tube. Press the button on the aerosol can until about a quarter of the can has sprayed into the system.

Hold the wedge type nozzle in there for about 20 seconds so so none of the foam comes out.
After about twenty seconds or so remove the wedge type nozzle from your ac drain tube. WATCH OUT BECAUSE THAT FOAM COMES OUT IN A HURRY.
Start your car with ac fan on low. Turn the ac on so the system starts to sweat and removes most of the foam.
Careful not to have the ac fan on high as it will blow the foam out of the vents.
Repeat the process until all of the foam is gone from the can. I think I did it about four or five times just so I didn't fill the evaporator box too full of foam.
After using the entire can of foam and most of the foam has been removed from the system from condensation by the ac evaporator continue to let the ac run continuously changing the modes feet, face, defrost, feet-face.

After letting the car run for awhile (20 Minutes) all of the foam should be removed.
Next you want to pop the hood.
Place ac on recirculate in the highest fan speed.
Go to the passenger side of the car look at the base of the windshield and you will see a black plastic grate.
Spray the entire contents of the small aerosol can that came with the foam from the Subaru dealership.

Let the ac run on recirculate for about 20 more minutes. If you can stand the smell change the different modes once again to kill any remaining bacteria in the entire system ( feet, face, defrost, feet-face).
After you have completed both of those steps it is totally up to you to place the thin aluminum back under the car along with the carpeted panel.
I left mine off because it hinders the ac to drain the water properly thus creating a drain issue in return creating mold.
If you choose to re-install the panels I can't guarantee the smell will go away.
Either way let the car run for about 30 minutes or more to continue to run fresh water through the evaporator box.





All of this is information is based on my experience and end user should use caution. My ability to perform such tasks might be a little better than yours, but I think it is pretty straight forward.
If I wouldn't have been so pissed off yesterday while doing this I would have provided pictures. It's a shame I spent $44,000 on a car that the dealer can't fix properly.
This solution to the smelly ac problem is a guaranteed fix if you follow my simple steps. Also sorry I used a lot of sentences and it doesn't look fancy with italics and maybe a few spelling errors but you get the point as I am in a hurry.


Thanks,

DEVGRU

Does anybody know this procedure for the 2nd Gen SRX? The odor in mine is so obnoxious, I'm thinking of trading it in.

flycaster
05-12-14, 11:53 AM
I'm really not sure why folks are still having problems with the A/C smell as there is a known Cadillac fix. The drain pipe has to be lowered a bit, and they will set the blower to come on automatically (to discharge any moisture from the vents and vent tubing) for a minute or so after the car has been parked. It is my understanding that the folks at Ed Morse Caddy, Delray, FL, came up with the fix an Caddy has adopted it...Ed Morse did it for me over 6 months ago and no more smell.

muskyfins
05-13-14, 04:16 PM
@flycaster. Believe me, I'm still having problems. I am willing to just do it my self like DEVGRU did because the dealer wants to replace my heater core at the tune of $1600 on a 3 year old car! (Which I don't think will solve the problem.) My question is how much different the procedure would be for an SRX versus the ATS? I'm more than a little technical so as soon as i get a chance, I'll crawl under there and take a look I suppose.

DiabloMike
05-13-14, 05:46 PM
I'm really not sure why folks are still having problems with the A/C smell as there is a known Cadillac fix. The drain pipe has to be lowered a bit, and they will set the blower to come on automatically (to discharge any moisture from the vents and vent tubing) for a minute or so after the car has been parked. It is my understanding that the folks at Ed Morse Caddy, Delray, FL, came up with the fix an Caddy has adopted it...Ed Morse did it for me over 6 months ago and no more smell.I know of 2 local cars that have had this 'fix' performed, one at Ed Morse, and both still have the issue.

flycaster
05-15-14, 07:47 AM
I know of 2 local cars that have had this 'fix' performed, one at Ed Morse, and both still have the issue.

Well, I guess I'm one of the lucky few who have successfully had the A/C smell issue solved. With a hot, humid, summer coming upon us here in SoFL, I hope I didn't just jinx myself.

GJB
06-10-14, 07:26 PM
Just picked up my car and service ticket states "Turn on after blow feature to dry evaporator core". Asked the SA to explain he went and asked the shop Forman who said its programing they do and it has the fan blow for 40 min after the car is shut off. I asked about battery drain and was told fan draws very little so no worries. Came home shut the car off but heard no fan so its Elmer Fud "vewwy vewwy quite" or not running.

Do any of you buy this answer because I'm skeptical to say the least.

ikireland
06-11-14, 07:28 AM
Just picked up my car and service ticket states "Turn on after blow feature to dry evaporator core". Asked the SA to explain he went and asked the shop Forman who said its programing they do and it has the fan blow for 40 min after the car is shut off. I asked about battery drain and was told fan draws very little so no worries. Came home shut the car off but heard no fan so its Elmer Fud "vewwy vewwy quite" or not running. Do any of you buy this answer because I'm skeptical to say the least.

After blow is a real thing. Their description isn't exactly correct. Once the car is shut and meets certain conditions (ambient temp and what not) it will blow the blower for a short amount of time to clear any crap out of the system. It does not blow for 40 min after shutting the car off.

----------

Heres info from GM on the after blow feature:

"2014 Cadillac ATS | ATS VIN A Service Manual 5576614 | HVAC | Heating, Ventilation, and Air Conditioning | Diagnostic Information and Procedures | Document ID: 2382151

Afterblow Enabling
The afterblow mode can be enabled using the scan tool. The afterblow mode allows the blower motor to operate after the engine has been turned off. This operation of the blower motor dries the evaporator core, which reduces the amount of microbial growth which can create undesirable odors.

Use the following procedure in order to enable the afterblow mode:

Connect the Scan Tool.
Turn ON the ignition, with the engine OFF.
Build the vehicle with the scan tool.
Select Module Diagnosis.
Select Remote Heater and Air Conditioning Control Module.
Select Configuration/Reset Functions.
Select HVAC Afterblow Configuration.
When afterblow has been enabled by the scan tool the blower motor will operate at 68% blower speed, following the sequence below up to 5 times. This could last up to an hour:

The blower motor will be OFF for 7–11 minutes.
The blower motor will RUN for 25–30 seconds.
The following conditions must be met for the HVAC module to operate the afterblow:

The engine must be turned off for at least 30 min.
The outside air temperature must be at least 21ーC (70ーF).
The A/C compressor must have operated for more than 2 minutes before shut down during the latest key cycle.
The system voltage must be at least 12 V."

nyinstaller
06-11-14, 11:41 PM
Afterblow is a joke. Waste of time

GJB
06-12-14, 06:51 AM
Afterblow is a joke. Waste of time

I have not noticed an improvement but its only been a day, I don't think the issue is water remaining on the core but in the drip pan. My other cars leave a puddle of water under the car in the garage after I park. The ATS does not but when I back out my driveway which is pretty steep I can see a long trail of water draining and this is right after the car is started.

GJB
06-12-14, 08:24 PM
I know of 2 local cars that have had this 'fix' performed, one at Ed Morse, and both still have the issue.

Mike, Did they do the afterblow and the drain or just the afterblow. On my car they just did the afterblow and I still have it.

----------


After blow is a real thing. Their description isn't exactly correct. Once the car is shut and meets certain conditions (ambient temp and what not) it will blow the blower for a short amount of time to clear any crap out of the system. It does not blow for 40 min after shutting the car off.

----------

Heres info from GM on the after blow feature:

"2014 Cadillac ATS | ATS VIN A Service Manual 5576614 | HVAC | Heating, Ventilation, and Air Conditioning | Diagnostic Information and Procedures | Document ID: 2382151

Afterblow Enabling
The afterblow mode can be enabled using the scan tool. The afterblow mode allows the blower motor to operate after the engine has been turned off. This operation of the blower motor dries the evaporator core, which reduces the amount of microbial growth which can create undesirable odors.

Use the following procedure in order to enable the afterblow mode:

Connect the Scan Tool.
Turn ON the ignition, with the engine OFF.
Build the vehicle with the scan tool.
Select Module Diagnosis.
Select Remote Heater and Air Conditioning Control Module.
Select Configuration/Reset Functions.
Select HVAC Afterblow Configuration.
When afterblow has been enabled by the scan tool the blower motor will operate at 68% blower speed, following the sequence below up to 5 times. This could last up to an hour:

The blower motor will be OFF for 7–11 minutes.
The blower motor will RUN for 25–30 seconds.
The following conditions must be met for the HVAC module to operate the afterblow:

The engine must be turned off for at least 30 min.
The outside air temperature must be at least 21ーC (70ーF).
The A/C compressor must have operated for more than 2 minutes before shut down during the latest key cycle.
The system voltage must be at least 12 V."


ikireland, It works as described, About 30 Min after I got home I was in the garage and heard it come on for about 30 seconds. Unfortunately I noticed no improvement from before I took it in :(

Erich_33406
06-12-14, 08:38 PM
It's MY OPINION, This seems to be a Universal Problem. Over at Ford they have started a Air Condition Mold smell Fix on their cars by doing the following on FORDS Only.
Again this is for FORD's Problem.

FORD SERVICE PROCEDURE
1. Replace the Climate Control Housing. Refer to Workshop Manual (WSM), Section 412-00.
a. Transfer the components from the old housing to the new housing as needed.
PART NUMBER
PART NAME
EG9Z-19B555-C
Climate Control Housing - Manual Air Conditioning
EG9Z-19B555-D
Climate Control Housing - Dual Zone Auto Temp Control
W714878-S439
Steering Column Shaft-To-Steering Column Pinch Bolt
OPERATION
DESCRIPTION
TIME
140099A
2013-2014 Fusion: Replace The Climate Control Housing (Do Not Use With Any Other Labor Operations)
6.0 Hrs.
140099A
2013-2014 Fusion Hybrid: Replace The Climate Control Housing (Do Not Use With Any Other Labor Operations)
6.6 Hrs.
140099A
2013-2014 Fusion Hybrid Plug In: Replace The Climate Control Housing (Do Not Use With Any Other Labor Operations)
6.8 Hrs.
140099A
2013-2014 MKZ: Replace The Climate Control Housing (Do Not Use With Any Other Labor Operations)
7.4 Hrs.
140099A
2013-2014 MKZ Hybrid: Replace The Climate Control Housing (Do Not Use With Any Other Labor Operations)
7.7 Hrs.

GJB
06-12-14, 09:41 PM
So what has changed AC in cars have been around for 5O years. This is the first car out of 15 thathas had this issue?

Bertha D Blues
06-13-14, 08:17 AM
GJB, it may take a while for the mold spores and bacteria to die with just the afterblow. I had the moldy smell last year but haven’t noticed it yet this season.

About 12-14 years ago I had the same problem with my F150. I used a product called Frigi-Clean, which is an aerosol that must be sprayed into the evaporator case to coat the whole coil. It kills bacteria, mold, etc. In my truck, I had easy access through the motor resistor opening. I haven’t looked for access in the ATS yet. The bottom line is that I still have that truck and the smell never returned. That’s with summer humidity levels here in corn country matching those in southern Florida.

One more thing, Packard was first to offer AC in their cars 74 years ago. Bert

flycaster
06-13-14, 08:41 AM
Must say I had the A/C smell issue, but after it was fixed (my dealer-Ed Morse, apparently came up with GM's now accepted solution-lower the drain to be level with the pan's bottom without taking the dash apart...I think the after-blow comes from GM), the smell is gone here in SoFL. Lucky me!

Hoosier Daddy
06-13-14, 10:16 AM
So what has changed AC in cars have benn around for 5O years. This is the first car out of 15 thathas had this issue?
But the execution (actual part design) is going to be different between cars. I thought at least some of these problems are due to a drain hose being installed wrong causing water to stand instead of drain. I wouldn't be surprised if all of this was caused by that. The fact is manufacturers are perfectly happy to use a mask-the-problem fix if its cheaper than the proper fix. I'm not saying its the case, but if its dirt cheap to reprogram some after-blow than replace or move a hose that's buried and if that gets rid of x% of the complaints, they would do that.

probee773
06-16-14, 08:41 AM
So, my dealer says that they cannot turn on afterblow in my car because my car doesn't have this option (base 2.0T, auto + CUE). Isn't this just a software update? Do I need to find another dealer?

GJB
06-16-14, 08:54 AM
Look at poat#98 and ask your dealer about the Scan tool and bring that info with you.

DEVGRU
06-16-14, 11:55 PM
Just another update: It has been some time since I did the repair I posted. I still have fresh air in my car and the car is still draining condensation from the bottom of the car like it should. If anyone else has done the ac repair following the steps I provided, please feel free to post it. I'd like to know if you had success like I did. Thanks!

DEVGRU

GTO to ATS
06-17-14, 11:10 PM
Did anyone take theirs in to the dealer and after they deorderize it have the car faintly smells like the musty smell at all times, not just the first 10 seconds the AC is on? Its no where near as strong as what it smelt like in those first 10 seconds (it doesnt get worse upon first turning on the AC) but its still noticeable...even when the car is off.

probee773
06-20-14, 05:25 PM
So, my dealer says that they cannot turn on afterblow in my car because my car doesn't have this option (base 2.0T, auto + CUE). Isn't this just a software update? Do I need to find another dealer?

Ok, so my ATS falls in this weird gap where the after-blow feature wasn't installed from the factory. See the article on the bottom left of page 6 of this link: http://sandyblogs.com/techlink/wp-content/uploads/2013/01/January-Techlink-2013-F.pdf. My dealer followed these instructions, and now, I have after-blow! Let's hope this helps the issue (even a little) especially since I live in Florida, and it's starting to get hot and humid down here. ;-)

GJB
06-24-14, 08:57 PM
Took my ATS back to dealer for the musty odor because after blow did not correct the problem. Ticket states they repositioned drain tube and coated evaperator coil with cooling coil coating per PI1160A. Sure hope this fixes it.

Does anyone know what cooling coil coating is?

CTSCHICK
06-24-14, 09:17 PM
Does anyone know what cooling coil coating is?

It is an acrylic based coating that is supposed to prevent airborne and moisture based bacteria, mold & mildew from building up on or sticking to the cooling coil preventing odor.

GJB
06-25-14, 07:32 AM
It is an acrylic based coating that is supposed to prevent airborne and moisture based bacteria, mold & mildew from building up on or sticking to the cooling coil preventing odor. Which makes a lot of sense. I wonder why its not applied prior or during the build.

rsingl
06-25-14, 09:52 AM
I wonder how much the coating interferes with heat transfer to the coil? Maybe the effect is offset by reduced debris buildup on the coil/fins.

GJB
06-25-14, 12:23 PM
According to a manufacturer no interference. Check out this link very informative and It looks like they may make the AC DELCO version of this. http://www.airsept.com/index.php?loadmod=cccfaq

Bertha D Blues
06-25-14, 01:08 PM
Ticket states they repositioned drain tube and coated evaperator coil with cooling coil coating per PI1160A.

Does the service receipt note how long the repair took? I’m curious whether they removed your dash or dropped the trans or some other invasive tactic. Mine is going in soon for a recall and this is on my list. Bert

GJB
06-25-14, 01:23 PM
I'll look and let you know. I doubt they removed the dash it was only there 1.5 days and I had an alignment and recall inspection during the visit. I believe they went through the glove compartment to spray the coating (glove box and passenger seat had some minor grease/dirt marks from the tech). And in this post someone did the cleaning/coating themselves and they said you could at least see the drain from where that shifter cable runs so maybe they could reach it? Fly states they dropped the trans on his. Car was taken for a 10 Mile test drive after so they very well may have.


Update: Asked SA and she said "He had to go under the dash and pull the side panel off to gain access to the evaporator"

This seems to apply to adding the coating but doess not jive with anything else I've read on the drain tupe issue, so not too confident

Update day 2 and still OK!

CTSCHICK
06-26-14, 04:42 AM
According to a manufacturer no interference. Check out this link very informative and It looks like they may make the AC DELCO version of this. http://www.airsept.com/index.php?loadmod=cccfaq

That is the OEM, GM relabels and use's quite a few of their products.

GJB
06-27-14, 07:02 AM
Ticket states they repositioned drain tube and coated evaperator coil with cooling coil coating per PI1160A.

Does the service receipt note how long the repair took? I’m curious whether they removed your dash or dropped the trans or some other invasive tactic. Mine is going in soon for a recall and this is on my list. Bert

Bert From my ticket it looks like time is listed as units and 1.10 was next to the AC fix and .90 for the recall work.

flycaster
06-27-14, 07:37 AM
Ticket states they repositioned drain tube and coated evaperator coil with cooling coil coating per PI1160A.

Does the service receipt note how long the repair took? I’m curious whether they removed your dash or dropped the trans or some other invasive tactic. Mine is going in soon for a recall and this is on my list. Bert

Mine was fixed by Ed Morse in Delray, FL. As far as I know this was the dealership that came up with a fix that GM adopted. The fix did not entail removing the dash. They had to lower the tranny and exhaust. Since the fix, about many months ago, no problems with smell even though here in SoFL the A/C is used all the time.

JSATS
07-07-14, 07:50 AM
I'm having the same problem with my 14 ATS. The smell is disgusting and it's embarrassing to have anybody ride in our car. My wife has had a cough for about a Month now and she feels like she has a chest cold. We are now thinking she is suffering from some kind of mold in her lungs. We brought it to our dealer last week and they said there was mold in the system so they deodorized it and sprayed some stuff. We drove the car the next day and it still was disgusting. We have been driving with the windows open hoping the smell will go away. We are bringing the car back this morning hoping they will clean it out better. Maybe it will take some time for the system to clear out and the smell to go away? Either way I'm not going to use air freshener or anything else to mask the smell, I want the mold gone!

flycaster
07-07-14, 09:17 AM
I'm having the same problem with my 14 ATS. The smell is disgusting and it's embarrassing to have anybody ride in our car. My wife has had a cough for about a Month now and she feels like she has a chest cold. We are now thinking she is suffering from some kind of mold in her lungs. We brought it to our dealer last week and they said there was mold in the system so they deodorized it and sprayed some stuff. We drove the car the next day and it still was disgusting. We have been driving with the windows open hoping the smell will go away. We are bringing the car back this morning hoping they will clean it out better. Maybe it will take some time for the system to clear out and the smell to go away? Either way I'm not going to use air freshener or anything else to mask the smell, I want the mold gone!

As you can see from previous posts (search the forum), this was/is a problem with the 2013 ATSs. However, you will also see that there is a fix (reposition the drain tube) that GM has adopted. Don't know if this applies to the 2014s, but you should let your dealership know about it and see what they say.

nyinstaller
07-07-14, 09:56 AM
my car has been into the dealer for every (FIX) Or not so fixed attempts. My car still stinks and not only that the adapted After blower feature is annoying. when I turn my ac off I shouldn't still feel a blower on my face as well as when the ac is off and the after blower is on that's when it smells the worst. Or shall I say if there is mold That's when It is blowing directly into the cabin air.

AS someone just posted I too have a lingering cough that doesn't seem to want to go away, can it be coincidental I drive the car everyday? that's not a question just putting it out there. Maybe if enough people are experiencing the same it holds truth. I know there is mold in my system, I smell it. does anyone know take home method of testing? as its apparent GM is not going to fix the issue. and the supposed fixes may work for others but not for me. My dealership (Robin H @coral Cadillac in pompano beach) has been great but if you are working with crap no matter what the outcome is going to be crap. Think about it. its a defective design on someones part and the Whole after blower to dry the coils isn't cutting it.

I too notice the evaporator Drain doesn't seem to drain that much. I am in south florida its 90 degrees there is no reason a puddle shouldn't form under my car. and as much as the AC can Freeze your fingers in this car Its amazing how it doesn't evaporate more.

time to buy a test kit lets see if this works

http://www.homedepot.com/p/Mold-Armor-Mold-Test-Kit-FG500/100628956#specifications

SOMETHING IS BLOCKING IT. time to put it on my lift and see what I see.

GM CUSTOMER CARE monitoring this thread. IS there any way to remove the after blower nonsense now that it has been activated? IT DOES NOT WORK AND IS Annoying. Can the addition be reversed If you can get me a BCM update TIS code I can do it my self. I want that feature removed. Yes I have tis access and a MDI.

GJB
07-07-14, 04:28 PM
nyinstaller, The after blow feature they activated turns the blow motor on about 30 min after you shut the car off under specific conditions and runs for 30 SEC at about 70% speed than it repeats it a couple of times over the next hour.

nyinstaller
07-07-14, 05:17 PM
That is not the only times it comes on. I have opened my door and sat in it without starting the car and after it sat all night and all of a sudden the blower will come on. So I think the programing is Not quite what it seems. either way it doesn't work as the mold smell is still apparent. and id like the bcm code to set it back. as well as I have one of those Air fresheners with the little fan on it. and you can watch this thing steadily move minutes after the ac has been turned off while I continue to drive with the windows up. so something is pushing air through it to make it move and Im not blowing on it. If I remove from the vent it stops moving almost instantly there for the blower is still active. at a low speed but active.

GJB
07-07-14, 05:59 PM
Sounds like something is not working correctly, It did not fix the brief musty odor on my car either. They supposedly repositioned my drain tube and put a coating on the coil. It's better now although not great. Sometimes I get the moldy odor and sometimes I don't?

Cadillac Cust Svc
07-08-14, 11:47 AM
my car has been into the dealer for every (FIX) Or not so fixed attempts. My car still stinks and not only that the adapted After blower feature is annoying. when I turn my ac off I shouldn't still feel a blower on my face as well as when the ac is off and the after blower is on that's when it smells the worst. Or shall I say if there is mold That's when It is blowing directly into the cabin air.

AS someone just posted I too have a lingering cough that doesn't seem to want to go away, can it be coincidental I drive the car everyday? that's not a question just putting it out there. Maybe if enough people are experiencing the same it holds truth. I know there is mold in my system, I smell it. does anyone know take home method of testing? as its apparent GM is not going to fix the issue. and the supposed fixes may work for others but not for me. My dealership (Robin H @coral Cadillac in pompano beach) has been great but if you are working with crap no matter what the outcome is going to be crap. Think about it. its a defective design on someones part and the Whole after blower to dry the coils isn't cutting it.

I too notice the evaporator Drain doesn't seem to drain that much. I am in south florida its 90 degrees there is no reason a puddle shouldn't form under my car. and as much as the AC can Freeze your fingers in this car Its amazing how it doesn't evaporate more.

time to buy a test kit lets see if this works

http://www.homedepot.com/p/Mold-Armor-Mold-Test-Kit-FG500/100628956#specifications

SOMETHING IS BLOCKING IT. time to put it on my lift and see what I see.

GM CUSTOMER CARE monitoring this thread. IS there any way to remove the after blower nonsense now that it has been activated? IT DOES NOT WORK AND IS Annoying. Can the addition be reversed If you can get me a BCM update TIS code I can do it my self. I want that feature removed. Yes I have tis access and a MDI.

Hello nyinstaller,

I understand the concerns you have related to your health. Your safety is our first priority and I apologize you are experiencing this. As I am not a technician, I am unable to provide technical advice but I would be happy to contact your dealership on your behalf. Please private message me with more information regarding this concern. Please include your contact information, VIN, mileage and preferred dealership. I look forward to hearing from you soon.

Katie O.
Cadillac Customer Care

Bertha D Blues
07-08-14, 01:41 PM
nyinstaller, If you go the test-kit route you should get 2 kits. Mold is everywhere, inside and out but it’s the concentration of mold spores that can affect you. Use one kit to sample the air in your car. Use the second kit to sample the ambient air near where you park for long periods. You should compare the results between the two samples to see if there is a higher in-car concentration. My car is in the shop now to, hopefully, fix my problem. Bert

nyinstaller
07-09-14, 02:43 PM
I don't really think there is a link. Could there be sure I'm in the car enough I was just posting because it was coincidental someone else said the samething.

If it gets worse ill be going to dealer again and this time they will have to replace coil as there is nothing else left. However do I want them to pull the dash, not so much. So we'll see. I don't have the patience to do the whole mold test.

tahawk69
07-09-14, 03:46 PM
I was wondering why the ac stunk so bad and it is a moldy smell. I for sure will not use the ac anymore when my 8 month old daughter is in the car. It can't be good for her little lungs. Hopefully gm will do the right thing and provide a correct fix for this issue especially if this could be a potential health hazard.

khs604
07-14-14, 03:12 PM
Can someone tell me which side of the car the condensation is supposed to drain out. I run my car in auto mode a lot but never see any water on the ground. I had the after blow feature activated and the dealer got rid of the moldy smell. Seems to be working so far.

GJB
07-14-14, 03:17 PM
Drivers side around the fire wall.

off1c3r
07-25-14, 12:59 AM
Does anyone have a TSB or any related information regarding how to fix this with the 2014's? My dealer won't do anything without a TSB. I'm going to have to leave the car overnight and hope they realize and see whats going on. Even then, they have no TSB to go off of since the existing one was only for 2013s..

ikireland
07-25-14, 05:50 AM
Im sure it's posted many times in this thread

#99-01-39-004E: Air Conditioning Odor (Install Evaporator Core Dryer Kit and Apply Cooling Coil Coating) - (Feb 10, 2014)

Only one I can find

nyinstaller
07-29-14, 01:28 AM
Tomorrow my car goes in for round three of ac smell.

flycaster
07-29-14, 07:55 AM
Check to see if the repair included use of new parts that were manufactured by a third party. I ask this because my SA told me that there is a new fix that utilizes third party part(s), and that they are presently on order at his place. My dealership, Ed Morse-Delray, FL, was the one that supposedly came up with the "level-the drain-pipe" fix that didn't remove the dash. I had that fix done a while ago and it did appear to work, but I'm now experiencing some smell so I'll be back in two week for the new fix.

Cadillac Cust Svc
07-29-14, 11:42 PM
Does anyone have a TSB or any related information regarding how to fix this with the 2014's? My dealer won't do anything without a TSB. I'm going to have to leave the car overnight and hope they realize and see whats going on. Even then, they have no TSB to go off of since the existing one was only for 2013s..

Hi off1c3r,

I知 sorry that you are having difficulties resolving this A/C smell issue with your dealership. If you would like some extra assistance when you take your ATS in, please PM me with your VIN, mileage, dealership name, and contact information and I値l gladly reach out to them on your behalf.

Have a great night,

Austin J.
Cadillac Customer Care

Kwagner115
07-30-14, 09:51 PM
Hi off1c3r,

I知 sorry that you are having difficulties resolving this A/C smell issue with your dealership. If you would like some extra assistance when you take your ATS in, please PM me with your VIN, mileage, dealership name, and contact information and I値l gladly reach out to them on your behalf.

Have a great night,

Austin J.
Cadillac Customer Care

My wife took her 2014 ATS to the dealer today with same problem. Musty smell when first starting car with air con on. They said there was nothing wrong. There is most definitely a musty small. Very Disappointed they did not take my wife seriously while she was there and I am now forced to get involved. Not how I expected them to treat my wife. Or anyone else for that matter!

This problem is real as proven by the numerous comments and complaints found here and other threads. And the fact Cadillac themselves by participating here acknowledge something isn't right.

Any assistance or guidance you can provide to resolve this situation would be greatly appreciated.

Kevin

carpenter
08-16-14, 10:31 AM
Posting from my phone here so I haven't gone back to reread all the posts. My car is in for the smell as well. My dealer talked with TAC who said that they had a file to download to program the after blow correctly. Apparently this is an issue depending on your VIN. TAC was confident this would fix the ac smell. I pick the car up today. I'll post my findings in say a week. Again, I haven't read the whole post here so maybe this has been done before.

Last time my dealer dealt with TAC they found the resolution for the voice commands switching to long prompt issue. Something many people in the community were wanting a fix for. Hopefully this issue is this simple.

nutoz
08-16-14, 06:07 PM
Well I finally have the moldy or sour smell on start up on my 2013 ATS. Took in Friday and talked to SA and mentioned that this issue has been posted on forum and I did not think there were "official TSBS" and mentioned other ideas. He looked at me with deer in the head light look. So he calls back 2days later and tells me that GM is recommending coating the evaporator coil. I ask him to is he coating the coil or the drain pan. He had no idea. He stated that if this does not work then need to explore further as even taking the dash apart.. They sound CLUELESS. they said they are also checking if there were some kind of pre fan mode programmed but were having computer issue.does any one know what this mode is?. What are they coating except some kind of coil cleaner to remove mold from coil and pan.!!
I am not confident that they will resolve this issue
Will update when I hear from the dealer

SCATS
08-16-14, 08:25 PM
I had it last week..dealer here in Detroit took car of it.. Problem solved in a one hour visit so far.. It was actually some sort of deodorizer I believe .. Mine hasn't had any moldy smell as of this post..

carpenter
08-16-14, 11:30 PM
I had it last week..dealer here in Detroit took car of it.. Problem solved in a one hour visit so far.. It was actually some sort of deodorizer I believe .. Mine hasn't had any moldy smell as of this post..

The deodorizer will work for a while, but if they don't fix what causes the smell there's a good chance it will come back. Mine was good for about 4 months. Today they reprogrammed the HVAC module for after blow.

Maxplot
08-17-14, 01:56 PM
At my oil change I mentioned the A/C odor, but more importantly I was concerned that I have never seen condensation drain out under my car. I was more concerned about where the evaporator condensation was going. So my dealer checked into it and found a bulletin to replace the A/C drain hose. (Bulletin PI1160B). To replace A/C drain tube, 4480138 - Removed Transmission to access A/C drain tube. Removed tubes - installed new drain.

The dealer listed over 10 hours of labor to do that. I still do not see any water draining out of the car while the A/C is on. I still have a little odor. I just hope that in the future I don't find that evaporator area rusting out.

flycaster
08-17-14, 02:42 PM
At my oil change I mentioned the A/C odor, but more importantly I was concerned that I have never seen condensation drain out under my car. I was more concerned about where the evaporator condensation was going. So my dealer checked into it and found a bulletin to replace the A/C drain hose. (Bulletin PI1160B). To replace A/C drain tube, 4480138 - Removed Transmission to access A/C drain tube. Removed tubes - installed new drain.

The dealer listed over 10 hours of labor to do that. I still do not see any water draining out of the car while the A/C is on. I still have a little odor. I just hope that in the future I don't find that evaporator area rusting out.

Your fix was the fix that my dealership developed and was adopted by GM. I had it done a while ago and now after several months, I think I am again detecting a moldy smell. Told my SA about it and he said that there now is an additional fix that required third party parts. I'm waiting the new parts to have the job done.

100%_N1
08-17-14, 03:22 PM
At my oil change I mentioned the A/C odor, but more importantly I was concerned that I have never seen condensation drain out under my car. I was more concerned about where the evaporator condensation was going. So my dealer checked into it and found a bulletin to replace the A/C drain hose. (Bulletin PI1160B). To replace A/C drain tube, 4480138 - Removed Transmission to access A/C drain tube. Removed tubes - installed new drain. The dealer listed over 10 hours of labor to do that. I still do not see any water draining out of the car while the A/C is on. I still have a little odor. I just hope that in the future I don't find that evaporator area rusting out.

I can't remember who said it or where, but they mentioned that the condensation is designed to drip on the hot exhaust after the pan. This is supposed to evaporate all the condensation. Others have noted that if you park on an incline facing uphill then you'll see the condensation drip because it doesn't hit the exhaust. Take that for what it's worth.

Cadillac Cust Svc
08-18-14, 11:57 AM
Well I finally have the moldy or sour smell on start up on my 2013 ATS. Took in Friday and talked to SA and mentioned that this issue has been posted on forum and I did not think there were "official TSBS" and mentioned other ideas. He looked at me with deer in the head light look. So he calls back 2days later and tells me that GM is recommending coating the evaporator coil. I ask him to is he coating the coil or the drain pan. He had no idea. He stated that if this does not work then need to explore further as even taking the dash apart.. They sound CLUELESS. they said they are also checking if there were some kind of pre fan mode programmed but were having computer issue.does any one know what this mode is?. What are they coating except some kind of coil cleaner to remove mold from coil and pan.!!
I am not confident that they will resolve this issue
Will update when I hear from the dealer

Hello nutoz,

I understand how frustrating this must be. I am happy to provide additional assistance while you are working with the dealership. Just send me a private message with your VIN, contact information, mileage and the dealership you're having the vehicle serviced at.

Katie O.
Cadillac Customer Care

----------


Posting from my phone here so I haven't gone back to reread all the posts. My car is in for the smell as well. My dealer talked with TAC who said that they had a file to download to program the after blow correctly. Apparently this is an issue depending on your VIN. TAC was confident this would fix the ac smell. I pick the car up today. I'll post my findings in say a week. Again, I haven't read the whole post here so maybe this has been done before.

Last time my dealer dealt with TAC they found the resolution for the voice commands switching to long prompt issue. Something many people in the community were wanting a fix for. Hopefully this issue is this simple.

Hello carpenter,

Please keep us all updated on the repairs. I'm sure your fellow forum members are curious to hear what the resolution is and if it is successful. Please let me know if you have any questions or would like assistance.

Katie O.
Cadillac Customer Care

flycaster
08-18-14, 12:08 PM
Some of these Cadillac dealerships are from another planet. Only explanation I can think of when they can't find the fix for the A/C smell. I don't know about other dealerships, but Ed Morse Cadillac Delray, FL has the fix. Have your guys call them....(888) 469-2898

carpenter
08-18-14, 12:26 PM
Some of these Cadillac dealerships are from another planet. Only explanation I can think of when they can't find the fix for the A/C smell. I don't know about other dealerships, but Ed Morse Cadillac Delray, FL has the fix. Have your guys call them....(888) 469-2898

2 days now and no smell anymore in mine. Didn't have to take anything apart on the car at all.

GJB
08-20-14, 10:37 AM
I have had the blower program and the drain tube repositioned and evaporator coated. Odor came back, next trip in I will ask about the 3d party part fix. Fly let us know how it goes when yours comes in. Latest issue is front camera service warning keeps coming on. glass is clean and lane departure warning is working so not sure what it could be.

Zl700
08-20-14, 12:04 PM
Some of these Cadillac dealerships are from another planet. Only explanation I can think of when they can't find the fix for the A/C smell.

It's not always an easy fix.

Google "Dirty Socks Syndrome" it's a common problem in autos and home AC systems.

Cadillac Cust Svc
08-20-14, 06:42 PM
I have had the blower program and the drain tube repositioned and evaporator coated. Odor came back, next trip in I will ask about the 3d party part fix. Fly let us know how it goes when yours comes in. Latest issue is front camera service warning keeps coming on. glass is clean and lane departure warning is working so not sure what it could be.

Hi GJB,

I知 sorry to hear that initial repair did not remedy the A/C odor concern. Please keep us updated on your next dealership visit, and feel free to PM me if you would like an additional layer of customer assistance when you head in.

Enjoy your evening,

Austin J.
Cadillac Customer Care

nutoz
08-20-14, 10:06 PM
ok dealer called Monday and stated that moldy odor was fixed. first thing they said they did was check afterblow enable ( he stated that my VIN indicated it was already enabled) document ID 2382151.
second they performed #99-01-39-004F AC ordor ( install evaporator core dryer it and apply coil coating) ( july 30, 2014) document ID 3955947 . this bulletin applies to 2015 and prior GM products.
this is a 4 page fix that looks to require lot of labor including in some cases drilling holes in the evaporator housing.when returning to house, AC did have cleaning agent smell ( very slight).
that evening on restart did get a faint moldy ordor but ran the fan on high thinking that might help removing residual ordor. this morning my wife stated she did not detect any moldy ordor.
I will keep checking rest of the week and will post update. also notice for the first time a condesation on my drive way when idling.

Katie O thanks for your offer of help on this matter but i will give some time and if I see that odor issue has not been remedied then I will PM you with all the info.

Bertha D Blues
08-21-14, 08:09 AM
nutoz, I had the same treatment as you. Afterward, the odor was still detectable but diminished with each hot humid day. I suspect that condensate was washing off any remaining residue from the coils. It seems fine now (knock on wood). Bert

oemtech
08-21-14, 11:46 AM
I really can't believe that Cadillac doesn't have a solution for this problem as it is not new to the A/C world. The issue is a dirty evap coil caused by the repeated use of the A/C. As it cools the incoming air it as removes moisture. This causes the contaminates in the air (dust, pollen etc) to collect on the coils. Over time mold spores start to multiple and you now get a bad smell at start up. The only way to correct this is to clean the coils. Just to show what I mean here is a photo of one of my A/C's on my RV before cleaning. Your looking at about 4 years of usage.

http://i185.photobucket.com/albums/x160/oemtech/RV%20AC/ACCleaning02.jpg

Now once you get all of stuff scrubbed off it will look like this. You need to be careful of what cleaning solution you use as it will be the smell you get for a few days after cleaning. You also have to be real careful in cleaning the fins as they are almost like tissue paper and with bend in a heart beat.

http://i185.photobucket.com/albums/x160/oemtech/RV%20AC/ACCleaning03.jpg

The real problem for cars is there is no real easy access to the evap coils.

nutoz
08-21-14, 06:19 PM
nutoz, I had the same treatment as you. Afterward, the odor was still detectable but diminished with each hot humid day. I suspect that condensate was washing off any remaining residue from the coils. It seems fine now (knock on wood). Bert


Thanks for sharing and giving me hope that this problem is cured. Smell seemed to be diminished quite a bit

Cadillac Cust Svc
08-22-14, 01:14 PM
Hi nutoz,

Very happy to hear that the dealership was thorough while addressing your A/C odor. Hopefully, this will have resolved the issue. If it comes back or you have any lingering questions, you know how to reach us.

Enjoy your day,

Austin J.
Cadillac Customer Care

flycaster
08-25-14, 04:21 PM
Have already had the drain level fix, but several months later, the smell has come back...but only slightly. But who want any smell at all? So, I just came back from having another fix done. Sure smells good and i hope it lasts. Here's what was done:

4480118 Apply cooling coil coating and install electronic evaporator dryer kit 882 WGM
12346390 Deodorizer
60607 Cleanevap
13356914 F-filter

off1c3r
09-09-14, 04:01 AM
After the first visit, the smell came back. The deodorizer lasted probably 2 days. I went again and left the car for a week. They said they replaced the air filter and deodorized. I'm a few days into it and I'm not sure if I'm smelling the old odor or just the deodorizer. It smells like 20% odor and 80% deodorizer. In any case, the smell came back within a day or two in the first attempt. At least now its taking a bit longer. I'll see what happens.

ikireland
09-18-14, 09:51 PM
Thought I smelt something yesterday on my way to work, went away shortly with windows down, got in this morning, was pretty rank. Conveniently enough I am a service writer so I got to work and wrote an RO on the car for the smell, we are swamped right now (damn recalls) so prolly won't get in the shop until best week. I will report back once we look at it. I'm sure it's going to be the standard after blow and clean and oil condenser etc. after that if it comes back I'll just write another RO and see. The crappy thing is that bulletin for the drain tube reposition or whatever only applies to a '13 and I have a '14 so we technically can't reference that and expect to get paid. So we will see. Time will tell!

bdwalters
09-19-14, 12:17 AM
What happens if y'all keep the car in recirculate mode?

quaraong
09-19-14, 12:35 AM
Mine persists with recirculate or not