: TRANSMISSION POWER FLUSH @ 50K miles



danoh123
06-14-13, 10:41 AM
All the cars I had I never power flushed my transmission until after 100,000 miles. I see that we are recommended by Cadillac (v6 3.6L) to do so at 50,000 miles. It costs about $250. Do you thinking this is worth the money?

Tbbt
06-14-13, 11:22 AM
Danoh123,

I don't have my manual handy, but is the dealer saying it should be done or the owners manual? I will check my manual.

Just off the cuff, it would be odd for a modern transmission to need a power flush at 50K. Even if the manual tells us to do it, I wouldn't. A power flush doesn't remove the old fluid from the torque convertor and that's a no no. I'm guessing your dealer is trying to up-sell this? Let us know, Marv

BreakingThrough
06-14-13, 12:59 PM
I've been wondering the same thing. I just hit 50k on my '08, and the manual recommends "Change automatic transmission fluid and filter (severe service)" at 50k. It doesn't specify "Power Flush" vs. "Drain and Fill."

I *think* I might qualify for "severe service" (mostly city mile trips of less than 10 miles, only occasional freeway driving), but I'm not sure if they mean SEVERE, as in livery service severe. Can't trust the dealer -- they just want to upsell. As much as I like my dealer, I saw them turn some poor old man's $30 oil change into a $900 service on his Buick in the waiting room.

What would you do?

exm22psu
06-14-13, 01:06 PM
I changed mine myself at 55,000 miles. The hardest part is refilling the pan. I used a cheap pump and mounting tape to secure the hose in the drain plug (to take up the gap and limit the chance of fluid spilling back out rather than entering the pan). Once I had pumped the quarts into the pan, with the car level, I removed the pump hose and let it drain even and installed the bolt.

tinman
06-14-13, 01:24 PM
Is this something you can do yourself?
Never "Power Flush" anything except a toilet, and then be careful.

If you can do it yourself, I can send you (not PM you, but via your real email) a How To on this very topic. I was getting set to do this, but since I have 50,000 miles and my transmission dropped out twice in the past 30 days I do believe it has been done for me.

I would have rather done it myself, thankyouverymuchCadillac.

danoh123
06-14-13, 04:31 PM
Power flush costs $260. I believe the charge is from using special pressure generating equipment with detergent to clean out the transmission. BTW - i had a problem with transmission of 2004 Toyota Sienna at around 130,000 miles. The low gear had some jerking motion. 2 Power flush did not help at all. My friend recommended I use $10 Lucas additive: It solved the problem.

Z71
06-14-13, 07:00 PM
FORGET THE IDEA OF FLUSHING YOUR TRANSMISSIONS. Normal transmission maintenance is a good idea. Drop the bottom pan, change the filter and clean everything up and refill the transmission with fresh fluid. Do the cooler line/bucket purge if you arereally fastidious about changing all the fluid... but... DO NOT hook your transmission up to a flush machine. A flush will do absolutely nothing more than a good drain and refill will accomplish... and potentially a lot of harm. Do not take the risk. Just because some have had good experiences (or the lack of a bad experience) with a flush does NOT mean that they will always go good.

There has never been a reason to power flush a transmission other than to sell more transmission fluid. Thats what the machines were invented to do, make it easy for amateurs to sell ATF.

MoFex
06-14-13, 11:55 PM
FORGET THE IDEA OF FLUSHING YOUR TRANSMISSIONS. Normal transmission maintenance is a good idea. Drop the bottom pan, change the filter and clean everything up and refill the transmission with fresh fluid. Do the cooler line/bucket purge if you arereally fastidious about changing all the fluid... but... DO NOT hook your transmission up to a flush machine. A flush will do absolutely nothing more than a good drain and refill will accomplish... and potentially a lot of harm. Do not take the risk. Just because some have had good experiences (or the lack of a bad experience) with a flush does NOT mean that they will always go good.

There has never been a reason to power flush a transmission other than to sell more transmission fluid. Thats what the machines were invented to do, make it easy for amateurs to sell ATF.

Absolutely agree!

Joe
06-16-13, 06:56 AM
Don't waste your money. The fluid should be normal unless the transmission is giving you problems. GM will be happy to flush the cash out of yourwallet. I love GM but some of these money grabs are insulting.

danoh123
06-19-13, 08:26 PM
Dealer claims that without power flush only 80% of transmission / transfer case fluid can be drained thus they do not provide a service to simply drain and replenish the fluid. Well, I did not change the fluid at 50k.

MaxBuck
06-19-13, 10:09 PM
Seriously, what is the reason for changing one's transmission fluid?

tinman
06-20-13, 08:16 AM
Because after 50,000 miles or 5 years it has to deteriorate. Dirt and shavings get suspended and will slowly wear your parts, too. Change out your fluids, all of them. This includes Differential fluids, too. Why change your motor oil?

I'm not recommending changing out your trans and diff fluids every 10,000 miles, but they do need to be attended to.

MaxBuck
06-20-13, 09:43 AM
Just re-read the owner's manual. Recommends changing (not flushing) the ATF at 100k intervals. Sounds reasonable to me.

tinman
06-20-13, 09:54 AM
Whatever works is fine.

They also recommend changing the oil every 10,000 miles or so or whenever the diagnostics tell you. It might even recommend changing the oil once a year. To each his own. I'm good with 100k on the trans, but I would have changed mine at 50k if I hadn't dropped my transmission (twice) at that mileage.

HurstGN
06-28-13, 01:03 PM
Note, all fluids, that also means brake fluid should be changed. Many people omit this one.

dan87951
06-28-13, 07:22 PM
I follow what ever is in the owners manual for maintenance (except I do oil changes every 6500-7k miles). The engineers know what the cars require. I changed our diff fluid (front + rear) @ 30k miles and it was pretty bad from the all the break in shavings. I filled it backup with what GM recommended as well. I only do pan drops and change the filter as well. I agree never use a machine to "flush" the system out, that's when problems occur. A simple pan drop and refill is the best method. Those "flush" services leave all the shavings and old filter in the car... to me that's nuts!

CTSCHICK
06-28-13, 10:02 PM
The transmission filter is supposed to get changed after the flush is performed.
Knowing when to do it or when not to do it is the main thing for the safety of the transmission.

I have watched my b.f. do it on friends and neighbors trucks that tow a lot many times.
Including my own cars.

jimmie jam
06-30-13, 09:48 AM
my transmission dropped out twice in the past 30 days I do believe it has been done for me.

Don't assume that they changed you fluid. They will often just put the "old" fluid back in. Case in point, I had my C6 in for the common oil pan gasket leak. Since they have to drop the complete front suspension to get at it the service also calls for an allignment as the last part of this procedure. At the time of this service my one year was up on the oil/filter (oil/filter change is per DIC or 12 months, whatever comes first). He said we'll "take care of it". Sure, they changed the oil but not the filter thus contaminating the new oil, great. Then they said "yea, we took the front suspension down but put it back the same way so we didn't need to align it". The point here is NEVER "assume" they changed the fluid even though the service calls for it.

lvdw55
06-30-13, 05:44 PM
Don't assume that they changed you fluid. They will often just put the "old" fluid back in. Case in point, I had my C6 in for the common oil pan gasket leak. Since they have to drop the complete front suspension to get at it the service also calls for an allignment as the last part of this procedure. At the time of this service my one year was up on the oil/filter (oil/filter change is per DIC or 12 months, whatever comes first). He said we'll "take care of it". Sure, they changed the oil but not the filter thus contaminating the new oil, great. Then they said "yea, we took the front suspension down but put it back the same way so we didn't need to align it". The point here is NEVER "assume" they changed the fluid even though the service calls for it.

Good point, NEVER assume. Remember when you ASS/U/ME, you make an ASS/ (out of) U/ (and) ME.

tinman
06-30-13, 09:27 PM
Amazing, simply amazing.

A moot point now. My trans took a third dump inside of 2 months. Now, I am told, a new trans is on order. I presume they include new fluid.