: Rough transmission downshift



caddydaddy
06-17-13, 02:43 PM
When slowing down, like coming to a stop light from 40 MPH or so, you can feel the transmission downshift twice and it's kind of harsh. Any ideas on what's going on? 99,000 miles on it now.
Also, when going at parking lot speeds, just coasting, if you give it a little throttle, there will be a bit of hesitation, then there's a "clunk" and noise, and then the truck moves a bit faster.
I took it to a dealer and they just told me that it's just getting wear in it. The trans in all the other cars I've owned with 70,000 more miles had no harshness. Or is this a truck transmission thing?

Thanks!

the cadillac man
06-17-13, 04:12 PM
When slowing down, like coming to a stop light from 40 MPH or so, you can feel the transmission downshift twice and it's kind of harsh. Any ideas on what's going on? 99,000 miles on it now.
Also, when going at parking lot speeds, just coasting, if you give it a little throttle, there will be a bit of hesitation, then there's a "clunk" and noise, and then the truck moves a bit faster.
I took it to a dealer and they just told me that it's just getting wear in it. The trans in all the other cars I've owned with 70,000 more miles had no harshness. Or is this a truck transmission thing?

Thanks!

I would check the transmission fluid level(like it shows in the manual) and see if it is low as mine did this and the fluid was low I added some and rechecked and it is normal and no harsh shifting

But these are trucks through and through so it will have different characteristics then a car(even though the ride is like a car)i

caddydaddy
06-17-13, 10:08 PM
The fluid level was normal.

the cadillac man
06-17-13, 11:26 PM
The fluid level was normal.

Has a tuner been used on the truck I know sometimes they can change the shift mapping(that's what it sounds like)in the PCM

is there any whining from the tranny while the truck is moving?

caddydaddy
06-17-13, 11:40 PM
Has a tuner been used on the truck I know sometimes they can change the shift mapping(that's what it sounds like)in the PCM

is there any whining from the tranny while the truck is moving?

No tuner used. My Uncle was the original owner and he's 70+ and not into performance. There are no strange noises. It up shifts fine, but downshifts are harsh.

the cadillac man
06-18-13, 12:34 AM
No tuner used. My Uncle was the original owner and he's 70+ and not into performance. There are no strange noises. It up shifts fine, but downshifts are harsh.

I would consult with a transmission shop as something doesn't sound right or even a different gm dealer

Since the truck is stock it shouldn't do like that

Mine has 164,000(give or take a few miles)on the clock had it shifts smooth both up and down(just have a bit of whine from where someone didn't fill the fluid up to proper level at some point in time)

90limited
06-18-13, 07:31 AM
My EXT does the same thing. If you coast and then step on the gas, you will get a clunk as the trans or drivetrain "reengages". It sort of reminds me of a ujoint starting to fail. Also, when coming to a stop, there is a lighter clunk as she drops back into first...:( I have not made time to dig into it yet but will let you know if I discover the cause.

JamieD
06-18-13, 09:19 AM
My EXT does the same thing. If you coast and then step on the gas, you will get a clunk as the trans or drivetrain "reengages". It sort of reminds me of a ujoint starting to fail. Also, when coming to a stop, there is a lighter clunk as she drops back into first...:( I have not made time to dig into it yet but will let you know if I discover the cause.

I have exactly that happening with my ESV. Took it to the shop where I bought it (my buddy is the mechanic) and he said the universal joints were fine...Hopefully it's "normal" and nothing serious.

caddydaddy
06-18-13, 01:25 PM
My EXT does the same thing. If you coast and then step on the gas, you will get a clunk as the trans or drivetrain "reengages". It sort of reminds me of a ujoint starting to fail. Also, when coming to a stop, there is a lighter clunk as she drops back into first...:( I have not made time to dig into it yet but will let you know if I discover the cause.

That's how mine is. It is like it reengages when you give it some throttle. I checked the U-joints and they are fine. The dealer said they were fine as well. With the truck on a lift and in neutral, I can hear the clunk noise inside the trans when I rotate the driveshaft back and forth.
I'd just like to know what it is and if it's just going to break one of these days!

Cadillac Cust Svc
06-18-13, 04:11 PM
I have exactly that happening with my ESV. Took it to the shop where I bought it (my buddy is the mechanic) and he said the universal joints were fine...Hopefully it's "normal" and nothing serious.

Hello JamieD,

I hope it is normal also and does not cause your vehicle any troubles. If anything in the future arises or you have questions, don't hesitate to reach out to us for assistance!

Sincerely,

Laura M.
Cadillac Customer Service

JamieD
06-18-13, 04:31 PM
Thanks, Laura. I'm new to the all-wheel-drive scene, so there are many things that I think are weird sounding, but my friend tells me are normal. The Escalade is a 2005 with just over 200000kms on it, so it's hard to tell what's normal or not.

the cadillac man
06-18-13, 04:53 PM
Thanks, Laura. I'm new to the all-wheel-drive scene, so there are many things that I think are weird sounding, but my friend tells me are normal. The Escalade is a 2005 with just over 200000kms on it, so it's hard to tell what's normal or not.

Mine has done the clunk from time to time from slack in the drivetrain and it is a all wheel drive

HoustonBussa
06-19-13, 08:41 AM
I seem to experience this "clunk" as well in my 2wd. Mostly when coming to a stop and was just thinking about coming on here to inquire.

Cadillac Cust Svc
06-19-13, 11:47 AM
Thanks, Laura. I'm new to the all-wheel-drive scene, so there are many things that I think are weird sounding, but my friend tells me are normal. The Escalade is a 2005 with just over 200000kms on it, so it's hard to tell what's normal or not.

You are welcome JamieD. I understand not knowing what is "normal" or not could be annoying, however, if your friend who is a mechanic gives you that advice, I would listen to them. Enjoy driving your Escalade :)

Laura M.
Cadillac Customer Service

VQT
06-24-13, 02:30 AM
When was the last time you change the transmission fluid? What does the manual maintenain schedule read about change trans. fluid frequency?

icaddy
06-25-13, 09:25 AM
Mine did the same thing. Just changed the fluid and filter two weeks ago and add some high mileage tranny fluid additives bought from Wal-mart. Drivers better now.

caddydaddy
06-25-13, 06:40 PM
When was the last time you change the transmission fluid? What does the manual maintenain schedule read about change trans. fluid frequency?

I changed the fluid (dropped the pan only) and filter 35k miles ago.

2005_ESCALADE
06-26-13, 05:57 PM
I changed the fluid (dropped the pan only) and filter 35k miles ago.

Did you notice a difference after you changed your trans fluid and filter? Mine does it also from time to time and it's all wheel drive. Please advise because if it became worse after changing your tranny oil, i'm not touching mine!

caddydaddy
06-27-13, 01:11 PM
Did you notice a difference after you changed your trans fluid and filter? Mine does it also from time to time and it's all wheel drive. Please advise because if it became worse after changing your tranny oil, i'm not touching mine!

It's been more recent than the last time I changed the fluid. I don't remember it being this bad, so I don't think it's fluid related.