Apr 26, 2016, 01:29 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Tranmission Guides
- Camaro and Firebird: Transmission Diagnostic Guide
Guide to diagnose trouble and recommended solutions
Browse all: Tranmission Guides
LS4 Transmission Problem Thread (4T65-HD); Current Total Inside
Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
https://ls1tech.com/forums/ls4-front...e-project.html
It's what I did to reduce the liklihood of another trans failure.
Ahh. Just noticed this thread. I have the same issue as many of you. My tranny tends to slip when stopped at a light and then trying to go and also sometimes under high load in the upper rpm's. Do we have a fix for this yet?
Teching In
Joined: Sep 2010
Posts: 12
Likes: 0
trans finally gives up I was driving to class this morning, went to pull away from a stop light, and everything felt normal until about 15-20 mph. Then the revs went up and my impala slowed down. Didn't make it much further before I pulled into a parking lot. Give it juice, but no go. 2006 Impala SS, 66500 mi. Original trans.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
Added you to the list.
I was driving to class this morning, went to pull away from a stop light, and everything felt normal until about 15-20 mph. Then the revs went up and my impala slowed down. Didn't make it much further before I pulled into a parking lot. Give it juice, but no go. 2006 Impala SS, 66500 mi. Original trans.
Teching In
Joined: Sep 2010
Posts: 12
Likes: 0
Well had to go in to the shop today to get some things out of my car and got to see all the pieces of my trans that were shattered and/or melted together. One of my planetary gears was shattered into 4 pieces alone...good thing dealer is covering all work under warranty. Even got a rental impala to drive around in the meantime. Its got the 3.5 though..I miss my ls4 already
Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
Well had to go in to the shop today to get some things out of my car and got to see all the pieces of my trans that were shattered and/or melted together. One of my planetary gears was shattered into 4 pieces alone...good thing dealer is covering all work under warranty. Even got a rental impala to drive around in the meantime. Its got the 3.5 though..I miss my ls4 already
Make sure they replace the torque converter, as it may have some wear due to this failure, and the angry converter relief valve.
Teching In
Joined: Sep 2010
Posts: 12
Likes: 0
Okay thanks for the advice on the converter. I already have the car back though. Damage included: forward band distressed, 1-2 support drum damaged, 2-1 manual band damaged, reaction sun gear damaged, reaction complete carrier broken, input carrier broken, reverse reaction drum and input sun gear damaged....So basically I destroyed my tranny! I will contact them about torque converter tonight or tommorow
On The Tree
Joined: Apr 2011
Posts: 151
Likes: 0
From: Kenosha, WI
kinda worried now, just picked up my GXP with 46K, seems to be in very good shape, has brand new Khumos all around, previous owner took care of it, trans fluid is nice and red so it looks like a flush was recent, shifts smooth and no hard shifts at all, only i do notice that when it shifts to 4th at about 50-53 mph and the rpms drop to 1500, theyll jump to 2000 then go right back to 1500, dont feel anything in the trans though when this happens......
trans. prob. purchased 08 GXP with 86,515 3/15/11 when it was pretty warm out. now that it's getting kind of chilly here in upper DE for the time being, started to notice problems. after cold start, put in drive, and slightly step on gas, slip occurs. if you let off and ease goes fine, but if i continue to give gas slight shudder occurs. also seems to slip slightly from 1st to 2nd when cold. going to go and see if dealer can do something since it should be under transferrable 5/100 warranty. fluid is kind of brown but know that it really won't fix the problem if i just change fluid and filter, but may do so before taking it in.
On The Tree
Joined: Apr 2011
Posts: 151
Likes: 0
From: Kenosha, WI
purchased 08 GXP with 86,515 3/15/11 when it was pretty warm out. now that it's getting kind of chilly here in upper DE for the time being, started to notice problems. after cold start, put in drive, and slightly step on gas, slip occurs. if you let off and ease goes fine, but if i continue to give gas slight shudder occurs. also seems to slip slightly from 1st to 2nd when cold. going to go and see if dealer can do something since it should be under transferrable 5/100 warranty. fluid is kind of brown but know that it really won't fix the problem if i just change fluid and filter, but may do so before taking it in.
i dropped it off and did nothing to the fluid. it was warmer out yesterday when i took it. it didn't do what i was talking about but i did notice it slip in a higher gear not sure which one it was. i feel it's just a matter of time especially since i was going to take it to the track to see what it has.
On The Tree
Joined: Apr 2011
Posts: 151
Likes: 0
From: Kenosha, WI
my trans shifts from 2-3 pretty quick once its in 2nd, within a few seconds..............and the RPMs jump slightly when in 4th sometimes, i thought that was the DOD kicking in, are these trans problems?? Help me, i just bought this car and cant afford a trans right now......its got 46K miles
Last edited by rvd9431; Apr 3, 2011 at 06:21 PM.
Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
purchased 08 GXP with 86,515 3/15/11 when it was pretty warm out. now that it's getting kind of chilly here in upper DE for the time being, started to notice problems. after cold start, put in drive, and slightly step on gas, slip occurs. if you let off and ease goes fine, but if i continue to give gas slight shudder occurs. also seems to slip slightly from 1st to 2nd when cold. going to go and see if dealer can do something since it should be under transferrable 5/100 warranty. fluid is kind of brown but know that it really won't fix the problem if i just change fluid and filter, but may do so before taking it in.
Oh, and I added you to the list.
my trans shifts from 2-3 pretty quick once its in 2nd, within a few seconds..............and the RPMs jump slightly when in 4th sometimes, i thought that was the DOD kicking in, are these trans problems?? Help me, i just bought this car and cant afford a trans right now......its got 46K miles