Since it is still under powertrain warranty i dont want to modify it with a tune and aftermarket tc as im afraid of having an issue and my warranty being denied. As far as a fix goes gn flushes the trash out of your transmission (how much damage has been done or is being done by this) than if that does t fix it they put in a new torque converter. Each one ive had has been a different part number so apparently the updates have not resolved the issue. I believe the real issue is in the transmission tuning and trying to get mpg by sacrificing reliability.
Well at 52k miles my 2015 Sierra 6.2 8sp has started to shudder again. Aleady had the torque converter replaced twice first at 16k and than at 34k, a yearly occurrence it seems. Its pretty obvious why gm dropped the 100k mile warranty. Whats the chance gm will actually come up with a fix for these transmissions or will they just abandon us that own them and hope we are dumb enough to trade into a new gm truck?
I just had my torque converter replaced for shutter for the 2nd time. Both time they lasted roughly 16k miles. Does anyone have high miles on their 8sp as i am very concerned about long term reliability. I see now why they decreased the powertrain warranty.
Just picked my truck up after having a new torque converter installed (for the 2nd time) and once again they claim they do not hear anything out of the ordinary. I believe they just have no clue how to fix and and dont want to throw more parts at it as my bumper to bumper warranty is about to run out.
My truck has the exact same issue with the noise and it starting after hitting a bump. My dealer has replaced the exhaust clamp and the drivers side exhaust manifold with no improvement. Now the dealer mechanic claims he doesnt hear it and all the noises he hears are normal. Im going back to the dealer tomorow for transmission issues with torque converter shutter and will have them look into the noise again.
I am having the same issue with my 2015. The torque converter has already been replaced once for this exact same issue. The transmission tech at the dealer told me that it the shuttering was not bad enough yet and to keep driving it until the vibration and shuttering gets worse. No diagnostic tools were connected to find out the amount of slip. They were also hesitant to work on it as it had been less than a year since the first replacement. Does gm give dealers a hard time about warranty repairs if they have a reoccurrence within a year? Obviously this would not be due to anything the dealer did or did not do but just poor parts quality or design issues. I know the gm customer service people lurk on the board how about providing contact information to someone that can give us a straight answer to the ongoing issues with these 8 speeds.
Your right these nagging issues make you paranoid. The truck already had an appointment scheduled to attempt to fix the noise issue it has when this started. This will be the third time they will atempt repairs for what sounds like a cracked exhaust manifold in the cab The first repair attempt they said it was the exhaust clamp, the second they said it was a cracked exhaust manifold, and this time they are thinking it could be the check valve in the fuel line. Basically the dealer just keeps throwing parts at it with no success and perform no post repair testing.
My 2015 6.2 sierra is going in for the 2nd time for a failed torque converter. First one failed around 16,000 miles and the second one has started showing the same symptoms at 31,000 miles. My dad has a 6.2 truck as well and his tc failed around 10,000 miles. Im getting a little concerned about having to replace the tc every third oil change and the long term costs after the warranty. Are others having the same issues out of these 8sp transmissions?
My 2015 sierra 6.2 has what sounds like an exhaust leak when under load or mild acceleration. It sounds like ithe noise is coming from the bottom of the drivers door. The noise increases and decreases with rpm's. Has anyone else had this issue?
Sitting in my slt cc truck today in Florida and noticed my child sweeting. With the ac on auto turned down to 65 no air was blowing out the magic underseat vents i see several praising. After experimenting i found i have to turn it to the floor setting to get some air moving through the vents, not enough to keep my child cool i may add. After leaving chevy for a number of years due to quality issues i decided to come back and while i enjoy the new body style truck over previous generations my f150 that i traded was a much better designed truck. The ac seats dis not blow hot air on my child rendering them useless, the heated seats got hot, it had reae ac vents, it didnt vibrate. The frame coating didnt peel off, was much roomier, and the radio and voice commands actually worked. Many other gripes but piss poor climare control is the worst for me at the moment, until i get on the highway and start vibrating again.
My new 2014 sierra has a vibration issue that starts around 70 and gets worse the faster i go. The odd thing is it comes and goes and is worse on smooth asphault than on rougher roads. The steering wheel and pedal are fine but the seat vibrates pretty bad. I only have 1200 miles on the truck and havent had a chance to go to the dealer yet.
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