GeorgiaRST

I put them on last week and the sound is completely gone as well. I let the customer care rep at the dealership know and they just stopped responding to me at all. I did report the issue to Chevrolet and GM. I can’t fathom why they wouldn’t want to fix this especially since it’s so easy to remedy.

At least they are attempting to fix it. The dealers here in Georgia won’t even try to at this point. Still very frustrating and not something you should be experiencing with a new truck.

Add me to the growing list. 2021 RST z71 4WD. I purchased it two weeks ago and noticed the clunking backing out of my driveway on the 3rd or 4th day. It’s louder now and gravel roads are awful. It’s non stop on uneven roads. Scheduled a service appointment. At that point I went ahead and opened a claim with their customer care department because I had already read this thread and told them I was prepared for the service department to give me the run around. I called the dealership got passed back and forth and then the service manager told me on the phone the rear ends are just noisy and there is probably nothing they can do. I took it in and they did nothing, said it was fine and normal for these truck models. I laid it out that is an embarrassment for GM to have 50-75k trucks that clunk around like the u joints are busted. I also gave them the TSB and referenced it. They said it’s not pertaining to 21s. He said his 2020 2500 does it too. That may be fine for him but not us. Called the customer care person and expressed displeasure again. Told her I have lost all trust in the dealership since they won’t do anything. Provided her all the information I have for repairs. Contacted another dealer and they said it was normal as well and the service managers truck makes those noises too! Imagine that! I then told him there is absolutely a fix for this and referenced the TSB. He told me the factory installed components are different on the 2021s compared to the 19-20 models. He did finally say they would look and see if they could fix it but I told them no thanks at that point. I then had a certified chassis mechanic drive and check it out and he thinks it’s the springs as referenced by other posters as well. I have an open complaint with GM now as well. She is trying to get me to come back to the dealer to look at it again and ride with several people. I don’t have any faith in that options because I’ve already got the run around twice. I have a hard time believing all the new 19-21s sound like this. I talked to a steel company with a new fleet of them and he said theirs aren’t making noise. Spoke to a few other people that said they don’t notice any noise from the rear end. I ordered the spring things kit to fix myself but I’d rather not since I just bought an nice new truck so I wouldn’t have to mess with anything did awhile. has anyone else had any success with the TSB dealer repair?