B.R.67

The BBB was real helpful you might want to give them a shot. Once I contacted them GM was calling me and the parts were in and the dealer was making and appointment the problem I had was they has to attempt to fix three times in order for a buy back or replacement. But also now if GM says there is no fix IBekeive that is grounds for a buy back or replacement

I have a 2019 RST 5.3 8 speed SU 4 axle leased it in June of 2019. At 400 miles it was making the axle noise. Waited for a year to get parts and had to file a claim with the BBB. They put parts in it 2two times in July of 2020 and I thought it was fixed. I drove to North Carolina this week and it is back. Not as bad as it was but it is there. I cannot GM is still putting these trucks out there with no fix.I have had a lot of issues with this truck I have owned Silverados and Sierras my entire life but after this truck and GM response to these issues I will have to try another brand a year front now when my lease is up.

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Has anyone had any luck fixing wind noise issues. Mine is on the drivers door and it sounds like coming from around the mirror.

No issues with mine I'm very satisfied . It's almost like driving a different truck. It really improved the transmission shifting.

My noise ended up being the plastic duct work behind the drivers side instrument panel going to the vent on the dash.when you were at a higher speed it would rattle on top of the metal bar that is part of the dash assembly. I placed burly seal between the duct and bar. I found the problem on this forum so it has been a issue with other trucks.

Already tried the complete stop idea from GM. Nice try.

I have the same problem on my 5.3 8 speed 2019 Z-71. I'm unhappy with the 8 speed transmission overall and will not have one in my next truck.

Well funny you should ask that...when I received my truck back after repair the work order had stated they replaced a Ring,Seal,and Slinger and all had part numbers. I asked What about the stub shaft that was back ordered for six months. The service manager told me we put that in the truck but we received it from a different supplier? So did they actually put a shaft in? I told you it's keeps getting better. Document everything I have 8 pages of documentation on everything that has happened with this truck in the last year. BBB did take my claim but said thay had to make 3 attempts to fix it .I think they tell you parts are on back order to avoid the attempts to fix it. Because they know they do not have the fix. A GM service advisor did tell me back in October they did not have a fix at that time.

SU5 axle also, unreal. I have a 2019 RST SU 4 axle I purchased on 6/14/19 I had the axle noise at 400 miles. Also the no start issue.went through two dealerships and two GM advisors. GM Customer service advisors are unbelievably terrible. Wont even return calls. Ordered parts for axle in October 2019 after pip was updated several times. Dealer kept spinning me saying stub shaft on back order.finally April 2020 I filed with BBB with a claim and stated how can they make three attempts to repair when they don't provide parts. Two days later a stub shaft arrived at the dealer and GM is calling me everyday. Never would call be back before. I had the parts replaced on June 14 ,2020 1 year after purchase. I have 1000 miles on it in very hot temps and no noise as of yet but not confident it will remain quiet. I still am waiting on back ordered parts for my no start issue that is a whole other story. I am a diehard GM guy I have purchased 6 new silverado and 2 new impala in the last 20 years .GM treats you like garbage. Nobody should have to go through this.buying the wife a new SUV this summer no way in hell will I drive into a GM dealership to buy one. it appears with both SU 4 and SU 5 axles both making noise I will be not driving another new silverado in 2022 when I buy a new truck. Good luck to you I know what your going through.

That's the problem they don't know how to fix it. I started this thread last August and have a new truck that will be a year old in June and continues not to start..no engine light , no codes.just a little frustrated.

Thank you I appreciate the help.

Ok thank you. Stub shaft,singer,seal have been ordered since October for my truck and stub shaft has not come in. My GM advisor has not contacted me since October.Gm advisor did tell me in October they did not have a fix for this. I guess my next step is a attorney. I have a log and all recepts of this whole mess. Truck will be a year old in June. Thanks again.

Did GM purchase your truck back from you because they could not fix the differential noise or did your truck have other issues as well. Just wondering because my truck has the differential noise as well along with other issues.

I'm with you...parts have been ordered for the axle issue since October. I have zero confidence the parts will fix the issue if and when they do come in. meanwhile I'm at 5000 miles and the junk transmission only seems to be getting worse. Bad vibration and shutter now, along with hesitation,surging, hard down shifting and slamming into gear. Dealerships says it has the new transmission fluid in it and they don't feel nothing? Whatever.... I have not heard from my GM advisor since October, they could careless. very poor customer service. Well at least the thing has been starting for me now it must have fixed itself because they could not find a cause for that issue.I have been GM truck owner my entire life. This is junk.