SSsierra

I am getting this issue and I do not have the shims. I have 2020 Sierra 5.3/with 10 spd tranny

I have the 5.3 /10 speed and I also definitely have this issue, I think it is the driveline also

I have a 2020 Sierra 5.3 with 10 spd tranny and I have the low speed shudder. Awaiting recommendations from gm pico scope findings. I really think it is a pinion angle issue

I have a 2020 sierra crew cab with 5.3, 10 spd trans and having low speed vibration 28-10 mph (deceleration or acceleration). I took vehicle to dealership on Monday. Two days later dealership called and stated all the test they performed (DFM, Trans mount ect..) was working as design and nothing could be found to cause issue. During this call I stated to service manager what was I suppose to do just live with this issue. I also stated that i was on GM truck forums and there where numerous identical issues, do I need to have a GM-Tech reach out to them? Service manager said let me talk to shop foreman/supervisor and see if there is anything he can do. Next day service manager was having another Pico scope test done to try and find issue. UPDATE; Shop foreman/supervisor called GM-Tech and they requested another Pico Scope be performed and to send them the results. Currently waiting on GM-Tech for guidance from Pico Scope results, should hear back from GM next week. I requested a loaner vehicle and dealership stated i could come get my truck and that it was safe to drive until they get the guidance from GM next week. Will update when GM gives guidance.

I am in the right thread, most on this thread are talking 2019-2020 issues with 5:3 and 6.2 with 10 spd

I have a 2020 sierra crew cab with 5.3, 10 spd trans and having low speed vibration 28-10 mph (deceleration or acceleration). I took vehicle to dealership on Monday. Two days later dealership called and stated all the test they performed (DFM, Trans mount ect..) was working as design and nothing could be found to cause issue. During this call I stated to service manager what was I suppose to do just live with this issue. I also stated that i was on GM truck forums and there where numerous identical issues, do I need to have a GM-Tech reach out to them? Service manager said let me talk to shop foreman/supervisor and see if there is anything he can do. Next day service manager was having another Pico scope test done to try and find issue. UPDATE; Shop foreman/supervisor called GM-Tech and they requested another Pico Scope be performed and to send them the results. Currently waiting on GM-Tech for guidance from Pico Scope results, should hear back from GM next week. I requested a loaner vehicle and dealership stated i could come get my truck and that it was safe to drive until they get the guidance from GM next week. Will update when GM gives guidance.

I traded my 2014 5.3 with 6 psd for a 2020 5.3 with a 10 psd and the 2020 is much responsive and quicker than my 2014 was and it had a custom tune

Rick did you find any more info on chrome fog light sussound? I have a 2020 SLE and wanting to add fog lights with chrome surround