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Reply To: 2021 6.2L Trail Boss Noise when downshifting coming to a stop

October 15, 2021 at 10:56 am #675821
skipit79
Participant

Here’s the deal with my scenario, I’ve had my truck into my local Chevy dealership 4 times. One of the times they tried replacing the exhaust valve next to the muffler and told me it was fixed. When I told them it wasn’t I brought it back and they basically told me they don’t know what the problem is and want me to wait for GM to release a service bulletin on the issue. I’ve tried my local GMC dealer and a Cadillac dealer. The foreman at Cadillac told me to just keep my windows up and to turn up my stereo. No one in my town seems to want to work on this thing to fix it.

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