@Z7122 , what is the DFM that you're referring to? I tried L9, and like you, the noise disappears. I am by no means well versed in the technical or mechanical aspects here. I'm struggling to understand why the injectors would make the noise in Drive, but not in L mode. Also trying to figure...
I've got the same noise with my 2022 Z71 6.2. According to the dealer, the noise is the injectors. I do a lot of business travel and have rented a bunch of the current body style (2021/2022) Tahoes/Yukons, and strangely, they have all had the 6.2. I have not had one that has had injectors...
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