My 2023 Tahoe Premier does the exact same thing. I’ve reset everything, tried disconnecting things like phones etc. I think it is related to the most recent software push we all received. It’s annoying as shit.
2023 GMC Yukon Denali - Beeps reverts to vibration almost daily. Have been unable to figure out a pattern or induce “flip” with same shutdown/startup procedure.
Is it a programming error, forcing a reset or is it intentional? In this day of corporate legal concern, maybe GMC firmware guys have been instructed to program vibration as a default to protect users that mistakenly or unknowingly set beeps by mistake!
Just throwing that out there!
Footnote on 2023 GMC Yukon Denali: Both keyfobs were programmed with exact setting, except seat position.