My Truck 2019 Sierra started this same thing at the end of 2021. So Jan. 2022 I took it to the dealership and they said my entire Radio control unit needed to be replaced. After they replaced it and loaded/updated the software it seemed to fix it until recent had bad CPU code for the trailering system and they "updated" the software again and now the famn Password msg is back every 10 minutes! GMC STEALRRSHIPS SUCK BALLS!
I like the look Both ways. Just wondering how is the ride both ways? Riding stock on my 2019 Sierra 5.3 Crewcab is a little stiff and bouncy if you ask me.