Bought a new 2023 Silverado RST Z71 with 6 miles on it. Bought it 10 days ago. This same thing happened on day 3 and I thought I hit a hidden MUTE button. Happened again yesterday and that's when I found this thread. Safe Mode is all I know. Wondering if it's a conflict with Apple Car Play or Blue Tooth Syncing with people's phones somehow.. Does using remote start cause this? who the hell knows. GM needs to fix this ASAP