u/totaltimeontask

2005 suburban 2500 6.0/4L80

I bought the suburban a year and a half ago, and the radio functioned fine. Since then, sporadically, but near-permanently now, the radio will turn on when I turn the key to accessory, and will stay on BRIEFLY (30-45 seconds?) when I turn the engine on, then will shut off. Just zero power at the head unit.

Once I cut the engine off and go to accessory, the radio will power back on, and then when I remove the key, it shuts off like normal.

I also randomly get an occasional door chime that stays on when I turn the key on engine on, regardless of the door being open or shut, and sometimes will keep chiming when I turn the key off. No text in the DIC on the dash. Door ajar switch and dash warning is 100% accurate to the door being open and shut.

Radio issues and door chime are not synonymous. They happen separate from the other as far as occurrence.

My theory is either a failing ignition switch that has a short in it telling the radio to kill power, and telling the door chime that it’s still in accessory mode.

Or, the door chime is from the door latch mechanism going bad.

I really just want my radio back. Any theories?