I have a 2013 Sierra 2500HD, 6.0 gas. Normally when I turn off the engine and open driver's door the radio turns off. Now it stays on and I have to turn it on and off manually. There must be other t...
Do the dome lights shut off like they should? if so then less likely the door switch. good luck diagnosing. I'd try chebbie truck forums for a greater chance of an internet solution.