Doitmyselfer

Ok I'll start at the switch even though I don't suspect that as everything but the radio is working. The retained accessory power is working as it should,like the windows and the dash lights. Could it be that relay would have gone only partially bad so that only the radio wouldn't work? Any thoughts?

Ok so I disconnected my battery ground a few weeks ago to work on my alternator and since then the radio won't work. Turns out the ignition switched wire has no power no matter the ignition position. The constant supply has power. All fuses check out good. All other accessories work fine. Any ideas where to start? 2006 Sierra

Ok so I disconnected my battery ground a few weeks ago to work on my alternator and since then the radio won't work. Turns out the ignition switched wire has no power no matter the ignition position. The constant supply has power. All fuses check out good. All other accessories work fine. Any ideas where to start?