Ok, I know this is probably been beaten to death here, but I could not find a specific answer as I searched through posts.. So here are the questions:
I just installed a AVIC X850BT with a PAC interface into an 05 Tahoe that has/had all of the bells & whistles, It has NAV, XM, RSE, Rear DVD, Bose, Etc.
SO, first issue is with the Onstar, it seems the radio does not produce audio until I hit the Onstar button on and then off. I am really not using Onstar, so I can live without it. But it seems like I am just missing something.
2. I am a little confused with the mute wires. (This
