Okay everyone. I've been through the forums and haven't really seen any answers. I have the AVIC FB90 double din. I want to install it into my G6. I am NOT worried about losing Onstar or all the bells and whistles in the stock radio. I just want to get my deck in. Does anybody have the wiring diagram for the 08 G6, so I can wire up my deck ? Or has anyone had any luck finding a harness and DD mount? Thanks for the help in advance .