I have a 2002 equipped with the onstar system. I just recently installed the Panasonic 7" in dash cd/dvd/tv, its the 7200 model. Anyhow I purchased a wire harness from a local shop, and it is supposed to be for 89 and up gm vehicles. Anyhow everything is wired up correctly and I get no sound. There is an extra clip hanging back there, perhaps I need a different harness? Maybe my onstar has something to do with this, I dunno.
Any suggestions would be greatly appreciated. Thanks Much!