Nope. Take it to the dealer and dig real deep into your wallet. GM is real good about separating owners from their money after the sale. That's how they stay profitable when they're running out of repeat customers. They will not allow me to buy their radio service manuals or parts because I might save you some money and they don't like that. Sorry.
Also, the Body Computer is built into the radio to prevent you from buying an aftermarket replacement. They know how to stick it to you. Wish I could help you out with some genuine advice but as you can tell, I'm not very happy with the way GM treats their customers.
Thursday, April 7th, 2011 AT 4:34 AM