MikeMc 
My '06 GP has the in-dash 6CD changer Monsoon system but does not have a factory XM receiver installed. I've read that all GM head units from 2002 on up can control an XM receiver. I don't want to add XM but rather I want to add a hard wired iPod/iPhone interface. The interface I'm considering is the USASPEC PA15-GM. This interface apparently utilizes the XM bands on the head unit and incorporates the steering wheel buttons to control some of the iPod functions. Does anyone have experience installing one of these interfaces on a 2006? I don't want to replace the head unit with aftermarket unless absolutely necessary.
My question is: Do I need to have the head unit reprogrammed for it to recognize the XM bands and thereby the iPod interface, or is it plug and play?
Any other tips are welcomed.
Thanks in advance!
