There was a thread a couple of years ago that gave a link to someone selling GM Factory Navigation Units for around the $500-$600 range... does anyone have that handy. I have been searching for over an hour but cannot find the link... Maybe someone remembers or was subscribed to it...

Thanks

 

ive bought some on ebay for that price and there complete with disk, anntenna, etc.....

 

I know this is old, but I had an idea to change mine out. Do the trucks come prewired for it? Would it interface with my On-Star, BlueTooth, and XM? Anyone to answer this deserves a pre-thanks!