Anyone know how the Duramax/Silverado systems are setup? I have the Bose single in dash CD/cassette player that shows the station ID & songs. It's pretty nice for factory but I'm looking at a new head unit that plays mp3s burnt on DVD's as well as movies. Do the trucks run odd ohm speakers like the F-bodies? Any input or links to truck specific forums would be appreciated.

Thanks! Gotta get the hauler pimped out for those long hot days at the track