My buddies '08 1500 has the same radio and has sat. He accesses the satellite thru the Mode button. When I press the Mode button I only get Aux, no Satellite option. I did buy the truck used and I already have an external unit and Sirius account. But would rather not have all that crap in my truck. Prefer the clean install of the factory unit, especially if it's just a simple plug n play procedure.