My Tahoe did not come with XM, but no big deal, I have had Sirrius for over a year that mounts in the truck. I use a car kit that has an RF transmitter. It works, but with a Bose sound system, the digital signal is not fully realized. My question is there a way that I can hook up the sat radio to the AUX port of the stock radio? I do not have a DVD system, so the button is not used. I am assuming there would need to be some kind of adatper. Anybody have any experience?