I have a 2004 suburban with the OEM radio, internal 6 cd changer, Bose, On-Star, XM, rear seat controls. I would like to be able to play my Ipod through it. Is there an easy way to connect an Ipod? I wouldn't mind replacing it with a more modern unit, even an aftermarket radio, but there is so much that goes through the radio, I don't want to mess anything up or loose features like chimes, play after you stop the car, etc. I've seen the some of after market adaptors, but has anyone installed one on this type of setup? If so, how did it work and did you loose anything?