I have a had an issue with my 2006 chevy tahoe. The first thing that I noticed was the xm signal got muted and static sounding basically overnight. I thought this was a problem with xm and cancelled it. Then it happened to the rear entertainment as well, this time I heard the change while I was driving and it never got better. It has been like that since then. Radio quality is still good though. This is the stock Bose system. Anybody with any ideas I would love to hear them!