Hello all, I'm new here and a proud owner of a silver 2004 CTS-V with 10,000 miles on it. It's awesome. My issue. When I go to XM1 or XM2 and rotate to channel 0, my radio ID says UNKNOWN. The owner's manual says when that is indicated, it's faulty hardware or receiver. Does anyone know what I am looking at or what the corrective action is? Am I going to have to replace the digital radio receiver and if so, does it need to be programmed? Any help would be appreciated. Thank you,
Ivan
Ivan