I have a 2005 STS V-6 with luxury package. My surround sound system stopped working properly in the XM mode select. It seems like I have lost my rear speaker 5.1 sound. The system does work in the CD select mode. I told them it was probably the tunner but they are confused as if they do not know the first thing about this upgrade stereo option package. Has anyone else had problems with their Bose 5.1 systems?. If so what did the dealer do to fix it.
Thanks
Doug