bose 6 disc stereo no sound on 2004 GMC Sierra 3500

Ive got no sound, no door chimes ,no phone or onstar not working the radio seems to function other than no sound.the fuses have been checked ok and it has power running to the stereo. is there a pre amp and where do I find it.

by in Brightwood, VA on June 06, 2011
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1 answer
ANSWER by , June 06, 2011
suggest that you look for a local auto radio repair shop. if the preamp is problem, many times they can fix it instead of replacing it.