Car Stereos: radio, gmc yukon denali, gm radios

Question
my 2005 gmc yukon denali with bose system has no sound but every thing is working

Answer
Dale, unfortunately, your radio is part of a batch of GM radios that are not built to the best quality needed to sustain long term functioning.  The radio has worked a loose connection inside, and it must be removed and repaired to work properly.  After repairs, it should not have the problem anymore.  Hope this helps, Scott