Head unit works; but no audio. 03 Z71

[hendedo]

Hello all. 03 Z71, 120K miles, all stock audio; Bose system. Strange event. All audio worked fine this morning. When leaving this afternoon, nothing coming from speakers. Never gave any problems before and sound quality has always been good.
Is there a "Mute" button we could have hit by accident? Where would I find it?
Is there a fuse for the output side of the audio? Which one would it be?

Any ideas would be great. Thank You.

 

[BEEMDUB]

check the amp fuse it should be labeled RDO FUSE under the hood.

 

[scottg918514]

Had same issue in an '03 Tahoe LS. Next day it worked again and never happened again. Weird, but maybe you will have the same luck.

 

[LOWHOE775]

It sounds like the stock amp of the Bose system is not turning on. Does your radio turn on? I believe there is a fuse for that amp it's under the hood and its a 10 amp I have to check on what it's labeled. Try disconnecting the neg terminal too..