Annoying Audio Problem

[Clint3240]

i have a 2003 1500 silverado LT with a bose system, and i have 2 teeters, 2 rears and 2 fronts, well both tweeters work but driver side front and passenger rear do not, on the front i switched the 2 speakers and they are fine, both work on the passenger side. what powers these speakers? i found a box that looks like an amp. would that have anything to do with it? i took the plug out and the sound stoped working. here is a pic. i did not swap the rear speakers and test that way because i think it may be the same problem up front

 

the dealer said my speaker was blown when i went in for a service but i just think they are frigging idiots and didn't want to check, so i swapped the speakers my self, not blown

[Clint3240]

anyone got an idea?

[jrrod2004]

Yes, this is the amplifier that GM gets from BOSE. Usually, this is what causes the sound system to fail. Have the dealership check the factory amp to see if it is functioning properly