My driver side speaker works sometimes and sometimes it doesn't work. I found out that if i hit the speaker cover on the door, it will turn back on for a few seconds. Also the rear speaker on the left side (same as driver side) is somehow connected to the front speaker because if i turn the fade all the way to the front/left, the left rear speaker is still playing. Any solutions before i start tearing apart the dash? OH BTW its a 2004 Bose System.

 

Moved, Wrong Forum for 2004's..
I would be looking at connections which means removing door trim.

 

Bose relay, look into it. Cost less than $3 tp fix