I have been having trouble with the audio in my '02. It is the base system non-bose. The drivers side speakers only work 5% of the time. If I adjust the fader to full driver's side only the A-pillar tweeter responds (barely). I pulled the head out checked the harness and grounds to the doors and checked the connections at both door speakers all are in great shape. I have heard that the amp is in the rear driver's cargo area for non bose systems but after pulling the panel I found nothing. I figure it has to be a loose connection somewhere and wanted to check the amp, but can't find the damn thing. Also could it be the head unit itself causing intermittent signal failure. I don't have an extra to test it out.