I have a 2003 1500 quad cab with Infinity sound system .Problem being back speakers do not work any ideas ? I have checked speakers & think they are ok also pulled fuse on amp which shut off all speakers. Thanks for any help,Stan

 

I've always heard they're bad about breaking wires in the rear door looms. I haven't had that problem on my truck but I rarely have any backseat passengers.

 

I have kinda the same issue with my 07 reg cab, the passenger door 6x9 cuts out on me an I can't figure out why.