i have a 2004 SLT 2500 i am having trouble with my rear passenger window ( drivers side) well it quit working and i figured it was the regulator,so i replaced it and that did not correct it. What it does now is only go down with the rear control, will not go up, and from the drivers seat it will do neither up or down.

 

Hi, a while ago I had problems with rear door lock and window not working on drivers rear door. I had traced the problem to be the wires as they pass through the rubber tube at the door hinge. Over time and use, the bending and unbending of the wires causes them to eventually harden and break at that location. Similar to bending a paper clip back and forth until eventually it snaps. I found the door wiring to have done that. Really stiff wires in that mid hinge section and 4 of them had snapped.

The fix was I had some really soft wire here from other projects. I cut out the stiffened hardened section of wires and spliced in new soft wiring for each of all of the wires in the bundle. Problem solved. That was 4 years ago. Still working fine. I have a picture somewhere. ...... I suppose a new harness could be acquired and routed. I was comfortable with my skills at soldering and heat shrink tubing to splice each wire. Took a couple hours start to finish.

Perhaps look into that possible cause on your truck.

 

 

Happy to help!