Why wont' back left window roll up or down?
We replaced the master window switch control, but that didn't change
anything. 3 windows roll up and down, locks work and mirrors work. Any
Did you check for voltage and grounds at the motor in the door that the window doesn't work? If you have voltage and grounds and they switch when the switch positions change then you have a bad motor if no voltage or grounds then you have a wiring problem. Jeeps seem to have a lot of problems with the wiring in the tunnel between the door and the body, might be worth a look see.
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