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Jeep Grand Cherokee
Jeep Grand Cherokee Laredo

What should you check first if the left rear or right rear power window on a 99 Grande Cherokee Laredo will no longer go down?

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2011-09-13 13:00:24
2011-09-13 13:00:24

The wiring harness that goes from the dashboard to the driver side door is the culprit most of the time. If you pull the rubber boot back, you will most likely find one or more of the wires in the harness has failed (broken or gotten cut).

AnswerThe child security lock got hit. Its on the back side of the door near the locking mechenism where if it is closed you cant get to it just flip it back. AnswerReplace the window switch(es). AnswerI'd check the window fuse in the fuse box, the wire connection itself for physical obstructions (ice, dirt or other debris) and finally the window motor. AnswerJust did my right rear on a 99 JGC. It needed lubrication.

The window was stuck so that the motor could not turn. I suspect a weak motor so as not to cut peoples apendages off, but after a few years the track becomes dry and not condusive to passage of the window.

To cure I removed the mechanism inside the door (7 screws), and lubed using white lithium and silicon to grease the track , track arm to hold the window and the pulley mechanism which uses a wire and pully to move the window.

Once it was well lubed I placed it back in and she ran like greased lightning !

Good luck

Its usually the window switch i just had that same problem on my 1996 jeep i replaced the switch and it worked fine.

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