Rear window went up fine, now it won't go down, so I can't unlock and use the back gate.
A friend did some trouble shooting and in the rear driver's side quarter panel found what looks to me to be a fuse/circuit panel w/2 "fuses" on it that he says needs to be replaced. He says it's the "motor" but it doesn't match any images for "rear window motor" I am finding.
It made a clicking sound when pushing the button for the window to go up but made no sound when the button was pushed to go down. I can't find out the exact name of this part so I'm not sure how to find it used.
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I know this question is old, but I am responding so others with the same problem can see. I wired the Rear Window Motor Park Signal wire and the Rear Window
Motor Speed Signal wire together and it completely bypassed the rear
wiper motor. Now the window goes up and down. This doesn't fix the rear wiper motor, but you will be able to have access to it now that the window is out of the way
The locking mechanism on the rear lift gate for the Chevy Uplander has some plastic and rubber-coated parts that can get jammed. If you can pull back the panel from the inside top near the glass, you can reach down and try to spray some silicone lubricant into the lock. This could help get those parts unstuck so they spring back when you pull on the handle latch from the outside. Once you get the rear hatch open, I recommend taking out the locking mechanism and thoroughly lubricating it. Your rear lift gate will start to release very easily from then on.
You also have Circuit Breakers for your windows, Or your Master Switch ,You can Test the Driver Control Switch or the rear switches by removing the Switches and using the connector Plug and a Jump wire try jumping accross the wires,if they go up or down you could have a Bad Switch,if nothing moves more than likely your Window Motor is bad. BUT first CHECK your Circuit Breakers ,It could be Labeled as accessery Relay or circuit Breaker.
They are not related ...
The lift gate locking mechanism can be accessed by removing the interir trim pannel on the gate ... and locating the locking actuator and replacing it...
The same can be done for the power window motor ... remove the interior trim panel and replace the power window motor...