It could also be the window regulator. The cable breaks and the window stops working. You will still hear the motor running, but no up or down function.
If you find you need the whole regulator assembly, I have two from the front doors of a 93 TC I am parting out. I could sell you either one for 10.00 each plus shipping. I also have the rears but I will have to check if they are removed from the car yet. I've removed the fronts already, and I believe that they are reproduction parts.
Thanks Mike
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