The odd thing that points me to the motor and not the track or assembly is because you can close it by hand. If it were bound up then the motor nor your hand would be able to move it. So just because the motor still works doesn't mean it has the ability to move the glass any more.
I would replace the motor and then retest it. I attached the process on how to do this. Let us know what you find and we can go from there. Thanks
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Thursday, December 10th, 2020 AT 6:46 AM