a plethora of problems, bodywise.

Well, the dent from a tree limb is visable , and another on the fender. I'm making a patch panel for the lower rear quarter for a 3 by 4/12 area that was dented and too thin to repair. But the issue that is best answered by a C body wagon expert, is, how to get the rear window mechanism out to clean and repair it. Switch is not the problem, possibly corrosion or gear in lift lower motor is jammed. I don't have access to a 73 manual for c bodies so I am ill at ease to start removing bolts. Is there anyone out there which can detail the removal process for me?
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Author: 73 suburban