Thanks for that link. I may just try that on the driver's side rear window and, if it works, then I will 'tackle' the passenger side rear window.You should check out this link:
http://ifixit-documents.s3.amazonaws.com/ptZoYsnRXHL4TNJP.pdf
The issue is the thermister in the motor, the article give you a workarond to fix the issue. Very informative.
Sid