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911/Q45 »
https://forums.nicoclub.com/911-q45-u148.html
Mon Sep 23, 2002 9:27 am
Very common problem. Broken window regulator, connects window to motor. Under $100 part, straightforward, bolt on replacement. Pull the armrest toward the rear, disconnect bolts and clips, swap it out, reverse. You can pull up the window by hand and it should stay in place while you're waiting for the part. Grocking noise? Must have read "Stranger in a Strange Land".