Having problems with your 1999 Buick Century ?
Rear door windows are not operating. The motor runs both sides, but the won't raise or lower. Also they won't stay up. I can see a loose cable coming from the bottom up. I have the door panel open.
You must replace the windoe regulater.
Disconnect motors from regulator. you will see destroyed plastic rollers, wich engages motor and regulator gears. clean it, fill it up with epoxy glue and enjoy money saving
Repair Help & Product Troubleshooting for 1999 Buick Century
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