Sierra Classic 3500 4WD V8-8.1L (2007)
2. Brush a small amount of lubricant on the entire length of both regulator rails. Refer to the illustration for lubricant location.
3. Cycle the door glass to verify that the noise is gone.
4. Reinstall the regulator following SI procedures.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
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