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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1131 (Sunroof System) >> Repair Instructions >> Sunroof Window Height and Opening Fit Adjustment

Sunroof Window Height and Opening Fit Adjustment

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Correct adjustment cannot be achieved if the sunroof window is closed from vent position.
  1. Cycle the sunroof window from full open to closed position.
    2. Fig 1: View Of Sunroof Window Adjusting Screws
    GM977336Courtesy of GENERAL MOTORS CORP.
  2. Loosen the adjusting screws.
  3. Adjust the corners of the front window panel using the following guidelines:
    • Adjust the front of the sunroof window to -0.0 mm (-1.5- in) below the top surface of the roof panel.
    • Adjust the rear of the sunroof window to -1.5 mm (-0.0 in) above the top surface of the roof panel.
    • Adjust the rear edge of the front sunroof window to leading edge of the rear window to +1.0 mm (-0.05 in) to the panel shingling.
    4. NOTE: Refer to Fastener Notice .
  4. Install the sunroof window adjustment screws.

    Tighten:  Tighten the sunroof window adjusting screws to 6 N.m (53 lb in).

  5. Cycle sunroof window through all positions.
  6. Inspect the sunroof window adjustment. Adjust if necessary.
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