Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 475 (SUNROOF SYSTEM)REPAIR INSTRUCTIONSSUNROOF WINDOW REPLACEMENTINSTALLATION PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic
Installation Procedure
1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Important: Ensure that the information logo stencil on the sunroof window panel is at the rear of the opening.
- Position the sunroof window panel into the sunroof module.
- Install the sunroof window panel screws to the sunroof module.
Tighten
Tighten the sunroof window panel screws to 4 N.m (35 lb in).
- Adjust the sunroof window panel as necessary. Refer to SUNROOF WINDOW HEIGHT AND OPENING FIT ADJUSTMENT .
- Inspect the sunroof window panel for proper operation.
- Close the sunshade.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.