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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1760 (SUNROOF SYSTEM)REPAIR INSTRUCTIONSSUNROOF MODULE ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Sunroof Module Assembly

Courtesy of GENERAL MOTORS CORP.

With an assistant, position the new sunroof module assembly into the roof opening.
Install the bolts which secure the sunroof module assembly to the roof and tighten the bolts by hand.
Place a 12 mm (0.47 in) pin into the sunroof module alignment holes.

NOTE: Refer to Fastener Notice .

Remove the alignment pins.
Tighten: Tighten the bolts to 9 N.m (80 lb in).
Install the front and rear sunroof drain hoses. Refer to Sunroof Housing Front Drain Hose Replacement and Sunroof Housing Rear Drain Hose Replacement .
Connect the electrical connectors to the sunroof module.
Secure the harness to the sunroof module.
Adjust the sunroof window. Refer to Sunroof Window Height and Opening Fit Adjustment .
Verify the proper operation of the sunroof before securing the headliner.
With an assistant, install the headliner. Refer to Headlining Trim Panel Replacement .

RENDER: 1.0x

NO RELATED

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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.