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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1548 (POWER SUN ROOF)REPAIR INSTRUCTIONSSUNROOF 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 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the sunshade to the sunroof assembly. Refer to Sunroof Sunshade Panel Replacement .
  2. Install the glass panel to the sunroof assembly. Refer to Sunroof Glass Panel Replacement .
  3. Install the sunroof module to the sunroof assembly. Refer to Power Sunroof Module Replacement .
  4. Install the drive motor to the sunroof assembly. Refer to Power Sunroof Motor Replacement .
    5. Fig 1: Identifying Sunroof Module Assembly
    GM749611Courtesy of GENERAL MOTORS CORP.
  5. Position the sunroof assembly to the vehicle with an assistant.
    6. NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the bolts that retain the sunroof assembly to the roof panel.

    Tighten:  Tighten the bolts to 10 N.m (7 lb ft).

  7. Connect the drain hoses to the sunroof assembly. Refer to the following procedures:
    8. Fig 2: Accessing Sunroof Assembly Electrical Connector
    GM749612Courtesy of GENERAL MOTORS CORP.
  8. Connect the sunroof harness electrical connector.
  9. Install the headliner. Refer to Headliner Replacement (Trailblazer EXT, Envoy XL) or Headliner Replacement (Trailblazer, Envoy, Bravada) in Interior Trim.
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.