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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1428 (SUNROOF SYSTEM)REPAIR INSTRUCTIONSSUNROOF MODULE ASSEMBLY REPLACEMENT (NEW STYLE MD4)REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Do not remove the headliner.
  1. Lower the headliner. Refer to Headliner Replacement (TrailBlazer, Envoy, Bravada) , Headliner Replacement (TrailBlazer EXT, Envoy XL) or Headliner Replacement (Envoy XUV) in Interior Trim.
    2. Fig 1: Accessing Sunroof Assembly Electrical Connector
    GM749612Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the sunroof harness electrical connector.
    3. IMPORTANT: Do not remove the drain hoses.
  3. Disconnect the drain hoses from the sunroof assembly. Refer to the following procedures:
    4. Fig 2: Identifying Sunroof Module Assembly
    GM749611Courtesy of GENERAL MOTORS CORP.
  4. Support the sunroof with an assistant.
  5. Remove the bolts that retain the sunroof module assembly to the roof panel
  6. Remove the sunroof module assembly from the vehicle and place on a clean, prepared surface with an assistant.
  7. Remove the sunroof motor/actuator from the sunroof module assembly. Refer to Sunroof Motor/Actuator Replacement (Old Style PEZ)  or Sunroof Motor/Actuator Replacement (New Style MD4) .
  8. Remove the sunroof window from the sunroof module assembly. Refer to Sunroof Window Replacement .
  9. Remove the sunroof sunshade panel from the sunroof module assembly. Refer to Sunroof Sunshade 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.