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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1544 (POWER SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT BACK FRAME REPLACEMENT - FRONTREMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal 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. Remove the seat assembly from the vehicle. Refer to Seat Replacement - Front Bucket .
  2. Remove the seat trim panel. Refer to Seat Cushion Outer Trim Panel Replacement .
  3. Remove the front seat back. Refer to Seat Back Replacement - Front .
  4. Remove the seat back cover and pad. Refer to Seat Back Cover and Pad Replacement - Front .
  5. Remove the front seat back panel. Refer to Seat Back Panel Replacement - Front .
  6. Remove the lumbar assembly. Refer to Lumbar Replacement - Front Seat .
  7. Remove the seat belt and retractor assembly. Refer to SEAT BELT BUCKLE REPLACEMENT-FRONT .
  8. Remove 2 screws (1) securing the inflatable side impact module to the seat back frame.
    Fig 1: Locating Inflatable Side Impact Module Retaining Screws
    GM753528Courtesy of GENERAL MOTORS CORP.
  9. Remove the 2 push pins (1) securing the side impact module tub to the seat back frame.
    Fig 2: Identifying Side Impact Module Tub Push Pins
    GM753530Courtesy of GENERAL MOTORS CORP.
  10. Remove the SIR wiring harness (1) from the seat back frame.
    Fig 3: View Of SIR Wiring Harness, Lumbar Wiring Harness & Retaining Clips
    GM753527Courtesy of GENERAL MOTORS CORP.
  11. Remove the lumbar wiring harness (3) from the seat back frame.
  12. Remove the wiring harness clips (2) from the seat back frame.
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.