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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 835 (SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT BACK FRAME REPLACEMENT - FRONTINSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Position the seat back frame on the seat.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the recliner arm attachment bolts (2).

    Tighten 

    1. Tighten the bolts to 53 N.m (39 lb ft).
  3. Install the inboard pivot bolt (1).

    Tighten 

    1. Tighten the bolt to 35 N.m (26 lb ft).
  4. Install the seat belt retractor. Refer to SEAT BELT RETRACTOR REPLACEMENT - LEFT FRONT or SEAT BELT RETRACTOR REPLACEMENT - RIGHT FRONT in SEAT BELT SYSTEM .
  5. Install the lumbar assembly (or power lumbar/bolster assembly if equipped). Refer to LUMBAR REPLACEMENT - FRONT SEAT  .
    Fig 1: Installing Recliner Arm Attachment Bolts
    G01459163Courtesy of GENERAL MOTORS CORP.
  6. Install the seat back trim cover and pad. Refer to SEAT BACK COVER AND PAD REPLACEMENT - FRONT  .
  7. Connect the lumbar cable (6) underneath the seat cushion (disconnect the wire harness if equipped with power lumbar).
  8. Install the seat trim panel. Refer to TRIM PANEL REPLACEMENT - FRONT SEAT  .
  9. Install the head restraint and guides. Refer to HEAD RESTRAINT REPLACEMENT (CADILLAC)  or HEAD RESTRAINT REPLACEMENT (NON-CADILLAC)  or HEAD RESTRAINT REPLACEMENT (FOLDING)  .
  10. Install the seat into the vehicle. Refer to SEAT REPLACEMENT - FRONT BUCKET  .
    Fig 2: Connecting Lumbar Cable Underneath Seat Cushion
    G01459164Courtesy of GENERAL MOTORS CORP.
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.