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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 716 (POWER 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 is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Position the seat back frame on the seat.
Install the recliner arm attachment bolts (2). Tighten the bolts to 53 N.m (39 lb ft).
Install the inboard pivot bolt (1). Tighten the bolt to 35 N.m (26 lb ft).
Install the seat belt retractor. Refer to SEAT BELT RETRACTOR REPLACEMENT - LEFT FRONT or SEAT BELT RETRACTOR REPLACEMENT - RIGHT FRONT .
Install the lumbar assembly (or power lumbar/bolster assembly if equipped). Refer to Lumbar Replacement - Front Seat (Manual) or Lumbar Replacement - Front Seat (Power Lumbar/Bolster) .
Install the seat back trim cover and pad. Refer to Seat Back Cover & Pad Replacement - Front .

Fig 1: Seat Back Assembly
Courtesy of GENERAL MOTORS CORP.
Connect the lumbar cable (6) underneath the seat cushion (disconnect the wire harness if equipped with power lumbar).
Install the seat trim panel. Refer to Trim Panel Replacement - Front Seat .
Install the head restraint and guides. Refer to Head Restraint Replacement .
Install the seat into the vehicle. Refer to Seat Replacement - Front Bucket .

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.