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.

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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1596 (SEAT SYSTEM)REPAIR INSTRUCTIONSLUMBAR REPLACEMENT-FRONT SEATINSTALLATION 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 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Position the power lumbar/bolster assembly on the seat.
Connect the electrical connectors to the motors.
Fasten the lumbar wire at the bottom of the frame.
Attach the lumbar clip onto the top of the seat frame.

Fig 1: Installing Lumbar Wire To Bottom Of Seat Frame
Courtesy of GENERAL MOTORS CORP.
Install the rivets to secure the bolster paddles (1).
Install the seat back cover and pad. Refer to Seat Back Cover And Pad Replacement-Front .
Install the head restraint and guides. Refer to Head Restraint Replacement .
Install the seat in the vehicle. Refer to Seat Replacement-Front Bucket .

Fig 2: Installing Rivets To Secure Bolster Paddles
Courtesy of GENERAL MOTORS CORP.

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.