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 1544 (POWER SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT ADJUSTER MECHANISM REPLACEMENT - POWERINSTALLATION 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 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.

Install the seat back. Refer to Seat Back Replacement - Front .
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the 4 nuts that secure the seat pan to the power seat adjuster frame.
Tighten: Tighten the nuts to 25 N.m (18 lb ft).

Fig 1: View Of Underside Of Seat Adjuster Frame & Mounting Nuts
Courtesy of GENERAL MOTORS CORP.
Install the SIR harness (2) to the seat clips (1,4).

Fig 2: Identifying Connectors & Harness
Courtesy of GENERAL MOTORS CORP.
Connect the gray lumbar electrical connector (5), if equipped.
Connect the black electrical connector (3) to the seat belt buckle.
Connect the black electrical connector (6) to the seat back harness.
Install the seat belt buckle to the seat with the nut.
Tighten: Tighten the nut to 55 N.m (41 lb ft).

Fig 3: Locating Seat Belt Buckle Nut
Courtesy of GENERAL MOTORS CORP.
Install the seat cushion trim panel. Refer to Seat Cushion Outer Trim Panel Replacement .
Install the front bucket seat assembly to the vehicle. Refer to Seat Replacement - Front Bucket .
If the vehicle is equipped with memory seats, calibrate the seat. Refer to Memory Seat Calibration Procedure .

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.