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 1320 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)REPAIR INSTRUCTIONSINFLATABLE RESTRAINT SIDE IMPACT SENSOR REPLACEMENTREMOVAL 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 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Disable the SIR system. Refer to SIR Disabling and Enabling Zones .
Remove the front door sill plate. Refer to Door Sill Plate Replacement in Interior Trim.
Remove the rear door sill plate. Refer to Door Sill Plate Replacement in Interior Trim.
Remove the center pillar lower trim panel. Refer to Trim Panel Replacement - Lower Center Pillar in Interior Trim.
Remove the front seat belt retractor. Refer to Seat Belt Retractor Replacement - Left Front or Seat Belt Retractor Replacement - Right Front in Seat Belts.
Remove the side impact sensor electrical connector.

Fig 1: Side Impact Sensor And Fasteners

Courtesy of GENERAL MOTORS CORP.

Remove the side impact sensor fasteners (2).
Remove the side impact sensor (1).

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.