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 64 (SHIFT INTERLOCK SYSTEM)REMOVAL & INSTALLATIONELECTRONIC COLUMN LOCK ASSEMBLYINSTALLATION
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Electronic Column Lock Assembly: Installation
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- Install the electronic lock module (1) to the steering column housing. See Fig 6 . Install the electronic lock module (1) mounting screws (2). See Fig 5 . Install the ignition switch (2) to the electronic lock module (2). See Fig 4 . Install the ignition lock cylinder.
- Connect the passlock electrical connector from the lock module. Rotate the key alarm switch connector to the electronic lock module. Install park lock cable (1) to the electronic lock module. See Fig 3 .
- Install the following components to the steering shaft: turn signal cancel cam (3) and shaft lock shield (4). See Fig 2 .
- Install the steering column lock plate compressor and cam orientation plate adapter to the steering shaft and compress the shaft lock shield (2). See Fig 1 . Install the lock shield retainer to the steering column shaft. Remove the steering column lock plate compressor and cam orientation plate adapter from the steering shaft.
- Install the SIR coil, the steering wheel and inflator module. Enable the SIR system. See AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION.
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.