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 DIAGNOSISSTEERINGSTEERING WHEEL & STEERING COLUMNREPAIR INSTRUCTIONSIGNITION LOCK CYLINDER REPLACEMENTINSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Installation Procedure
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
- Install the ignition lock cylinder by performing the following procedure:
- Align the positioning locking tab slot on the lock module to the positioning tab on the ignition lock cylinder.
- Push the lock cylinder in until the tab locks in the lock module.
- Install the steering column trim covers. Refer to STEERING COLUMN TRIM COVERS REPLACEMENT .
- Enable the SIR system. Refer to DISABLING & ACTIVATING AIR BAG SYSTEM in Air Bag Restraint Systems.
- Connect the battery negative cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
- Perform the Passlock learn procedure. Refer to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS in Theft Deterrent.
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.