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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 681 (STEERING WHEEL & STEERING COLUMN)REPAIR INSTRUCTIONSELECTRONIC COLUMN LOCK MODULE REPLACEMENT (FLOOR SHIFT)REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION: Refer to SIR CAUTION in Cautions and Notices.
  1. Disable the SIR system. Refer to DISABLING SYSTEM in SIR.
    2. IMPORTANT: Remove the SIR coil from the steering shaft and let the SIR coil hang freely.
  2. Remove the SIR coil. Refer to SIR COIL ASSEMBLY .
    3. Fig 1: View Of Bearing Retainer
    GM330127Courtesy of GENERAL MOTORS CORP.
  3. Install the J 23653-SIR to the steering shaft and compress the shaft lock shield.
  4. Remove the lock shield retainer from the steering column shaft.
  5. Remove the J 23653-SIR from the steering shaft.
    6. Fig 2: Shaft Lock Shield & Turn Signal Cancel Cam
    GM389656Courtesy of GENERAL MOTORS CORP.
  6. Remove the following parts from the steering shaft:
    1. The shaft lock shield (4)
    2. The turn signal cancel cam (3)
  7. Rotate the steering column lock cylinder to the OFF-LOCK position.
    8. Fig 3: Electric Park Lock & Connector
    GM389654Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the electric park lock (1) electrical connector (2).
    9. Fig 4: View Of Electric Park Lock & Ignition Lock Cylinder Case Assembly
    GM368489Courtesy of GENERAL MOTORS CORP.
  9. Unsnap the electric park lock (2) off of the electronic lock module (1).
    10. Fig 5: Identifying Key Alarm Connector At Ignition Lock Cylinder Case
    GM306267Courtesy of GENERAL MOTORS CORP.
  10. Rotate the key alarm switch connector from the electronic lock module.
  11. Disconnect the passlock electrical connector from the electronic lock module.
    12. Fig 6: Ignition Switch, Electronic Lock Module & J 42759
    GM664261Courtesy of GENERAL MOTORS CORP.
  12. Remove the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .
  13. Disconnect the ignition switch (2) from the electronic lock module using the J 42759  .
  14. Remove the ignition switch (2) from the electronic lock module (1).
  15. Let the ignition switch (2) hang freely.
    16. Fig 7: Electronic Lock Module & Mounting Screws
    GM306295Courtesy of GENERAL MOTORS CORP.
  16. Remove the electronic lock module (1) mounting screws (2).
  17. Remove the electronic lock module (1) from the steering column housing.
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.