GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: The passlock sensor is part of the ignition module.

  1. Disable the SIR system. Refer to Disabling the SIR System in SIR.

  2. Object Number: 862575  Size: SH
  3. Remove the lock cylinder bezel from the steering column shroud by carefully prying with a thin bladed screwdriver.

  4. Object Number: 870643  Size: SH
  5. Remove the steering column upper shroud panel.
  6. Insert the key into the ignition lock cylinder and rotate it to the START position. Then, rotate the cylinder back to the RUN position.

  7. Object Number: 892474  Size: SH
  8. Depress the locking button on the top of the ignition module assembly with a thin pic-type tool. Slide the lock cylinder assembly from the ignition module.

  9. Object Number: 870643  Size: SH
  10. Remove the shroud fasteners and remove the steering column lower shroud panel.

  11. Object Number: 881945  Size: SH
  12. Disconnect the ignition switch connector and remove the ignition switch from the ignition module.

  13. Object Number: 891587  Size: SH
  14. Remove the park lock solenoid.

  15. Object Number: 891750  Size: SH
  16. Remove the turn signal/headlamp lever, the windshield washer lever, and the passlock sensor connector.

  17. Object Number: 891598  Size: SH
  18. Remove the ignition module shear bolts.

  19. Object Number: 854925  Size: SH
  20. Use a light hammer and a chisel to bite into the shear bolt head at a position offset from its center.
  21. Tap the chisel to rotate the bolt and loosen it.
  22. Repeat until the bolt is loose enough to remove.

  23. Object Number: 891608  Size: SH
  24. Remove the ignition module assembly from the steering column.

Installation Procedure


    Object Number: 891750  Size: SH
  1. Use the new shear bolts to install the ignition module assembly on the steering column. Tighten the shear bolts until the heads break off.
  2. Install the turn signal/headlamp lever, the windshield washer lever, and the passlock sensor connector.

  3. Object Number: 891587  Size: SH
  4. Install the park lock solenoid.
  5. Tighten
    Tighten the park lock solenoid screws to 1.5 N·m (14 lb in).


    Object Number: 881945  Size: SH
  6. Install the ignition switch and reconnect the ignition switch connector.
  7. Tighten
    Tighten the ignition switch fasteners to 1.5 N·m (13 lb in).


    Object Number: 870643  Size: SH
  8. Install the shroud fasteners and the steering column lower shroud panel.
  9. Tighten
    Tighten the steering wheel shroud fasteners to 3 N·m(27 lb in).


    Object Number: 877940  Size: SH

    Important: The actuator blade within the ignition module housing must be in the RUN position to install the lock cylinder assembly. If rotated, replace it to the RUN position using needle nose pliers.

  10. Insert the key into the ignition lock cylinder and install into the ignition module.

  11. Object Number: 862575  Size: SH
  12. Install the steering column upper shroud panel.
  13. Install the lock cylinder bezel.
  14. Enable the SIR system. Refer to Enabling the SIR System in SIR.