GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Preface 🢒 Cautions and Notices 🢒 Ignition Lock Cylinder Case Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  2. Remove the steering wheel. Refer to Steering Wheel Replacement .
  3. Remove the shift lever. Refer to Shift Lever Replacement .
  4. Remove the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement .
  5. If tilt column, remove the steering column tilt head components. Refer to Turn Signal Cancel Cam and Upper Bearing Inner Race Replacement .
  6. If standard column, remove the steering column components. Refer to Turn Signal Cancel Cam and Upper Bearing Thrust Washer .

    7. Object Number: 324874 Size: SH
  7. If necessary, remove the park lock cable assembly (1) from the ignition lock cylinder case assembly.
    8. 7.1. Place the lock cylinder in the OFF-LOCK position.
    7.2. Place the shift lever into the PARK position.
    7.3. Insert a small screwdriver into the slot on the ignition lock cylinder case assembly. Push against the locking tab on the end of the park lock cable assembly (1).
    7.4. Disconnect the park lock cable assembly (1) from the ignition lock cylinder case assembly.

    Object Number: 324882 Size: SH
  8. Rotate the key alarm connector (1) 90 degrees.
  9. Pull the key alarm connector (1) out of the ignition lock cylinder case assembly (2).
  10. Remove the 2 tapping screws from the ignition switch (3).
  11. Remove the ignition switch (3) from the ignition lock cylinder case assembly (2).
  12. Let the ignition switch (3) hang freely.

    13. Object Number: 306295 Size: SH
  13. Remove the 3 pan head tapping screws (2) from the ignition lock cylinder case assembly (1).
  14. Remove the ignition lock cylinder case assembly (1) from the steering column tilt head assembly.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 306295 Size: SH
  1. Install the ignition lock cylinder case assembly (1) onto the steering column tilt head assembly.
  2. Screw the 3 pan head tapping screws (2) into the ignition lock cylinder case assembly.

    3. Tighten
    Tighten the screws to 7 N·m (62 lb in).


    Object Number: 324882 Size: SH
  3. Install the ignition switch assembly (1) onto the ignition lock cylinder case assembly (2).
  4. Screw the 2 tapping screws into the ignition switch (1).

    5. Tighten
    Tighten the tapping screws to 1.5 N·m (13 lb in).

  5. Install the key alarm connector (3) onto the ignition lock cylinder case assembly (2) by doing the following:
    6. 4.1. Push the key alarm connector (1) into the ignition lock cylinder case assembly (2).
    4.2. Rotate the key alarm connector 90 degrees so that the key alarm connector locks into place.

    Object Number: 324874 Size: SH

    Caution: Improper routing of the wire harness assembly may damage the inflatable restraint steering wheel module coil. This may result in a malfunction of the coil, which may cause personal injury.

  6. If necessary, connect the park lock cable assembly (1):
    7. 5.1. Place the lock cylinder in the ACCESSORY position.
    5.2. Place the gear shift lever into the PARK position.
    5.3. Press the locking tab on the end of the park lock cable assembly (1) into the slot in the ignition lock cylinder case assembly.
  7. If standard column, install the steering column components. Refer to Turn Signal Cancel Cam and Upper Bearing Thrust Washer .
  8. If tilt column, install the steering column tilt head components. Refer to Turn Signal Cancel Cam and Upper Bearing Inner Race Replacement .
  9. Install the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement .
  10. Install the shift lever. Refer to Shift Lever Replacement .
  11. Install the steering wheel. Refer to Steering Wheel Replacement .
  12. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.