GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Preface 🢒 Cautions and Notices 🢒 Ignition Lock Cylinder 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. Position the steering wheel half way between the upper and lower tilt stops.
  3. Remove the steering wheel. Refer to Steering Wheel Replacement .
  4. Roll back the shift lever seal from the upper and the lower shrouds.
  5. Remove the tilt wheel lever. Refer to Tilt Lever Replacement .
  6. Remove the steering column trim covers. Refer to Steering Column Trim Covers Replacement .
  7. Lift the upper steering column shroud to gain access to the lock cylinder access hole.

    8. Object Number: 375310 Size: SH
  8. Using a bent tip awl, insert the tip into the ignition lock cylinder access hole.

    9. Object Number: 375316 Size: SH
  9. Turn the ignition lock cylinder to the START position. Using the bent tip awl, push down on the ignition lock cylinder retaining pin.
  10. Release the ignition lock cylinder to the RUN position.

    11. Object Number: 375305 Size: SH
  11. Remove the ignition lock cylinder from the ignition lock cylinder case assembly by pulling the ignition lock cylinder away from the steering column.

Installation Procedure

    Object Number: 375309 Size: SH
  1. Insert the ignition lock cylinder through the upper shroud.
  2. Install the ignition lock cylinder to the ignition lock cylinder case assembly by doing the following procedures:
    3. 2.1. Align the positioning slot and locking tab slot on the ignition lock cylinder case assembly to the positioning tab and locking tab on the ignition lock cylinder.
    2.2. Push the ignition lock cylinder into the ignition lock cylinder case assembly until the locking tab locks against the locking tab.
  3. Install the steering column trim covers. Refer to Steering Column Trim Covers Replacement .
  4. Install the shift lever seal to the upper and the lower shrouds.
  5. Install the steering wheel. Refer to Steering Wheel Replacement .
  6. Install the tilt wheel lever. Refer to Tilt Lever Replacement .
  7. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.