GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Uplander Ext. 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 Ignition Lock Cylinder Replacement

Removal Procedure
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

    2. Caution: Refer to SIR Caution in the Preface section.

  2. Disable the SIR system. Refer to SIR Disabling and Enabling .
  3. Remove the steering wheel. Refer to Steering Wheel Replacement .

    4. Object Number: 777650 Size: SH
  4. Remove the retaining screw from the lower steering column trim covers.
  5. Tilt the trim cover down and slide rearward in order to disengage the locking tabs. Remove the lower steering column trim covers.
  6. Remove the retaining screws from the upper steering column trim cover.

    7. Object Number: 850886 Size: SH
  7. Lift the trim cover in order to gain access to the lock cylinder access hole (1).

    8. Object Number: 850894 Size: SH
  8. Insert the Snap-On A173A bent-tip awl (1) or equivalent, with a 2.5 mm (3/32 in) tip, and 20 mm (3/4 in) in length, into the access hole of the ignition lock cylinder.
  9. Turn the ignition lock cylinder to START.
  10. Use the bent tip in order to push down on the ignition lock cylinder retainer.
  11. Release the ignition lock cylinder to the RUN position.

    12. Object Number: 375305 Size: SH
  12. Remove the ignition lock cylinder from the lock cylinder case.

Installation Procedure
  1. Insert the ignition lock cylinder through the trim cover in the upper steering column.
  2. Align the lock cylinder retaining tab and the position tab with the slots in the lock housing.

    3. Object Number: 375309 Size: SH
  3. Completely push the lock cylinder into the lock housing.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the retaining screws to the upper steering trim cover.

    5. Tighten
    Tighten the screws to 3.5 N·m (31 lb in).

  5. Match the tab slots on the lower trim cover with the locking tabs on the upper trim cover.
  6. Tilt the lower trim cover up and slide the lower trim cover until the locking tabs snap into the tab slots.
  7. Install the lower trim cover screws to the steering column.

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


    Object Number: 777650 Size: SH
  8. Install the steering wheel. Refer to Steering Wheel Replacement .
  9. Enable the SIR system. Refer to SIR Disabling and Enabling .
  10. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .