GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 DeVille 🢒 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. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  2. Disconnect the ignition battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Remove the knee bolster. Refer to Driver Knee Bolster Replacement in Instrument Panel, Gages, and Console.
  4. Position the steering wheel half way between the upper and lower tilt stops.
  5. Remove the steering wheel. Refer to Steering Wheel Replacement .
  6. If equipped remove the manual tilt lever.

    7. Object Number: 588300 Size: SH
  7. Remove the retaining screws (4) from the lower steering column trim cover.
  8. Disconnect the closeout shroud from the lower trim cover.

    9. Object Number: 588304 Size: SH
  9. Remove the retaining screw (2) from the upper steering column trim cover.

    10. Object Number: 375310 Size: SH
  10. Lift the upper trim cover to gain access to the lock cylinder access hole.

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

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

Installation Procedure

    Object Number: 375309 Size: SH
  1. Install the ignition lock cylinder to the ignition lock cylinder case assembly by doing the following procedure:
    2. 1.1. Align the positioning slot and the locking tab slot on the ignition lock cylinder case assembly to the positioning tab and the locking tab on the ignition lock cylinder.
    1.2. Push the ignition lock cylinder into the ignition lock cylinder case assembly until the locking tabs lock together.

    Object Number: 588304 Size: SH
  2. Install the upper trim cover (1) to the steering column.

    3. 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.

  3. Install the retaining screw (2) to the upper steering column trim cover.

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


    Object Number: 588300 Size: SH
  4. Connect the lower trim cover (2) to the closeout shroud.
  5. Install the retaining screws (4) to the lower steering column trim cover.

    6. Tighten
    Tighten the screws to 3 N·m (27 lb in).

  6. Install the steering wheel. Refer to Steering Wheel Replacement .
  7. Install the knee bolster. Refer to Driver Knee Bolster Replacement in Instrument Panel, Gages, and Console.
  8. Connect the ignition battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  9. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.