GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    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.

  1. Disconnect the negative battery cable.
  2. Disable the SIR system. Refer to Disabling the SIR System in SIR
  3. With a small flat-bladed tool remove the trim ring from the ignition switch.
  4. Remove the accessory trim plate from the I/P carrier. Refer to Instrument Panel Accessory Trim Plate Replacement .
  5. Remove the upper trim cover from the steering column. Refer to Steering Column Trim Covers Replacement - On Vehicle in Steering Wheel and Column.
  6. Remove the instrument cluster trim plate from the I/P carrier. Refer to Instrument Cluster Trim Panel Replacement .
  7. Remove the I/P cluster from the I/P carrier. Refer to Instrument Cluster Replacement .

  8. Object Number: 743404  Size: SH
  9. Remove the bolts from the ignition switch.

  10. Object Number: 749168  Size: SH
  11. Disconnect the electrical connectors from the ignition switch.
  12. Insert the key into the ignition switch lock cylinder. Rotate the key to the ON position.

  13. Object Number: 762724  Size: SH
  14. Perform the following procedure if the ignition switch lock cylinder is seized or will not rotate.
  15. 11.1. Protect the immediate work area with suitable material such as clean shop towels or a clean fender cover.
    11.2. Locate the surface for the lock cylinder release button (2) on the plastic ignition switch housing. Center punch a location on the rib (1) approximately 3/8 inch rearward toward the key entry end from the cylinder release button.
    11.3. Carefully drill a pilot hole through the plastic housing with a 1/8-inch drill bit.
    11.4. Using a 9/32-inch drill bit, carefully drill a larger hole at the pilot location, and slightly into the surface of the ignition switch lock cylinder to break the release button retaining spring .
    11.5. Remove portions of the broken spring from the hole using a small suitable tool.
    11.6. Grasp the ignition switch lock cylinder and remove the cylinder from the switch housing.
    11.7. Remove any plastic flashing from the drilling operation. Use compressed air to blow out the ignition switch assembly.
    11.8. Follow service manual procedures when cylinder recoding is required. Refer to Key and Lock Cylinder Coding in General Information.

    Object Number: 749169  Size: SH
  16. Depress and release the transaxle park/lock cable retainer. Pull to remove the park/lock cable from the ignition switch.

  17. Object Number: 749171  Size: SH
  18. Press the release plunger on the ignition switch lock cylinder. The release plunger is located at the four o'clock position on the ignition switch housing.
  19. Use the key in order to pull the lock cylinder from the ignition switch housing.

  20. Object Number: 743413  Size: SH
  21. Disconnect the pass key electrical connector from the ignition switch housing.
  22. Remove the ignition switch from the vehicle.

Installation Procedure


    Object Number: 743413  Size: SH

    Important: If you replace the ignition lock cylinder, you must code the new cylinder. Refer to Key and Lock Cylinder Coding in General Information.

  1. Install the ignition switch to the vehicle.
  2. Connect the pass key electrical connector to the ignition switch housing.

  3. Object Number: 749174  Size: SH
  4. Use the key in order to install the lock cylinder to the ignition switch housing.
  5. Perform the following procedure if you are installing a new ignition switch lock cylinder:
  6. 4.1. Install the new ignition switch lock cylinder as required by rotating both the cylinder and the ignition switch to the ON position.
    4.2. Push the lock cylinder into the ignition switch housing until fully seated.
    4.3. It may be necessary to slightly depress the release button as the cylinder passes by the 9/32-inch hole previously drilled in the ignition switch housing.

    Object Number: 749172  Size: SH
  7. Connect the park lock cable to the ignition switch housing.
  8. Connect the electrical connectors to the ignition switch.

  9. Object Number: 743404  Size: SH
  10. Install the ignition switch housing to the I/P carrier.
  11. 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.

  12. Install the ignition switch bolts.
  13. Tighten
    Tighten the bolts to 10 N·m (88 lb in).

  14. Install the I/P cluster to the IP carrier. Refer to Instrument Cluster Replacement .
  15. Install the I/P cluster trim plate to the IP carrier. Refer to Instrument Cluster Trim Panel Replacement .
  16. Install the upper trim cover to the steering column. Refer to Steering Column Trim Covers Replacement - On Vehicle in Steering Wheel and Column.
  17. Install the accessory trim plate to the I/P carrier. Refer to Instrument Panel Accessory Trim Plate Replacement .
  18. Install the trim ring to the ignition switch.
  19. Enable the SIR system. Refer to Enabling the SIR System in SIR
  20. Connect the negative battery cable.
  21. Perform the Passlock learn procedure. Refer to Theft Systems Description and Operation in Theft Deterrent.