GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The wire routing for the components inside the steering column is critical. When servicing the ignition lock cylinder, maintain proper wire routing.

It is not necessary to match the replacement Key module to the ignition key. All replacement modules automatically learn the ignition key transponder value of the first ignition key used to start the vehicle. The ignition key transponder value is learned permanently, so caution should be used to ensure that unwanted ignition key transponder values are not learned.

  1. Remove the steering column lock cylinder set. Refer to Ignition Lock Cylinder Replacement - On Vehicle in Steering Wheel and Column-Tilt.
  2. Remove the upper and lower shrouds. Refer to Steering Column Trim Covers - Disassemble - Off Vehicle in Steering Wheel and Column-Tilt.

  3. Object Number: 420192  Size: SH
  4. Disconnect the coded key controller connector.

  5. Object Number: 324869  Size: SH
  6. Slide the control coded key (2) from the lock module assembly (1).

  7. Object Number: 324871  Size: SH
  8. Disconnect the connector from the bottom of the ignition and key alarm switch assembly.
  9. Remove the lead inside the clip on the side of the ignition and key alarm switch assembly.
  10. Remove the connector (1) from the lock module assembly (4).
  11. Remove the 2 tapping screws (3) from the ignition and key alarm switch assembly (2).

Installation Procedure


    Object Number: 324871  Size: SH

    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.

  1. Install the ignition and key alarm switch assembly (2) and secure by using 2 tapping screws (3).
  2. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  3. Install the ignition and key alarm connector (1) onto the lock module assembly (4).
  4. Install the green connector into the bottom of the ignition and key alarm switch assembly (2).
  5. Put the lead in the clip located on the side of the ignition and key alarm switch assembly (2).

  6. Object Number: 324869  Size: SH
  7. Install the control coded key (2) onto the lock module assembly (1).

  8. Object Number: 420192  Size: SH
  9. Connect the coded key controller.
  10. Install the upper and lower shrouds. Refer to Steering Column Trim Covers - Assemble - Off Vehicle in Steering Wheel and Column-Tilt.
  11. Install the steering column lock cylinder set. Refer to Ignition Lock Cylinder Replacement - On Vehicle in Steering Wheel and Column-Tilt.