GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Century 🢒 Body and Accessories 🢒 Instrument Panel, Gages, and Console 🢒 Ignition Switch Replacement - On Vehicle

Removal Procedure
  1. Disconnect the negative battery cable from the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Disable the SIR system. Refer to Disabling the SIR System in SIR.
  3. Remove the inflatable restraint steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.
  4. Remove the steering wheel. Refer to Steering Wheel Replacement .
  5. Remove the upper and lower steering column trim covers. Refer to Steering Column Trim Covers Replacement - On Vehicle .

    6. Object Number: 322946 Size: SH
  6. Remove the wire harness straps (2) from the steering column and the wire harness assembly (1).

    7. Object Number: 306234 Size: SH
  7. Slide the connectors (2) of the turn signal and multifunction switch assembly out of the bulkhead connector (1).
  8. Remove the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .

    9. Object Number: 324869 Size: SH
  9. If the vehicle is equipped with a theft deterrent module (2), remove the theft deterrent module (2) from the lock module assembly.

    10. Object Number: 306267 Size: SH
  10. Remove the key alarm connector (1) from the lock module assembly (2).
    11. 10.1. Rotate the key alarm connector (1) 90 degrees.
    10.2. Pull the key alarm connector (1) out of the lock module assembly (2).

    Object Number: 306272 Size: SH
  11. Remove the tapping screws (2) from the ignition and key alarm switch assembly (1).
  12. Remove the ignition and key alarm switch assembly (1) from the lock module assembly.

Installation Procedure

    Object Number: 306272 Size: SH
  1. Install the ignition and key alarm switch assembly (1) onto the lock module assembly.

    2. 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.

  2. Screw the tapping screws (2) into the ignition and key alarm switch assembly (1).

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


    Object Number: 306267 Size: SH
  3. Install the key alarm connector (1) into the lock module assembly (2).
    4. 3.1. Push the key alarm connector (1) into the lock module assembly (2).
    3.2. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.

    Object Number: 324869 Size: SH
  4. If the vehicle is equipped with a theft deterrent module (2), install the theft deterrent module (2) into the lock module assembly.
  5. Install the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .

    6. Object Number: 306234 Size: SH
  6. Slide the (2) connectors of the turn signal and multifunction switch assembly into the bulkhead connector (1).

    7. Object Number: 322946 Size: SH
  7. Attach the wire harness straps (1) to the wire harness assembly (2) and the steering column.
  8. Install the upper and lower steering column trim covers. Refer to Steering Column Trim Covers Replacement - On Vehicle .
  9. Install the steering wheel. Refer to Steering Wheel Replacement .
  10. Install the inflatable restraint steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.
  11. Enable the SIR system. Refer to Enabling the SIR System in SIR.
  12. Connect the negative battery cable to the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.