GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 LaCrosse 🢒 Body 🢒 Wiring Systems 🢒 Ignition and Start Switch Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

  1. Disable the SIR system SIR Disabling and Enabling in SIR.
  2. Remove the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  3. Remove the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement .

    4. Object Number: 420192 Size: SH
  4. Disconnect the theft deterrent control module connector.
  5. Disconnect the fused jumper assembly connector.

    6. Object Number: 324869 Size: SH
  6. Slide the theft deterrent control module (2) from the ignition lock cylinder case (1).

    7. Object Number: 324871 Size: SH
  7. Remove the key alarm connector (1) from the ignition lock cylinder case (4).
  8. Remove the 2 tapping screws (3) from the ignition switch assembly (2).

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 324871 Size: SH
  1. Install the ignition switch assembly (2) and secure by using 2 tapping screws (3).

    2. Tighten
    Tighten the screws to 7 N·m (62 lb in).

  2. Install the ignition switch assembly connector (1) onto the ignition lock cylinder case (4).

    3. Object Number: 420192 Size: SH
  3. Connect the theft deterrent control module connector.
  4. Connect the fused jumper assembly connector.

    5. Object Number: 324869 Size: SH
  5. Install the theft deterrent control module (2) onto the ignition lock cylinder case (1).
  6. Install the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement .
  7. Install the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  8. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.