GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1265533  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the upper and the lower steering column cover by removing the screws.
  3. On vehicles equipped with an immobilizer control unit, disconnect the electrical connector from the immobilizer control unit. Refer to Theft Deterrent Module Replacement in Theft Deterrent.

  4. Object Number: 1265537  Size: SH
  5. With the key in the ignition turned to the position designated ACC, remove the lock cylinder by pressing down the detent spring with a 2.5 mm allen wrench or other suitable tool, and pulling the lock cylinder out of the switch cylinder housing.

  6. Object Number: 1265538  Size: SH
  7. Remove the ignition switch retaining screw.
  8. Disconnect the electrical connector from the ignition switch and remove the ignition switch.

Installation Procedure


    Object Number: 1265538  Size: SH
  1. Connect the electrical connector to the ignition switch.
  2. Install the ignition switch.

  3. Object Number: 1265537  Size: SH
  4. Install the lock cylinder into the switch cylinder housing.

  5. Object Number: 1265533  Size: SH
  6. On vehicles equipped with an immobilizer control unit, connect the electrical connector to the immobilizer control unit. Refer to Theft Deterrent Module Replacement in Theft Deterrent.
  7. Install the upper and lower steering column cover.
  8. Install the upper and lower steering column cover screws.
  9. Connect the negative battery cable.