GM Service Manual Online
For 1990-2009 cars only

Tools Required

J-42759 Ignition Switch Connector Release Tool

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 306267  Size: SH
  1. Disable the SIR system.
  2. Remove the theft deterrent control module. Refer to Theft Deterrent Module Replacement in Theft Deterrent.
  3. Rotate the key alarm connector (1) 90 degrees.
  4. Gently pull the key alarm connector (1) out of the ignition lock cylinder case assembly (2).

  5. Object Number: 664261  Size: SH
  6. Disconnect the connector from the ignition switch assembly.
  7. Remove the wires encased in the ignition switch clip (located on the side of the ignition switch).
  8. Remove the ignition switch assembly (2) using J-42759 .

Installation Procedure


    Object Number: 664261  Size: SH
  1. Insert J-42759 into the ignition lock cylinder case assembly (1) and slide the ignition switch assembly (2) in.
  2. Connect the connector to the ignition switch assembly (2).

  3. Object Number: 306267  Size: SH

    Caution: Improper routing of the wire harness assembly may damage the inflatable restraint steering wheel module coil. This may result in a malfunction of the coil, which may cause personal injury.

  4. Push the key alarm connector (1) into the ignition lock cylinder case assembly (2).
  5. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.
  6. Install the wires back into the ignition switch clip.
  7. Install the theft deterrent control module. Refer to Theft Deterrent Module Replacement in Theft Deterrent.
  8. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.