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: 415293  Size: SH
  1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  2. Remove the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  3. Important: The abrasion sleeve located on the steering column wire harness assembly must be reinstalled. Make note of what connector is coming out of the abrasion sleeve for installation purposes.

  4. Remove the wire harness strap (2) from the steering column and the wire harness assembly (1).

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

  7. Object Number: 306267  Size: SH
  8. Rotate the key alarm connector (1) 90 degrees.
  9. Pull the key alarm connector (1) out of the ignition lock cylinder case (2).
  10. Remove the passkey connector from the ignition lock cylinder case (2).

  11. Object Number: 415849  Size: SH
  12. Insert J-42759 into the ignition lock cylinder case (1) and slide the ignition switch (2) out.

Installation Procedure


    Object Number: 894421  Size: SH

    Important: Before installing a new ignition switch, the lock cylinder gear has to be rotated counterclockwise until it hits the stop. Counterclockwise from the drivers perspective. In order to rotate the lock cylinder all the way, the key and lock cylinder need to be removed. Once the key and lock cylinder are removed, rotate counterclockwise with a screw driver.

  1. Install the ignition lock cylinder case (1) and slide the ignition switch (2) in.

  2. Object Number: 306267  Size: SH
  3. Push the key alarm connector (1) into the ignition lock cylinder case (2).
  4. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.
  5. Install the passkey connector into the ignition lock cylinder case (2).

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

  8. Object Number: 415293  Size: SH

    Important: The abrasion sleeve must be installed back onto the steering column wire harness assembly. The ignition lock cylinder case wires and connector must be hanging out of the middle of the abrasion sleeve.

  9. Attach the wire harness strap (2) to the wire harness assembly (1) and the steering column.
  10. Install the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  11. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.