GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 Century 🢒 Body 🢒 Lighting Systems 🢒 Turn Signal Multifunction Switch Replacement

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.
  2. Remove the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  3. Remove the knee bolster. Refer to Knee Bolster Replacement.

    4. 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 assembly (1) from the wire harness strap (2).
  5. Disconnect the turn signal and multifunction switch assembly connector from the SIR system coil connector.

    6. 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: 664256 Size: SH
  7. Remove the 2 pan head tapping screws (1) and (3) from the turn signal and multifunction switch assembly (2).
  8. Remove the turn signal and multifunction switch assembly (2) from the steering column tilt head assembly.

Installation Procedure

    Object Number: 664256 Size: SH
  1. Install the turn signal and multifunction switch assembly (2) onto the steering column tilt head assembly.

    2. Notice: Refer to Fastener Notice in the Preface section.

    Important: Be sure that the electrical contact of the turn signal and multifunction switch assembly (2) rests on the turn signal cancel cam assembly.

  2. Screw the 2 pan head tapping screws (1) and (3) into the turn signal and multifunction assembly (2).

    3. Tighten

        • Tighten the top pan head tapping screw (1) to 3 N·m (27 lb in).
        • Tighten the side pan head tapping screw (3) to 7 N·m (62 lb in).

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

    4. Object Number: 415293 Size: SH
  4. Connect the turn signal and multifunction switch assembly connector to the SIR coil connector.

    5. 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.

  5. Install the wire harness assembly (1) into the wire harness strap (2).
  6. Install the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .
  7. Install the knee bolster. Refer to Knee Bolster Replacement.
  8. Enable the SIR system. Refer to SIR Disabling and Enabling.