GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Express - AWD 🢒 Preface 🢒 Cautions and Notices 🢒 Turn Signal Cancel Cam and Upper Bearing Thrust Washer

Tools Required

    • J 23653-SIR Steering Column Lock Plate Compressor
    • J 42137 Cam Orientation Plate Adapter

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 338052 Size: SH
  1. Disable the SIR system. Refer to SIR Disabling and Enabling .

    2. Important: Let the SIR coil hang freely after removal.

  2. Remove the SIR coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .
  3. Remove and discard the bearing retainer using J 23653-SIR and J 42137 .

    4. Object Number: 664282 Size: SH
  4. If standard column, remove the following parts from the steering shaft assembly:
    5. 4.1. The cam orientation plate (4)
    4.2. The turn signal cancel cam assembly (3)
    4.3. The upper bearing spring (2)
    4.4. The thrust washer (1)

    Object Number: 664265 Size: SH
  5. If tilt column, remove the following parts from the steering column shaft assembly:
    6. 5.1. The cam orientation plate (5)
    5.2. The turn signal cancel cam assembly (4)
    5.3. The upper bearing spring (3)
    5.4. The upper bearing inner race seat (2)
    5.5. The inner race (1)

Installation Procedure

    Object Number: 664283 Size: SH
  1. If standard column, install the following parts onto the steering shaft assembly:
    2. 1.1. The thrust washer (1)
    1.2. The upper bearing spring (2)
    1.3. Lubricate the turn signal cancel cam assembly (3) with GM P/N 12377900 (Canadian P/N 10953529).
    1.4. The turn signal cancel cam assembly (3) onto the steering shaft assembly
    1.5. The cam orientation plate (4) onto the steering shaft assembly

    Object Number: 664266 Size: SH
  2. If tilt column, install the following parts onto the steering column shaft assembly:
    3. 2.1. Lubricate the inner race (1) with GM P/N 12345718 (Canadian P/N 10953516).
    2.2. The inner race (1)
    2.3. The upper bearing inner race seat (2)
    2.4. The upper bearing spring (3)
    2.5. Lubricate the turn signal cancel cam assembly (4) with GM P/N 12377900 (Canadian P/N 10953529).
    2.6. The turn signal cancel cam assembly (4) onto the steering shaft assembly
    2.7. The cam orientation plate (5)

    Object Number: 338052 Size: SH
  3. Install the new bearing retainer onto the steering shaft assembly.
  4. Compress the cam orientation plate using J 23653-SIR and J 42137 .
  5. Firmly seat the bearing retainer into the groove on the steering shaft assembly.
  6. Remove J 23653-SIR .
  7. Install the SIR coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .
  8. Enable the SIR system. Refer to SIR Disabling and Enabling .