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Installation Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the tilt head housing onto the steering shaft.
    Fig 1: Installing Tilt Head Housing Onto Steering Shaft
    G01419221Courtesy of GENERAL MOTORS CORP.
  2. Install the steering shaft and tilt head housing as an assembly. Refer to STEERING SHAFT, LOWER BEARING, AND JACKET REPLACEMENT (TELESCOPING)  or STEERING SHAFT, LOWER BEARING, AND JACKET REPLACEMENT (MANUAL)  .

    Important:  The switch mounting bracket must be pressed firmly against the steering column tilt head in order for the screws from the turn signal and multifunction switch assembly screws to line up.

  3. Slide the turn signal switch bracket onto the steering column.
    CAUTION: Refer to SIR INFLATOR MODULE COIL CAUTION .
  4. Slide the windshield wiper and washer switch assembly into the signal switch housing. Refer to WIPERS/WASHER SWITCH REPLACEMENT in Wipers/Washers.
  5. Install the turn signal and multifunction switch assembly only. Refer to MULTIFUNCTION, TURN SIGNAL SWITCH REPLACEMENT  .
  6. Lubricate the inner race (1) with GM P/M 12345819 (Canadian P/N 10953516).
  7. Install the inner race (1) onto the steering shaft assembly.
  8. Install the upper bearing inner race seat (2) onto the steering shaft assembly.
  9. Install the upper bearing spring (3) onto the steering shaft assembly.
  10. Lubricate the lower brass surface of the turn signal cancel cam assembly (4) with GM P/N 12377900 (Canadian P/N 10953529).
  11. Install the turn signal cancel cam assembly (4) onto the steering shaft assembly.
  12. Install the cam orientation plate (5) onto the steering shaft assembly.
    Fig 2: Locating Steering Shaft Assembly Components
    G01419222Courtesy of GENERAL MOTORS CORP.
  13. Compress the cam orientation plate using J 23653-SIR  and J 42137. 
    Fig 3: Installing Bearing Retainer
    G01419223Courtesy of GENERAL MOTORS CORP.
  14. Firmly seat the new bearing retainer into the groove on the steering shaft assembly.
  15. Remove J 23653-SIR  and J 42137. 
  16. Install the wave washer (1) to the steering shaft assembly (2).
    Fig 4: Installing Wave Washer To Steering Shaft Assembly
    G01419224Courtesy of GENERAL MOTORS CORP.
  17. Install the SIR coil. Refer to SIR COIL ASSEMBLY .
  18. Enable the SIR system. Refer to DISABLING & ACTIVATING AIR BAG SYSTEM .
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