LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2010 >> H3 Alpha >> Repair and Diagnosis >> External Pages >> Different car >> Section 764 (Supplemental Inflatable Restraint System) >> Repair Instructions >> Inflatable Restraint Steering Wheel Module Coil Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Block Tooth Of Steering Shaft Assembly In 12 O'clock Position
    GM293254Courtesy of GENERAL MOTORS CORP.
    NOTE: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.
    NOTE: The wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or intermediate shaft from the steering gear. Failure to do so will cause the SIR coil assembly to become uncentered, which may cause damage to the coil assembly.
  1. Verify the following:
    • The wheels on the vehicle are straight ahead.
    • That J 42640  is installed or the ignition switch is in the LOCK position. See Special Tools .
    2. Fig 2: View Of SIR Coil
    GM396373Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not remove the centering tab from the new SIR coil until the installation is complete. If the SIR coil does not come with a centering tab, you must center the SIR coil.
  2. If reusing the existing coil it MUST be centered, refer to Inflatable Restraint Steering Wheel Module Coil Centering .
    3. Fig 3: Aligning SIR Coil Assembly With Horn Tower
    GM312359Courtesy of GENERAL MOTORS CORP.
  3. Align the SIR coil assembly (1) with the horn tower on the turn signal cancel cam assembly (2).
    4. Fig 4: Identifying SIR Coil, Steering Shaft Assembly & Retaining Ring
    GM322951Courtesy of GENERAL MOTORS CORP.
  4. Slide the SIR coil (4) onto the steering shaft assembly (2).
  5. Firmly seat the retaining ring (3) into the groove on the steering shaft assembly (2).
  6. Remove and discard the centering tab from the new SIR coil (4).
  7. Install the steering column trim covers. Refer to Steering Column Trim Covers Replacement .
    8. Fig 5: View Of Steering Wheel, Shaft & Nut
    GM294367Courtesy of GENERAL MOTORS CORP.
  8. Install the steering wheel. Refer to Steering Wheel Replacement .
  9. Enable the SIR system. Refer to SIR Disabling and Enabling .
scientia non olet · About LEMON Manuals