GM Service Manual Online
For 1990-2009 cars only

    Object Number: 293254  Size: SH

    Notice: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.

    Important: The SIR coil and multifunction, turn signal switch are serviced as an assembly.

    Important: If double wire harness strap is installed onto the wire harness assembly and column, you must reuse the holder for the wire straps during installation.

    Remove the wire harness strap(s) where necessary.

  1. Verify the following conditions before centering the SIR coil:
  2. • The wheels on the vehicle are straight ahead.
    • The block tooth (1) of the steering shaft assembly is in the 12 o'clock position.
    • The ignition switch is in the LOCK position.

    Object Number: 1837355  Size: SH
  3. To center the coil perform the following:
  4. • Rotate the inner portion of the SIR coil clockwise till it stops.
    • Rotate the inner portion of the SIR coil counterclockwise 3 ½ turns till the indicator marks line up (2).
    • At this time the steering wheel harness (1) should be at the 12 o'clock position.
    • This indicates that the SIR coil is now centered and can be installed to the steering column.