GM Service Manual Online
For 1990-2009 cars only

Alignment Procedure


    Object Number: 868446  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.

  1. If available remove the yellow tab (2) and save for reassembly.
  2. Gently rotate the coil hub (1) clockwise until a slight tension is present.
  3. Count the number of revolutions, while gently rotating the coil hub (1) counter clockwise until a slight tension is present.
  4. Gently rotate the coil hub (1) clockwise one half of the previously counted revolutions.
  5. Rotate the coil hub as required to align the yellow tab (2).
  6. Install the yellow tab (2) into the coil hub. Use tape if the tab is unavailable.