GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 Eldorado 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Steering Wheel Inflatable Restraint Module Replacement

Removal Procedure

Caution: When you are carrying an undeployed inflator module:

   • Do not carry the inflator module by the wires or connector on the inflator module
   • Make sure the bag opening points away from you
When you are storing an undeployed inflator module, make sure the bag opening points away from the surface on which the inflator module rests. When you are storing a steering column, do not rest the column with the bag opening facing down and the column vertical. Provide free space for the air bag to expand in case of an accidental deployment. Otherwise, personal injury may result.


    Object Number: 591334 Size: MH

    Important: In the event deployment occurs, inspect the coil assembly wire for any signs of the following conditions due to excessive heat:

       • Scorching
       • Melting
       • Other damage
    Replace the coil assembly if damage is evident.

  1. Turn OFF the ignition.
  2. Disable the SIR system. Refer to Disabling the SIR System .
  3. Loosen the 4 screws from the back of the steering wheel until the screws are disengaged from the inflator module (4).
  4. Remove the inflatable restraint steering wheel module (4) from the steering wheel (2).
  5. Slightly push and twist the horn contact counterclockwise in order to remove the horn contact (5).
  6. Remove the connector position assurance (CPA) (7) and driver inflator module electrical connector (1).
  7. Remove the driver inflator module (4).
  8. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to Inflator Module Handling and Scrapping .

Installation Procedure

    Object Number: 591334 Size: MH
  1. Install the horn contact (5) to the steering wheel (2).
  2. Install the horn ground wire to the steering wheel.
  3. Install the coil assembly connector (1) to the inflator module (4) then install the CPA (7).

    4. Notice: Note the correct routing of the electrical wiring. Failure to reinstall the wiring properly could result in damage to the wiring.

  4. Align the steering wheel module (4) to the steering wheel (2).

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the 4 screws to the inflator module (4).

    6. Tighten
    Tighten the bolts to 3 N·m (27 lb in).

  6. Enable the SIR system. Refer to Enabling the SIR System .