GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Epica 🢒 Preface 🢒 Cautions and Notices 🢒 Steering Wheel Inflatable Restraint Module Coil Replacement

Removal Procedure

    Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section.

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1256489 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the driver air bag module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
  3. Remove the steering wheel. Refer to Steering Wheel Replacement in Steering Wheel and Column.
  4. Remove the screws from the upper and lower steering column covers, and remove the covers.
  5. Remove the driver side knee bolster and instrument panel lower cover.
  6. Disconnect the driver air bag, horn, and connectors from the lower steering column.
  7. Remove the screws and discard them.

    8. Object Number: 1256491 Size: SH
  8. Remove the clock spring from the steering shaft.

Installation Procedure

    Object Number: 1256492 Size: SH

    Caution: When servicing the steering column, the Supplemental Inflatable Restraint (SIR) System clock spring must be centered for proper steering wheel operation. Failure to properly center the SIR clock spring may result in reduced turnability of the steering wheel causing the vehicle to improperly maneuver and may cause the SIR system to be inoperative.

    Notice: Do not rotate the steering wheel or move the position of the steering gear once the intermediate shaft is disconnected. This will uncenter the Inflatable Restraint coil in the steering column. If the Inflatable Restraint coil becomes uncentered, it may be damaged during vehicle operation.

  1. Turn the front wheels straight ahead.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the clock spring with the screws.

    3. Tighten
    Tighten the clock spring mounting screws to 3 N·m (27 lb in).

  3. Turn the lobe of the clock spring clockwise to lock. Do not force.
  4. Turn the lobe of the clock spring counterclockwise approximately 3 turns to the neutral position, with the front of the wheels straight ahead.
  5. Properly align the pointed marks on the components of the clock spring.
  6. Connect the connectors on the lower steering column.
  7. Install the driver side knee bolster and instrument panel lower cover.
  8. Install the steering wheel.
  9. Install the driver air bag module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
  10. Connect the negative battery cable.