GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1087898  Size: SH
  1. Disconnect the negative battery cable. Refer to Lifting and Jacking the Vehicle .
  2. Remove the injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  3. Disconnect the ignition coil/control module electrical connectors.
  4. Remove the spark plug wire retainer (1) from the ignition control module bracket.
  5. Remove the 4 bolts securing the ignition coil/control module to the ignition control module bracket.
  6. Position the ignition coil/control module aside out of the way.
  7. Remove the bolt (3) from the fuel injector wire harness bracket (4) and positive crankcase ventilation (PCV) valve fresh air tube retainer.
  8. Remove the engine wire harness retainers from the ignition control module bracket studs (5).

  9. Object Number: 1087631  Size: SH
  10. Remove the nut (1) retaining the heater outlet pipe.
  11. Lift pipe up slightly to gain access for the removal of the 2 ignition control module bracket bolts.

  12. Object Number: 1087898  Size: SH
  13. Remove the ignition control module bracket bolts (2).
  14. Remove the ignition control module bracket nuts (6).
  15. Remove the ignition control module bracket.

Installation Procedure


    Object Number: 1087898  Size: SH
  1. Install the ignition control module bracket.
  2. 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.

  3. Install the ignition control module bracket nuts (6).
  4. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  5. Install the ignition control module bracket bolts (2).
  6. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 1087631  Size: SH
  7. Install the nut (1) retaining the heater outlet pipe.
  8. Tighten
    Tighten the nut to 25 N·m (18 lb ft).


    Object Number: 1087898  Size: SH
  9. Install the engine wire harness retainers to the ignition control module bracket studs (5).
  10. Install the bolt (3) from the fuel injector wire harness bracket (4) and PCV valve fresh air tube retainer.
  11. Tighten
    Tighten the bolts to 5 N·m (44 lb in).

  12. Install the ignition coil/control module to the ignition control module bracket.
  13. Install the 4 bolts securing the ignition coil/control module to the ignition control module bracket.
  14. Tighten
    Tighten the bolts to 4.5 N·m (40 lb in).

  15. Install the spark plug wire retainer (1) to the ignition control module bracket.
  16. Connect the ignition coil/control module electrical connectors.
  17. Install the injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  18. Connect the negative battery cable. Refer to Lifting and Jacking the Vehicle .