GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 602330  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
  2. Disconnect the ignition control module (ICM) electrical connector.

  3. Object Number: 602328  Size: SH
  4. Using the removal sequence, remove the ignition cassette retaining bolts.
  5. Carefully, remove the ignition cassette.

Installation Procedure


    Object Number: 602330  Size: SH

    Important: Be sure the ignition cassette grounding spring and insulator are in place when installing the ignition cassette.

  1. Connect the spark plug boots to the spark plugs.
  2. Carefully, install the ignition cassette.

  3. Object Number: 602327  Size: SH

    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.

  4. Install the ignition cassette retaining bolts.
  5. Tighten
    Using the installation torque sequence, tighten the ignition cassette retaining bolts to 9 N·m (80 lb in).

  6. Reconnect the ignition cassette electrical connector.
  7. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.