GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 12299  Size: SH
  1. Disconnect the spark plug wires from the coil assemblies.
  2. Remove 6 screws (1) securing the coil assemblies to the ignition control module.
  3. Remove the coils (2) from the ignition control module (3).

Installation Procedure


    Object Number: 187266  Size: SH
  1. Attach the coils to the ignition control module.
  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 6 ignition coil attaching screws.
  4. Tighten
    Tighten the screws to 4.5 N·m (40 lb in).

  5. Connect the spark plug wires.