GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 15977  Size: SH
  1. Note the position of the spark plug wires for the installation and disconnect the spark plug wires from the ignition coils.

  2. Object Number: 12299  Size: SH
  3. Remove the 2 screws (1) securing the ignition coil (2) to the ignition control module (3).
  4. Remove the ignition coil (2).

Installation Procedure


    Object Number: 12299  Size: SH
  1. Install the ignition coil (2).
  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 coil screws (1).
  4. Tighten
    Tighten the screws to 4.5 N·m (40 lb in).


    Object Number: 15977  Size: SH
  5. Connect the spark plug wires as noted during the removal.