GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Park Avenue 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Ignition Control Module Replacement

Removal Procedure
  1. Turn the ignition OFF.
  2. Disconnect the 14-way connector from the ignition control module (ICM).
  3. Disconnect the spark plug wires from the coil assemblies. Before removing the wires, note the position of the wires .

    4. Object Number: 12299 Size: SH
  4. Remove the screws (1) that secure the coil assemblies (2) to the ICM (3).
  5. Remove the coils (2) and the ICM (3) from the bracket.

Installation Procedure

    Object Number: 12299 Size: SH
  1. Attach the coils (2) and the ICM (3) to the 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.

  2. Install the screws (1) that retain the ignition coils (2) and the ICM to the bracket.

    3. Tighten
    Tighten the screws to 4.5 N·m (40 lb in).

  3. Connect the spark plug wires.
  4. Connect the 14-way connector to the module.

    5. Tighten
    Tighten the screw to 2.1 N·m (19 lb in).