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

Removal Procedure

    Object Number: 12299 Size: SH
  1. Remove the 14-way electrical connector from the ignition control module (ICM).
  2. Disconnect the spark plug wires from the coil assemblies. Before removing the wires, note the position of the wires .
  3. Remove the ICM nuts.
  4. Remove the ICM from the bracket.
  5. Remove the ignition coil screws (1).
  6. Remove the ignition coils (2) from the ICM (3).

Installation Procedure

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

    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 ignition coil screws (1).

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

  3. Install the ICM to the bracket.
  4. Install the ICM nuts.

    5. Tighten
    Tighten the nuts to 10 N·m (89 lb in).

  5. Connect the spark plug wires to the ignition coils.
  6. Install the 14-way electrical connector to the ICM.

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