GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Impala 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Ignition Control Module Replacement

Removal Procedure
  1. Turn OFF the ignition.

    2. Object Number: 15977 Size: SH
  2. Disconnect all the electrical connectors at the ignition control module (ICM).
  3. Note position of spark plug wires for installation and disconnect the spark plug wires from the ignition coils.
  4. Remove the screws securing the coil assemblies to the ICM.
  5. Disconnect the coils from the ICM.
  6. Remove the fasteners securing the ICM assembly to the engine.
  7. Remove the ICM from the module mounting bracket.

Installation Procedure
  1. Install the ICM on the module mounting bracket.

    2. Object Number: 15977 Size: SH
  2. Install the coils to the ICM.

    3. 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 screws through the coils and the module into the module mounting bracket.

    4. Tighten
    Tighten the screws to 4-5 N·m (40 lb in).

  4. Connect the spark plug wires as noted during the removal.
  5. Connect the electrical connectors to the ignition control module.