GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 74059  Size: SH

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 74075  Size: SH
  3. Remove the fuel rail cover.

  4. Object Number: 309721  Size: SH
  5. Disconnect the ignition coil harness connector.
  6. Disconnect the spark plug wire at the ignition coil.
  7. Remove the ignition coil mounting bolts.
  8. Remove the ignition coil.

Installation Procedure


    Object Number: 309721  Size: SH
  1. Install the ignition coil.
  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 mounting bolts.
  4. Tighten
    Tighten the ignition coil mounting bolts to 12 N·m (106 lb in).

  5. Connect the spark plug wire at the ignition coil.
  6. Connect the ignition coil harness connector.
  7. Tighten
    Tighten the harness bolt to 12 N·m (106 lb in).


    Object Number: 74075  Size: SH
  8. Install the fuel rail cover.
  9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  10. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.