GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Cutlass 🢒 Engine 🢒 Engine Controls - 3.1L 🢒 Ignition Coil Replacement

Removal Procedure
  1. Turn OFF the ignition switch.

    2. Object Number: 15977 Size: SH
  2. Note position of spark plug wires for installation and disconnect the spark plug wires from ignition coils.
  3. Remove the 2 screws securing ignition coil to ignition control module.
  4. Remove the ignition coil.

Installation Procedure

    Object Number: 15977 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.

  2. Install the 2 screws.

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

  3. Install the spark plug wires.