GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2002 🢒 Intrigue 🢒 Engine 🢒 Engine Controls - 3.5L 🢒 Ignition Coil Replacement

Tools Required

J 43094 Spark Plug Boot Puller

Removal Procedure
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.5L.

    2. Object Number: 256329 Size: SH
  2. Disconnect the ignition control module electrical connector.
  3. Remove the 7 bolts (2) retaining the ignition cassette to the cam cover.

    4. Object Number: 256304 Size: SH
  4. Gently pry the cassette (2) away from the cam cover (3) using a screwdriver. Protect finished surfaces from scratches with a shop cloth. Pry a small amount in several locations around the edge of the cassette in order to lift the assembly as evenly as possible. DO NOT insert the screwdriver far enough to tear the perimeter seal on the cassette.
  5. Lift the cassette straight up off the spark plugs.

    6. Object Number: 256308 Size: SH
  6. Remove the secondary boots (3) from the spark plugs or the ignition coils using a twisting motion to break the seal. Use the J 43094 . DO NOT use pliers, screwdrivers, or any unauthorized tool to remove the boots.

    7. Object Number: 698624 Size: SH
  7. Remove the cover (4) from the ignition coils (3).
  8. Remove the ignition control module screws  (1).
  9. Remove the ignition control module (2).

Installation Procedure

Important: When servicing the ignition system components, use the following recommended procedures:

   • DO NOT install any component that has visible signs of damage.
   • Inspect the boots for a missing or damaged internal spring.
   • Ensure that the boots are installed right-side up.
   • Ensure that the ignition cassette-to-cam cover ground spring (2) is in place.
   • Repair a torn perimeter seal with an RTV sealant.
   • Clean all the mounting surfaces before installing any components.


    Object Number: 698624 Size: SH
  1. Install the ignition control module (2) on the ignition coils.

    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 control module screws (1).

    3. Tighten
    Tighten the screws to 1.1 N·m (10 lb in).

  3. Install the cover (4) to the ignition coils (3).

    4. Object Number: 256308 Size: SH
  4. Install the boots (3) on the ignition coils until the boots bottom out.

    5. Object Number: 256304 Size: SH
  5. Install the cassette assembly (2) straight down onto the spark plugs.

    6. If this is not possible due to space limitations, start the boots onto the spark plugs and then align and start the ignition coil towers into the boots. Press the ignition cassette (2) down on the plugs as straight as possible.


    Object Number: 256329 Size: SH
  6. Install the 7 bolts (2) that retain the ignition cassette to the cam cover .

    7. Tighten
    Tighten the bolts to 9.5 N·m (84 lb in).

  7. Connect the ignition control module electrical connector.
  8. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.5L.