GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Bonneville 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Ignition Coil Replacement - Bank 2

Removal Procedure

    Object Number: 1283865 Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
  2. Remove the upper filler panel, if necessary, to gain access to the individual coil being serviced.
  3. Remove the ignition coil cover from the cam cover by lifting straight up, if equipped.
  4. Disconnect the ignition coil wiring harness electrical connector from the coil that needs to be replaced.
  5. Remove the ignition coil retaining bolt.
  6. Carefully remove the ignition coil assembly.

    7. Object Number: 887911 Size: SH
  7. If removal of all the coils are necessary, disconnect the main coil wiring harness at the cam cover.

    8. Object Number: 928220 Size: SH
  8. Remove the coil assembly bolts and studs.
  9. Carefully remove the ignition coil assembly.

Installation Procedure

    Object Number: 928220 Size: SH
  1. Carefully install the ignition coil assembly. Ensure that the spark plug seals are in position.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the ignition coil assembly retaining bolts and studs.

    3. Tighten
    Tighten the ignition coil assembly retaining bolts and studs to 10 N·m (89 lb in).


    Object Number: 887911 Size: SH
  3. Connect the main coil wiring harness at the cam cover.

    4. Object Number: 1283865 Size: SH

    Important: Ensure that the spark plug seals are in place when installing the ignition coil.

  4. Install the ignition coil.
  5. Install the ignition coil retaining bolt.

    6. Tighten
    Tighten the ignition coil retaining bolt to 10 N·m (89 lb in).

  6. Reconnect the ignition coil electrical connector.
  7. Install the ignition coil cover to the cam cover.
  8. Install the upper filler panel, if removed during disassembly.
  9. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.