GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Engine 🢒 Engine Controls and Fuel - 4.6L 🢒 Ignition Coil Replacement - Bank 1

Removal Procedure

    Object Number: 1662118 Size: SH
  1. Remove both of the fuel injector sight shields. Refer to Fuel Injector Sight Shield Replacement.
  2. If servicing the ignition coil assembly, perform the following steps, if servicing an individual ignition coil proceed to step 7.
  3. Disconnect the engine harness electrical connector (4) from the ignition coil assembly.

    4. Object Number: 1672634 Size: SH
  4. Remove the fuel injector sight shield studs.

    5. Object Number: 1672632 Size: SH
  5. Remove the ignition coil assembly bolts.
  6. Remove the ignition coil assembly.

    7. Object Number: 1672555 Size: SH
  7. Disconnect the individual ignition coil electrical connector (3), as required.
  8. Remove the individual ignition coil bolt (1), as required.
  9. Remove the ignition coil (2), as required.

Installation Procedure

    Object Number: 1672632 Size: SH
  1. If servicing the ignition coil assembly, perform the following steps, if servicing an individual ignition coil proceed to step 6.
  2. Install the ignition coil assembly.

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the ignition coil assembly bolts.

    4. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1672634 Size: SH
  4. Install the fuel injector sight shield studs.

    5. Tighten
    Tighten the studs to 10 N·m (89 lb in).


    Object Number: 1662118 Size: SH
  5. Connect the engine harness electrical connector (4) to the ignition coil assembly.

    6. Object Number: 1672555 Size: SH
  6. Install the ignition coil (2), as required.
  7. Install the individual ignition coil bolt (1), as required.

    8. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  8. Connect the individual ignition coil electrical connector (3), as required.
  9. Install both of the fuel injector sight shields. Refer to Fuel Injector Sight Shield Replacement.