GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

  3. Object Number: 1811485  Size: SH
  4. Disconnect the engine wiring harness electrical connector(s) (1) from the ignition coil(s).

  5. Object Number: 1578474  Size: SH
  6. Remove the ignition coil bolt(s).
  7. Remove the ignition coil(s).

Installation Procedure


    Object Number: 1578474  Size: SH
  1. Install the ignition coil(s).
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the ignition coil bolt(s).
  4. Tighten
    Tighten the bolt(s) to 10 N·m (89 lb in).


    Object Number: 1811485  Size: SH
  5. Connect the engine wiring harness electrical connector(s) (1) to the ignition coil(s).
  6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .