GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Turn the ignition OFF.
  2. Remove the engine cover to have it checked. Refer to Fuel Injector Sight Shield Replacement .
  3. Important: Do NOT disconnect the fuel pipes and/or hoses.

  4. If you are replacing the ignition coil for cylinder 2, remove and reposition the intake manifold. Perform the following steps.
  5. 3.1. Disconnect the air cleaner duct from the throttle body.
    3.2. Disconnect the positive crankcase ventilation (PCV) hose from the right bank camshaft cover.

            Important: Do NOT separate the upper intake manifold from the lower intake manifold.

    3.3. Remove the intake manifold bolts.

    Object Number: 1306504  Size: SH
    3.4. Remove the intake manifold brace bolts (1 and 2) and the brace.
    3.5. Remove and reposition the upper intake manifold with the lower intake manifold in order to gain sufficient clearance for ignition coil removal.

    Object Number: 887884  Size: SH
  6. Remove the ignition coil electrical connectors.

  7. Object Number: 868186  Size: SH
  8. Remove the ignition coil bolts.
  9. Remove the ignition coils.

Installation Procedure


    Object Number: 860797  Size: SH
  1. Install the ignition coils.
  2. Notice: Refer to Fastener Notice in the Preface section.

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


    Object Number: 887888  Size: SH
  5. Install the ignition coil electrical connectors.