GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1608869  Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).
  3. Disconnect the ignition coil electrical connector (6).

  4. Object Number: 1582091  Size: SH
  5. Disconnect the left side spark plug wires from the ignition coil.

  6. Object Number: 1582938  Size: SH
  7. Disconnect the right side spark plug wires from the ignition coil.

  8. Object Number: 1587660  Size: SH
  9. Remove the ignition coil bolts (1).
  10. Remove the ignition coil nuts (2).
  11. Remove the ignition coil (3).
  12. Remove the ignition coil studs (4), if necessary.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1587660  Size: SH
  1. Install the ignition coil studs (4), if necessary.
  2. Tighten
    Tighten the studs to 25 N·m (15 lb ft).

  3. Install the ignition coil (3).
  4. Install the ignition coil nuts (2).
  5. Tighten
    Tighten the nuts to 25 N·m (15 lb ft).

  6. Install the ignition coil bolts (1).
  7. Tighten
    Tighten the bolts to 25 N·m (15 lb ft).


    Object Number: 1582938  Size: SH
  8. Connect the right side spark plug wires to the ignition coil.

  9. Object Number: 1582091  Size: SH
  10. Connect the left side spark plug wires to the ignition coil.

  11. Object Number: 1608869  Size: SH
  12. Connect the ignition coil electrical connector (6).
  13. Connect the MAP sensor electrical connector (1).
  14. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .