GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement .

  2. Object Number: 1608869  Size: SH
  3. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).
  4. Disconnect the ignition coil electrical connector (6).

  5. Object Number: 1608802  Size: SH
  6. Disconnect the left side spark plug wires from the ignition coil.

  7. Object Number: 1608803  Size: SH
  8. Disconnect the right side spark plug wires from the ignition coil.

  9. Object Number: 1646089  Size: SH
  10. Remove the ignition coil bracket bolts/nuts.
  11. Remove the ignition coil assembly.
  12. Remove the ignition coil bracket studs, if necessary.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1646089  Size: SH
  1. Install the ignition coil bracket studs, if necessary.
  2. Tighten
    Tighten the studs to 25 N·m (15 lb ft).

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


    Object Number: 1608803  Size: SH
  6. Connect the right side spark plug wires to the ignition coil.

  7. Object Number: 1608802  Size: SH
  8. Connect the left side spark plug wires to the ignition coil.

  9. Object Number: 1608869  Size: SH
  10. Connect the ignition coil electrical connector (6).
  11. Connect the MAP sensor electrical connector (1).
  12. Install the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement .

Removal Procedure

  1. Remove the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement.

  2. Object Number: 1608869  Size: SH
  3. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).
  4. Disconnect the ignition coil electrical connector (6).

  5. Object Number: 1608802  Size: SH
  6. Disconnect the left side spark plug wires from the ignition coil.

  7. Object Number: 1608803  Size: SH
  8. Disconnect the right side spark plug wires from the ignition coil.

  9. Object Number: 1646089  Size: SH
  10. Remove the ignition coil bracket bolts/nuts.
  11. Remove the ignition coil assembly.
  12. Remove the ignition coil bracket studs, if necessary.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1646089  Size: SH
  1. Install the ignition coil bracket studs, if necessary.
  2. Tighten
    Tighten the studs to 25 N·m (15 lb ft).

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


    Object Number: 1608803  Size: SH
  6. Connect the right side spark plug wires to the ignition coil.

  7. Object Number: 1608802  Size: SH
  8. Connect the left side spark plug wires to the ignition coil.

  9. Object Number: 1608869  Size: SH
  10. Connect the ignition coil electrical connector (6).
  11. Connect the MAP sensor electrical connector (1).
  12. Install the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement.