GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1949973  Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Disconnect the chassis fuel feed pipe quick connect fitting from the engine fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service .
  3. Important: Note the routing of the spark plug wires prior to disconnecting the wires from the ignition coil.

  4. Disconnect the spark plug wires (1) from the ignition coil.
  5. Remove the spark plug wire retainer (2) from the ignition coil bracket.
  6. Reposition the spark plug wires out of the way.

  7. Object Number: 1949972  Size: SH
  8. Disconnect engine wiring harness electrical connector (1) from the ignition coil.

  9. Object Number: 1949974  Size: SH
  10. Remove the ignition coil bolts (1) and ignition coil (2) from the bracket.

  11. Object Number: 1949975  Size: SH
  12. If required, remove the lower ignition coil bracket bolt (3).
  13. Remove the engine wiring harness ground terminal from the ignition coil bracket.
  14. Remove the upper ignition coil bracket bolts (1) and bracket (2).

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1949975  Size: SH
  1. If required, position the ignition coil bracket to the lower intake manifold and install the upper bolts.
  2. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  3. Position the engine wiring harness ground terminal to the ignition coil bracket.
  4. Install the lower ignition coil bracket bolt (3).
  5. Tighten
    Tighten the bolt to 40 N·m (30 lb ft).


    Object Number: 1949974  Size: SH
  6. Place the ignition coil (2) on top of the bracket and install the bolts (1).
  7. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1949972  Size: SH
  8. Connect engine wiring harness electrical connector (1) to the ignition coil.

  9. Object Number: 1949973  Size: SH
  10. Position the spark plug wires and install the spark plug wire retainer (2) to the ignition coil bracket.
  11. Connect the spark plug wires (1) to the ignition coil as noted during removal.
  12. Connect the chassis fuel feed pipe quick connect fitting to the engine fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service .
  13. Install the engine cover. Refer to Engine Cover Replacement .