GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Montana SV6 Ext. 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Ignition Coil Replacement

Removal Procedure

    Object Number: 1677963 Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Disconnect the brake booster vacuum hose from the intake manifold.

    3. Object Number: 1675732 Size: SH
  3. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).
  4. Disconnect the ignition coil electrical connector (2).

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

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

    7. Object Number: 1587660 Size: SH
  7. Remove the upper left coil mount bracket bolt (1).
  8. Raise the vehicle. refer to Lifting and Jacking the Vehicle .
  9. Disconnect the wire retainers on the ignition coil bracket.
  10. Remove the remaining bolt (1) and the two nuts (2) on the coil bracket.
  11. Lower the vehicle.
  12. Remove the ignition coil bracket assembly.

Installation Procedure

    Object Number: 1587660 Size: SH
  1. Install the ignition coil (3).
  2. Raise the vehicle.
  3. Install the upper right coil mount bolt.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the coil mount nuts.

    5. Tighten
    Tighten the nuts to 25 N·m (15 lb ft).

  5. Connect the wire retainers to the coil bracket.
  6. Lower the vehicle.
  7. Install the upper left coil mount bolt.

    8. 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
  9. Connect the left side spark plug wires to the ignition coil.

    10. Object Number: 1582011 Size: SH
  10. Connect the ignition coil electrical connector (2).
  11. Connect the MAP sensor electrical connector (1).

    12. Object Number: 1677963 Size: SH
  12. Connect the brake booster vacuum hose to the intake manifold.
  13. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .