GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Tahoe - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Ignition Coil Replacement

Removal Procedure

    Object Number: 1707122 Size: SH
  1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement.
  2. Disconnect the ignition coil wiring harness electrical connector (1) from the ignition coil.

    3. Object Number: 1707124 Size: SH
  3. Remove the spark plug wire from the ignition coil.
    4. • Twist the spark plug wire boot a 1/2 turn.
    • Pull only on the boot in order to remove the wire from the ignition coil.
  4. Remove the ignition coil bolts.
  5. Remove the ignition coil from the bracket. (left side shown, right side similar).
  6. There are 2 different manufacturers for the ignition coils and coil brackets. They are as follows:

    7. Object Number: 260177 Size: SH
  7. The Melco® (1) ignition coil is a square design.
  8. The Delphi® (2) ignition coil is a round design.

    9. Object Number: 260077 Size: SH
  9. The Melco® ignition coil bracket (1) is a square design.
  10. The Delphi® ignition coil bracket (2) is a round design.

Installation Procedure

    Object Number: 1707124 Size: SH
  1. Position the ignition coil to the ignition coil bracket. (left side shown, right side similar).

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the ignition coil bolts.

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  3. Install the spark plug wire to the ignition coil.
  4. Inspect the spark plug wire for proper installation:
    5. • Push sideways on each boot in order the inspect the seating.
    • Reinstall any loose boot.

    Object Number: 1707122 Size: SH
  5. Connect the ignition coil wiring harness electrical connector (1) to the ignition coil.
  6. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement.