GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38491 Spark Plug Boot Removal Tool

Removal Procedure


    Object Number: 194244  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Remove the spark plug wires (2, 4, 6) from the spark plugs at the rear of the engine using the following steps:
  3. 2.1. Note the position of the spark plug wires before removing the wires.
    2.2. Twist the spark plug boot 1/2 turn before removing the boot.
    2.3. Gently pry the heat shield up from spark plugs using the J 38491 .
    2.4. Remove the spark plug wire from the spark plugs at rear of the engine.

    Object Number: 194231  Size: SH
  4. Remove the spark plug wires (1, 3, 5) from the spark plugs at the front of the engine using the following steps:
  5. 3.1. Note the position of the spark plug wires before removing the wires.
    3.2. Twist the spark plug boot 1/2 turn before removing the boot.
    3.3. Gently pry the heat shield up from spark plugs using the J 38491 .
    3.4. Remove the spark plug wires form the spark plugs at the front of the engine.

    Object Number: 194220  Size: SH
  6. Remove the spark plug wires from the ignition coils.
  7. Remove the spark plug wire retaining clips from the rear, front and top of the engine.
  8. Remove the spark plug wires from the engine.
  9. When replacing the spark plug wires transfer any of the following:
  10. • Boot heat shields
    • Spark plug wire conduit
    • Spark plug wire retaining clips

Installation Procedure


    Object Number: 194220  Size: SH
  1. Position the spark plug wires to the engine.
  2. Install the spark plug wire retaining clips from the rear, front and top of the engine.
  3. Install the spark plug wires to the ignition coil in the proper position.

  4. Object Number: 194231  Size: SH
  5. Install the spark plug wires (1, 3, 5) to the spark plugs in the proper position at the front of the engine.

  6. Object Number: 194244  Size: SH
  7. Install the spark plug wires (2, 4, 6) to the spark plugs in the proper position at the rear of the engine.
  8. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .