GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 38491 Spark Plug Heat Shield Removal Tool


    Object Number: 47607  Size: SH
  1. Turn OFF the ignition switch.
  2. Remove the spark plug wire retaining clips from the engine.
  3. Rotate the engine.
  4. Notice: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

    Important: Transfer any of the following when replacing the spark plug wires:

       • Spark plug wire conduit
       • Spark plug wire retaining clips

  5. Disconnect the spark plug wires from the spark plugs using the J 38491 . Be sure to note the position of the spark plug wires BEFORE removing the spark plug wires.

Installation Procedure


    Object Number: 200500  Size: SH
  1. Connect the spark plug wires (1) to the proper location. Refer to the callouts for the coil-to-cylinder combinations.

  2. Object Number: 194150  Size: SH
  3. Return the engine to the proper position.

  4. Object Number: 194134  Size: SH
  5. Install the spark plug wire (1) retaining clips to the engine.