GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2001 🢒 Century 🢒 Engine 🢒 Engine Controls - 3.1L (LG8) 🢒 Spark Plug Wire Replacement

Removal Procedure
  1. Turn OFF the ignition.

    2. Object Number: 211481 Size: SH

    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.

  2. Remove the spark plug wires 2, 4, and 6 from the front bank spark plugs.
  3. Remove the spark plug wires from the retaining clips.

    4. Object Number: 211485 Size: SH
  4. Remove the spark plug wires 1, 3, and 5 from the rear bank spark plugs.
  5. Remove the spark plug wires from the retaining clips.

    6. Object Number: 162818 Size: SH
  6. Remove the spark plug wires from the ignition coils.
  7. Remove the spark plug wires from the engine.
  8. If you are replacing the spark plug wires, transfer any of the following components:
    9. • Boot heat shields
    • Spark plug wire conduit
    • Spark plug wire retaining clips

Installation Procedure

    Object Number: 162818 Size: SH
  1. Install the spark plug wires to the engine.
  2. Install the spark plug wires to the ignition coils.

    3. Object Number: 211485 Size: SH
  3. Install the spark plug wires 1, 3, and 5 to the engine right side spark plugs.
  4. Install the spark plug wires to the retaining clips.

    5. Object Number: 211481 Size: SH
  5. Install the spark plug wires 2, 4, and 6 to the engine left side spark plugs.
  6. Install the spark plug wires to the retaining clips.