GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 LeSabre 🢒 Engine 🢒 Engine Electrical 🢒 Spark Plug Wire Harness Replacement

Removal Procedure

Important: 

   • Do not remove the spark plugs when the engine is warm.
   • Clean dirt and debris from the spark plug recess area.
   • Use care when removing the spark plug boots from the spark plugs. Twist the boot 1/2 turn before removing the boot and the PULL ON THE BOOT ONLY to remove it. DO NOT PULL ON THE WIRE as this may damage the spark plug wire.

  1. Verify that the ignition system is OFF.

    2. Object Number: 205499 Size: SH
  2. Remove the four bolts (1) that retain the injector sight shield.
  3. Remove the injector sight shield.
  4. Remove spark plug wires from the ignition coils.

Installation Procedure
  1. Position the spark plug wires on top of the engine
  2. Install the spark plug wires into the intake manifold cover channels.
  3. Connect the spark plug wires to the spark plugs. Make sure the boots are fully seated.
  4. Connect the spark plug wires to the ignition coils.
  5. Install the injector sight shield.

    6. Object Number: 205499 Size: SH
  6. Install the four bolts (1) that retain the injector sight shield.