GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 Terraza Ext. 🢒 Engine 🢒 Engine Controls - 3.5L (LX9) 🢒 Ignition Coil Replacement

Removal Procedure
  1. Disconnect the brake booster vacuum hose from the intake manifold.
  2. Note the position of the spark plug wires for the installation and disconnect the spark plug wires from the ignition coil and module assembly.

    3. Object Number: 1238999 Size: SH
  3. Remove the 4 screws securing the ignition coil and module assembly to the bracket.
  4. Remove the ignition coil and module assembly.

Installation Procedure

    Object Number: 1238999 Size: SH
  1. Install the ignition coil and module assembly to the bracket.

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

  2. Install the ignition coil and module assembly screws.

    3. Tighten
    Tighten the screws to 4.5 N·m (40 lb in).

  3. Connect the spark plug wires as noted during the removal.
  4. Connect the brake booster vacuum hose from the intake manifold.