GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2008 🢒 Astra 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Spark Plug Replacement

Removal Procedure
  1. Remove the ignition coil. Refer to Ignition Coil Replacement .
  2. Remove the 4 spark plugs.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.

  1. Install the 4 spark plugs.

    2. Tighten
    Tighten the 4 spark plugs to 25 N·m (18 in ft).

  2. Install the ignition coil. Refer to Ignition Coil Replacement .