GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express - AWD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Spark Plug Replacement

Removal Procedure
  1. Remove the spark plug wires. Refer to Spark Plug Wire Replacement.

    2. Object Number: 14824 Size: SH
  2. Loosen each spark plug 1 or 2 turns.
  3. Brush or air blast away any dirt from around the spark plugs.
  4. Remove the spark plugs 1 at a time. Place each plug in a tray marked with the corresponding cylinder numbers.

Installation Procedure

    Object Number: 14824 Size: SH
  1. Properly position each spark plug washer.
  2. Inspect each spark plug gap. Adjust each plug as needed.

    3. Specification
    Spark plug gap: 1.524 mm (0.060 in)

  3. Hand start the spark plugs in the corresponding cylinders.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Tighten the spark plugs for used heads to 15 N·m (11 lb ft). Tighten the spark plugs for new aluminum heads to 20 N·m (15 lb ft). Tighten the spark plugs for new iron heads to 30 N·m (22 lb ft).
  5. Install the spark plug wires. Refer to Spark Plug Wire Replacement.