GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Tracker - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Spark Plug Replacement

Removal Procedure

    Notice: This engine is equipped with an aluminum cylinder head. Allow the engine to cool before removing spark plugs. Removing the spark plugs from an engine at operating temperature may damage the spark plug threads in the cylinder head. Also be sure to clean any dirt or debris from around spark plug holes prior to removing spark plugs.


    Object Number: 198204 Size: SH
  1. Remove the secondary (spark plug) wires (2) from the spark plugs (1).
  2. Remove the spark plugs from the cylinder head.
  3. Inspect the spark plugs for electrode wear, carbon deposits and insulator damage. Refer to Spark Plug Visual Diagnosis .

Installation Procedure

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


    Object Number: 171247 Size: SH

    Important: Use 1 of the following types of spark plugs.

       • NGK Type BKR6E
       • Denso Type K20PR-U
       • AC Type R43XLS

  1. Set spark plug gap to 0.71 mm (0.028 in) using a round wire feeler gauge.
  2. Install the spark plugs to the cylinder head.

    3. Tighten
    Tighten the spark plugs to 28 N·m (21 lb ft).

  3. Install the spark plug wires to the spark plugs.