GM Service Manual Online
For 1990-2009 cars only

Spark Plug LD9

Removal Procedure

Tools Required

J 36011 Spark Plug Connector Assembly Removal Tool

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Remove the negative battery cable.
  2. Remove the integrated Direct Ignition (IDI assembly 4 bolts and connector.

  3. Object Number: 97618  Size: SH
  4. Remove by pulling straight up on the housing.
  5. Use the J 36011 to remove connector assembly(s) stuck to the spark plugs. Use the tools by first twisting then pulling up on the connector assembly.
  6. Remove the debris from the area around the spark plugs.
  7. Remove the spark plugs using a spark plug socket.

Installation Procedure

  1. Adjust the spark plug gap using a round wire type spark plug gap gauge. While gapping the plug be sure to keep the platinum pads aligned to ensure maximum plug life.

  2. Object Number: 97618  Size: SH
  3. Hand start the spark plugs into the cylinder head and tighten.
  4. Tighten
    Tighten the plugs to 18 N·m (13 lb ft).

    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.

  5. Reinstall onto the IDI any spark plug boot connector assembly that is stuck to a spark plug.
  6. • Check to be sure the spring terminal is inside the boot.
    • Reapply dielectric lubricant to the insulator boot.
  7. Locate the IDI assembly over the spark plugs and push straight down.
  8. Remove any loose lubricant that is present on the IDI assembly to cam housing bolts.
  9. Important: Hand start the IDI assembly to cam housing bolts.

  10. Apply Threadlocker onto the IDI assembly to cam housing bolts.
  11. Tighten
    Tighten the bolts to 22 N·m (16 lb ft).

  12. Install the electrical connector.
  13. Connect the negative battery cable.

Spark Plug L82

Removal Procedure

  1. Turn the ignition key OFF.
  2. Remove foreign material from around the spark plug holes.

  3. Object Number: 97626  Size: SH
  4. Remove the spark plug using a spark plug socket.

Installation Procedure

  1. Adjust the spark plug gap using a round wire type spark plug gap gauge. While gapping the plug be sure to keep the platinum pads aligned to ensure maximum plug life.

  2. Object Number: 97626  Size: SH
  3. Install new plugs and tighten properly.
  4. Reapply dielectric lubricant to the insulator boot.
  5. Tighten
    Tighten to 18 N·m (13 lb ft).

    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.