GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2001 🢒 S/T Isuzu - 4WD 🢒 Engine 🢒 Engine Mechanical - 2.2L 🢒 Valve Rocker Arm Cover Replacement

Removal Procedure

    Object Number: 346145 Size: SH
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooing.
  2. Disconnect the power brake booster vacuum hose.
  3. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement in Engine Controls 2.2L (L43).
  4. Remove the throttle body. Refer to Throttle Body Assembly Replacement in Engine Controls 2.2L (L43).

    5. Object Number: 382647 Size: SH
  5. Remove the spark plug wire harness retainer from the thermostat assembly.
  6. Remove the spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement in Engine Controls 2.2L (L43).

    7. Important: Do not bend the thermostat assembly pipe out of the way in order to remove the valve rocker arm cover.

  7. Remove the thermostat assembly. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.

    8. Object Number: 565513 Size: SH
  8. Disconnect the fuel injector harness electrical connector.
  9. Remove the fuel injector harness electrical connector from the bracket on the valve rocker arm cover.
  10. Remove the engine wiring harness from the bracket.
  11. Move and secure the engine wiring harness out of the way.

    12. Object Number: 349613 Size: SH
  12. Remove the engine wiring harness bracket at the rear of the engine using the following procedure:
    13. 12.1. Loosen the bolt at the rear of the cylinder head.
    12.2. Remove the two bolts that secure the bracket to the valve rocker arm cover.
    12.3. Slide the bracket off of the bolt at the rear of the cylinder head.

    Object Number: 511992 Size: SH
  13. Remove the air cleaner outlet resonator bracket.

    14. Object Number: 500536 Size: SH

    Important: The valve rocker arm cover gasket is reusable. Only replace the valve rocker arm cover gasket if it is damaged.

  14. Remove the rocker arm cover bolts, stud (1) and bracket (2).
  15. Remove the rocker arm cover.
  16. Remove the rocker arm cover gasket.
  17. Clean all sealing surfaces and the valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection .

Installation Procedure

    Object Number: 500536 Size: SH
  1. Install a new rocker arm cover gasket in the groove around the rocker arm cover, if the old gasket was removed.
  2. Install the rocker arm cover to the cylinder head.
  3. Install the rocker arm cover bolts, stud (1) and bracket (2).

    4. Object Number: 500535 Size: SH

    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.

  4. Install the rocker arm cover bolts in sequence.

    5. Tighten
    Tighten the rocker arm cover bolts to 10 N·m (89 lb in).


    Object Number: 511992 Size: SH
  5. Install the air cleaner outlet resonator bracket and bolts.

    6. Tighten
    Tighten the air cleaner outlet resonator bracket bolts to 10 N·m (89 lb in).


    Object Number: 349613 Size: SH
  6. Install the wiring harness bracket to the rear of the engine by using the following procedure:
    7. 6.1. Slide the bracket over the bolt at the rear of the cylinder head.
    6.2. Install the two bolts that secure the bracket to the valve rocker arm cover.
  7. Tighten the bolts in the following order:

    8. Tighten

    1. Tighten the two bolts to the valve rocker arm cover to 10 N·m (89 lb in).
    2. Tighten the bolt at the rear of the cylinder head to 25 N·m (18 lb ft).

    Object Number: 565513 Size: SH
  8. Position the engine wiring harness.
  9. Install the engine wiring harness to the bracket.
  10. Install the fuel injector harness electrical connector to the bracket on the valve rocker arm cover.
  11. Connect the fuel injector harness electrical connector.
  12. Install the thermostat assembly. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.
  13. Install the throttle body. Refer to Throttle Body Assembly Replacement in Engine Controls 2.2L (L43).

    14. Object Number: 382647 Size: SH
  14. Install the spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement in Engine Controls 2.2L (L43).
  15. Install the spark plug wire harness retainer to the thermostat assembly.
  16. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement in Engine Controls 2.2L (L43).

    17. Object Number: 346145 Size: SH
  17. Connect the power brake booster vacuum hose.
  18. Fill the engine cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.