GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Chevy G Van 🢒 Engine 🢒 Engine Controls - 5.0L, 5.7L, and 7.4L 🢒 Valve Rocker Arm Cover Replacement

Removal Procedure
  1. Disconnect the battery negative cable assembly from the battery negative terminal.

    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.

    in General Information.
  2. Remove the engine cover. Refer to Engine Cover in Interior Trim.
  3. Remove the coolant reservoir. Refer to Coolant Reservoir Replacement in Engine Cooling.
  4. Remove the air cleaner assembly and the intake duct. Refer to Air Cleaner in Engine Controls.
  5. Remove the spark plug wires. Refer to Spark Plug Wire Replacement in Engine Electrical.
  6. Disconnect the wiring harness and electrical connectors, then move aside.
  7. Remove the following components for access to the right-hand valve rocker arm cover:
    8. • The purge solenoid and vacuum lines
    • The crankcase vent hose
    • The oil level indicator tube and bracket
    • The air cleaner vent tube
    • The oil fill tube
  8. Remove the following components for access to the left-hand valve rocker arm cover:
    9. 8.1. The air conditioning compressor and lay aside. Refer to Compressor in Heater, Ventilation, and Air Conditioning.
    8.2. The EGR valve inlet pipe
    8.3. The PCV and the hose

    Object Number: 68709 Size: SH
  9. Remove the valve rocker arm cover bolts.
  10. Remove the valve rocker arm cover and the gasket.
  11. Clean all traces of old gasket from the valve rocker arm cover and the cylinder head.
  12. Inspect the valve rocker arm cover sealing surface for distortion. Replace the valve rocker arm cover if necessary.

Installation Procedure

    Object Number: 68709 Size: SH
  1. Install a new valve rocker arm cover gasket.
  2. Install the valve rocker arm cover.
  3. Install the valve rocker arm cover bolts.

    4. Tighten
    Tighten the valve rocker arm cover bolts to 12 N·m (106 lb in).

    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 components as follows for the left-hand valve rocker arm cover:
    5. 4.1. The air conditioning compressor and the bracket. Refer to Compressor in Heater, Ventilation, and Air Conditioning.
    4.2. The EGR valve inlet pipe
    4.3. The PCV and the hose
  5. Install the components as follows for the right-hand valve rocker arm cover:
    6. 5.1. The purge solenoid and vacuum lines
    5.2. The crankcase ventilation hose
    5.3. The oil level indicator tube bracket
  6. Install the wiring harnesses and all electrical connectors to the valve rocker arm cover clips.
  7. Install the spark plug wires. Refer to Spark Plug Wire Replacement in Engine Electrical.
  8. Install the air cleaner assembly and the intake duct. Refer to Air Cleaner in Engine Controls.
  9. Install the coolant reservoir bottle. Refer to Coolant Reservoir Replacement in Engine Cooling.
  10. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  11. Connect the battery negative cable assembly to the battery negative terminal.

    12. Tighten
    Tighten the bolt to 15 N·m (11 lb ft).