GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Express 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Valve Rocker Arm Cover Replacement - Right Side

Removal Procedure

    Object Number: 183399 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the spark plug wires for the right side of the engine from the distributor cap.
  3. Remove the PCV tube from the valve rocker arm cover and the air inlet duct.
  4. Move the engine wiring harness aside.

    5. Object Number: 374491 Size: SH
  5. Remove the screw holding the oil fill tube to the oil fill tube lower support.
  6. Remove the oil fill tube from the right valve rocker arm cover and move aside.

    7. Object Number: 328568 Size: SH
  7. Remove the valve rocker arm cover bolts.
  8. Remove the valve rocker arm cover bolt grommets.
  9. Discard the valve rocker arm cover bolt grommets.

    10. Object Number: 480524 Size: SH
  10. Remove the valve rocker arm cover.

    11. Object Number: 328573 Size: SH
  11. Remove the valve rocker arm cover gasket.
  12. Discard the valve rocker arm cover gasket.
  13. Clean all sealing surfaces. Refer to Valve Rocker Arm Cover Cleaning and Inspection in Engine Unit Repair.

Installation Procedure

    Object Number: 328573 Size: SH

    Important: Do not reuse the valve cover gasket or the valve rocker arm cover bolt grommets.

  1. Install the NEW valve rocker arm cover gasket into the groove of the valve rocker arm cover.
  2. Install the NEW valve rocker arm cover bolt grommets into the valve rocker arm cover.

    3. Object Number: 480524 Size: SH
  3. Install the valve rocker arm cover onto the cylinder head.

    4. Object Number: 328568 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 valve rocker arm cover bolts.

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


    Object Number: 374491 Size: SH
  5. Install the oil fill tube in the right valve rocker arm cover.
  6. Install the oil fill tube and bolt to the oil fill tube lower support.

    7. Tighten
    Tighten the oil fill tube to lower support bolt to 5 N·m (44 lb in).


    Object Number: 183399 Size: SH
  7. Install the PCV hose in the valve rocker arm cover and to the air inlet duct.
  8. Connect the spark plug wires to the distributor cap.
  9. Position the engine wiring harness.
  10. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.