GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Express 🢒 Preface 🢒 Cautions and Notices 🢒 Valve Rocker Arm Cover Replacement - Left Side

Removal Procedure
  1. Remove the engine cover. Refer to Engine Cover Replacement.

    2. Object Number: 1938437 Size: SH
  2. Remove the coil wiring harness bracket nut (1).
  3. Remove the coil wiring harness bracket and set aside.

    4. Object Number: 1938446 Size: SH
  4. Disconnect the engine coolant temperature (ECT) sensor electrical connector (1).
  5. Disconnect the power brake booster vacuum hose from the vacuum fitting.

    6. Object Number: 869710 Size: SH
  6. Remove the positive crankcase ventilation (PCV) valve hose from the valve cover and rocker cover.

    7. Object Number: 869729 Size: SH
  7. Remove the rocker arm cover bolts.
  8. Remove and discard the rocker arm cover bolt grommets, if necessary.
  9. Remove the rocker arm cover.

    10. Object Number: 328573 Size: SH
  10. Remove and discard the rocker arm cover gasket.
  11. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Cleaning and Inspection .

Installation Procedure

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


    Object Number: 328573 Size: SH
  1. Install a NEW rocker arm cover gasket to the cover.
  2. Install NEW rocker arm cover bolt grommets to the cover, if necessary.

    3. Object Number: 869729 Size: SH
  3. Install the rocker arm cover.

    4. 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.

    5. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 869710 Size: SH
  5. Install the PCV valve hose to the valve cover and rocker cover.

    6. Object Number: 1938446 Size: SH
  6. Connect the power brake booster vacuum hose to the vacuum fitting.
  7. Connect the ECT sensor electrical connector (1).

    8. Object Number: 310241 Size: SH
  8. Install the coil wiring harness bracket.
  9. Install the coil wiring harness bracket nut.

    10. Tighten
    Tighten the nuts to 9 N·m (80 lb in).

  10. Install the engine cover. Refer to Engine Cover Replacement.