Removal Procedure
- Disconnect the breather tube at the air cleaner outlet duct.
- Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Resonator Replacement in Engine Controls-4.3L.
- Partially drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
- Remove the radiator inlet hose from the water outlet housing. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
- Remove the PCV valve hose assembly from the valve rocker arm cover.
- Disconnect the engine coolant temperature (ECT) sensor electrical connector.
- Remove the valve rocker arm cover bolts.
- Remove the valve rocker arm cover bolt grommets.
- Discard the valve rocker arm cover bolt grommets.
- Remove the valve rocker arm cover.
- Remove the valve rocker arm cover gasket.
- Discard the valve rocker arm cover gasket.
- Clean the valve rocker arm cover in cleaning solvent.
- Dry the valve rocker arm cover with compressed air.
- Inspect the valve rocker arm cover for the following:
Important: A/C compressor and bracket removal is not necessary.
| • | Damage to the PCV valve grommet (1) |
| • | Damage to the bolt holes (2) |
| • | A damaged valve rocker arm cover may interfere with the valve rocker arms. |
| • | Damage to the exterior of the valve rocker arm cover (3) |
| • | Gouges or damage to the sealing surface (4) |
| • | Damage to the oil fill tube grommet (5) |
| • | Restrictions to the ventilation system passages |
Installation Procedure
- Install the NEW valve rocker arm cover gasket into the groove of the valve rocker arm cover.
- Install the NEW valve rocker arm cover bolt grommets into the valve rocker arm cover.
- Install the valve rocker arm cover onto the cylinder head.
- Install the valve rocker arm cover bolts.
- Install the radiator inlet hose to the water outlet housing. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
- Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
- Install the PCV valve hose assembly to the valve rocker arm cover.
- Connect the ECT sensor electrical connector.
- Install air cleaner outlet duct. Refer to Air Cleaner Outlet Resonator Replacement in Engine Controls-4.3L.
- Connect the breather tube to the air cleaner outlet duct.
Important: Do not reuse the valve cover gasket or the valve rocker arm cover bolt grommets.
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.
Tighten
Tighten the valve rocker arm cover bolts to 12 N·m (106 lb in).
