Valve Rocker Arm Cover Replacement - Left

REMOVAL PROCEDURE





1. Disconnect the battery negative cables.





2. Remove the CDR valve and hose (right side).
3. Remove the upper intake manifold from the vehicle.
4. Remove the lower intake manifold from the vehicle.
5. Remove the fuel injection lines.

IMPORTANT:
^ Do not bend the fuel injector lines in order to ease in the removal of the valve rocker arm cover. Damage to the fuel injector lines will occur.
^ Mark the fuel line retaining clips and the stud in order to ensure proper reinstallation.

6. Remove the engine oil level indicator and tube from the engine block.
7. Remove the transmission oil level indicator and tube.
8. Remove the fuel return line clip at the valve rocker arm cover stud.
9. Remove the wiring harness at the valve rocker arm cover and move aside (left side).
10. Remove the electrical connectors at the valve rocker arm cover and move aside (left side).





11. Remove the rear generator support bracket.
12. Remove the valve rocker arm cover bolts.

NOTICE: Prying on the valve rocker arm cover may cause damage to the sealing surfaces. Use a block of wood against the side of the valve rocker arm cover and strike with a hammer in a sideways direction to shear the RTV sealant.

13. Remove the valve rocker arm cover.
14. Clean the oil and grease from the sealing surfaces on the valve rocker arm and the cylinder head.
Use a suitable solvent. Refer to Cylinder Head Clean and Inspect under Engine Unit Repair.

INSTALLATION PROCEDURE





1. Apply a 5 mm (3/16 inch) bead of RTV sealant GM P/N 12345739 to the valve rocker arm covers, inboard of the bolt holes. The sealer must be wet to the touch when the bolts are tightened.

NOTICE: Do not allow the RTV sealant into the valve rocker arm cover bolt holes. This may cause a "valve lock" condition, when the bolts are tightened, damaging the cylinder head casting.





2. Install the valve rocker arm cover (s) to the cylinder head.





3. Install the valve rocker arm cover to the cylinder head.
^ Tighten the bolts to 22 Nm (16 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.

4. Install the fuel injection lines and clips.
5. Install the wiring harness and all the electrical connectors at the valve rocker arm cover from the clips and move aside (left side).
6. Install the engine oil level indicator and tube.
7. Install the transmission oil level indicator tube and bracket.





8. Install the CDR valve and hose.
9. Install the rear generator support bracket.
10. Install the lower intake manifold to the cylinder head.
11. Install the upper intake manifold to the lower intake manifold.
12. Connect the battery negative cables to the batteries.