PCV Valve Hose: Service and Repair

Crankcase Ventilation Hoses/Pipes Replacement

Removal Procedure
1. Remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)).





2. Remove the Positive Crankcase Ventilation (PCV) hose from the intake manifold and valve rocker arm cover.





3. Remove the vent hose from the throttle body and the valve rocker arm cover.
4. Replace the hose as necessary.

Installation Procedure





1. Install the hose as necessary.
2. Install the vent hose to the throttle body and the valve rocker arm cover.





3. Install the PCV hose to the intake manifold and valve rocker arm cover.
4. Install the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)).