Positive Crankcase Ventilation Hose/Pipe/Tube Replacement for GMC Truck Envoy - 2WD 2009

1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
2. Remove the positive crankcase ventilation (PCV) foul air hose from the intake manifold and valve rocker arm cover.



3. Remove the PCV fresh air hose (2) from the valve rocker arm cover (1).

1. Install the PCV fresh air hose (2) to the valve rocker arm cover (1).



2. Install the PCV foul air hose to the intake manifold and valve rocker arm cover.
3. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .