Yukon XL 4WD V8-5.3L (2011)
PCV Valve Hose: Service and Repair
Positive Crankcase Ventilation Hose/Pipe/Tube Replacement
Removal Procedure
1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement See: Engine, Cooling and
Exhaust/Engine/Intake Manifold/Service and Repair/Upper Intake Manifold Sight Shield Replacement.
2. Remove the positive crankcase ventilation (PCV) hose from the intake manifold fitting and left valve rocker arm cover, if required.
3. Remove the PCV tube (1) from the air cleaner outlet duct, if required.
