Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
PCV Valve Hose: Service and Repair
Crankcase Ventilation Hoses/Pipes Replacement
Removal Procedure
1. Remove the intake manifold cover.
Important: After removing the charged air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.
2. Loosen the charged air cooler inlet duct connector to turbocharger clamp (1).
3. Important: Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.
Remove the charged air cooler inlet duct connector (4) from the turbocharger.
4. Loosen the charged air cooler outlet duct to intake hose clamp.
