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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 994 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement (Right) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement in Engine Controls - 6.6L (LLY).
  2. Loosen the charged air cooler outlet duct to intake hose clamp.
    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.
  3. Remove the charged air cooler outlet duct from the intake.
    4. Fig 1: View Of Charged Air Cooler Outlet Duct
    GM1334381Courtesy of GENERAL MOTORS CORP.
  4. Remove the fuel filter bracket bolts.
  5. Position the fuel filter assembly out of the way.
    6. Fig 2: View Of Fuel Filter Assembly
    GM1334875Courtesy of GENERAL MOTORS CORP.
  6. Remove the positive crankcase ventilation (PCV) cover screws.
  7. Remove the PCV cover, diaphragm, and spring.
    8. Fig 3: View Of PCV Cover, Diaphragm & Spring
    GM1336134Courtesy of GENERAL MOTORS CORP.
  8. Clean and inspect the cover, diaphragm and spring.
  9. Discard the diaphragm if damage is found.
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