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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1072 (Engine Mechanical - 6.6L (2 Of 5)) >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation Valve Replacement (Driver Side) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Turbocharger Clamp & Charged Air Cooler Inlet Duct Connector
    GM1334380Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: After removing the charged air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.
  1. Loosen the charged air cooler inlet duct connector to turbocharger clamp (1).
    2. 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.
  2. Remove the charged air cooler inlet duct connector (4) from the turbocharger.
    3. Fig 2: View Of PCV Cover, Diaphragm & Spring
    GM1336134Courtesy of GENERAL MOTORS CORP.
  3. Remove the positive crankcase ventilation (PCV) cover screws.
  4. Remove the PCV cover, diaphragm, and spring.
  5. Clean and inspect the cover, diaphragm, and spring.
  6. Discard the diaphragm if damage is found.
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