LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 997 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement >> 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. Loosen the outlet duct clamp at the upper intake manifold cover.
  2. Remove the upper intake manifold cover from the outlet duct.
  3. Remove the upper intake manifold cover.
    4. Fig 1: View Of Upper Intake Manifold Cover, Outlet Duct & Clamp
    GM813243Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: After removing the turbocharger air ducts, cover the turbocharger openings with tape to prevent entry of objects.
  4. If removing the right side valve, loosen the outlet duct clamps at the turbocharger and the mass air flow/intake air temperature (MAF/IAT) sensor.
  5. Remove the outlet duct.
    6. Fig 2: View Of Outlet Duct
    GM813244Courtesy of GENERAL MOTORS CORP.
  6. If removing the right side valve, loosen the charged air cooler outlet duct to intake hose clamp (1).
    7. 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.
  7. Remove the charged air cooler outlet duct from the intake.
    8. Fig 3: View Of Charged Air Cooler Outlet Duct & Clamps
    GM877275Courtesy of GENERAL MOTORS CORP.
  8. If removing the left side valve, loosen the charged air cooler inlet duct to turbocharger clamp (1).
    9. 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.
  9. Remove the charged air cooler inlet duct from the turbocharger.
    10. Fig 4: View Of Charged Air Cooler Inlet Duct & Clamps
    GM877281Courtesy of GENERAL MOTORS CORP.
  10. In order to access the right side valve, remove the heater outlet hose nut (1).
  11. Remove the heater outlet hose bolt (2).
    12. Fig 5: View Of Heater Outlet Nut & Bolt
    GM665386Courtesy of GENERAL MOTORS CORP.
  12. Position the heater outlet hose out of the way.
  13. Remove the positive crankcase ventilation (PCV) diaphragm cover screws.
  14. Remove the diaphragm cover.
  15. Remove the diaphragm and spring.
  16. Clean the diaphragm cover, spring, and screws.
    17. Fig 6: View Of PCV Diaphragm Cover, Spring & Screws
    GM663631Courtesy of GENERAL MOTORS CORP.
  17. Inspect the diaphragm for cuts or damage.
  18. Discard the diaphragm if damage is found.
scientia non olet · About LEMON Manuals