LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Upper 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. 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. Loosen the outlet duct clamps at the turbocharger and the mass air flow/intake air temperature (MAF/IAT) sensor.
  5. Remove the outlet duct from the turbocharger.
    6. Fig 2: View Of Outlet Duct
    GM813244Courtesy of GENERAL MOTORS CORP.
  6. 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. Remove the heater outlet hose bolt (2) and nut (1).
    9. Fig 4: View Of Heater Outlet Nut & Bolt
    GM665386Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel filter mounting bolts. Refer to Fuel Filter Replacement in Engine Controls - 6.6L.
  10. Remove the fuel injection control module. Refer to Fuel Injection Control Module Replacement in Engine Controls - 6.6L.
  11. Position the heater outlet hose out of the way.
  12. Disconnect positive crankcase ventilation (PCV) hose from the valve rocker arm cover.
    13. Fig 5: View Of Crankcase Ventilation Hoses At Valve Rocker Arm Covers
    GM687021Courtesy of GENERAL MOTORS CORP.
  13. Remove the sleeve nut plate bolts and plates.
  14. Remove the fuel injector feed pipes.
    15. Fig 6: View Of Fuel Injector Feed Pipes (Right)
    GM798894Courtesy of GENERAL MOTORS CORP.
  15. Remove the upper valve rocker arm cover bolts.

    Note the location of any wire harness clips.

    16. IMPORTANT: The valve rocker arm cover uses sealer. Pry only at the location shown in order to avoid damage to the sealing surfaces.
  16. Using a suitable tool at the prying location, loosen the upper valve rocker arm cover.
    17. Fig 7: View Of Upper Valve Rocker Arm Cover Prying Location
    GM665256Courtesy of GENERAL MOTORS CORP.
  17. Remove the upper valve rocker arm cover.
    18. Fig 8: View Of Upper Valve Rocker Arm Cover
    GM660467Courtesy of GENERAL MOTORS CORP.
  18. If required, clean and inspect the upper valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection - Upper .
scientia non olet · About LEMON Manuals