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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1057 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 3 Of 4)) >> Repair Instructions (Off-Vehicle - Part 3) >> Valve Rocker Arm Cover Cleaning and Inspection - Upper

Valve Rocker Arm Cover Cleaning and Inspection - Upper

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 injector seals.
    2. Fig 1: View Of Injector Seals
    GM663628Courtesy of GENERAL MOTORS CORP.
  2. Remove the PCV cover screws.
  3. Remove the PCV cover, diaphragm, and spring.
    4. Fig 2: View Of PCV Cover, Diaphragm, Screws & Spring
    GM663631Courtesy of GENERAL MOTORS CORP.
  4. Clean the upper valve rocker arm cover. Remove any sludge or other deposits.
  5. Clean the upper valve rocker arm cover mating surface.
  6. Inspect the upper valve rocker arm cover for cracks or other damage.
    7. Fig 3: View Of Valve Rocker Arm Cover Inspection Areas
    GM663733Courtesy of GENERAL MOTORS CORP.
  7. Inspect the upper valve rocker arm cover mating surfaces for damage.
  8. Replace the upper valve rocker arm cover if any damage is found.
  9. Inspect the PCV cover, diaphragm, and spring for damage.
  10. Install the PCV spring.
  11. Install the PCV diaphragm.
  12. Install the PCV cover.
    13. NOTE: Refer to Fastener Notice in Cautions and Notices.
  13. Install the PCV cover screws.

    Tighten:  Tighten the PCV cover screws to 4 N.m (35 lb in).

    14. Fig 4: View Of PCV Cover, Diaphragm, Screws & Spring
    GM663631Courtesy of GENERAL MOTORS CORP.
  14. Install new injector seals.
    15. Fig 5: View Of Injector Seals
    GM663628Courtesy of GENERAL MOTORS CORP.
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