GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2010 🢒 Sierra Denali 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Valve Rocker Arm Cover Cleaning and Inspection - Upper

    Object Number: 1336134 Size: SH
  1. Remove the PCV cover screws (1).
  2. Remove the PCV cover (2), diaphragm (3), and spring (4).

    3. Object Number: 1336135 Size: SH
  3. Clean the upper valve rocker arm cover. Remove any sludge or other deposits.
  4. Clean the upper valve rocker arm cover mating surface.
  5. Inspect the upper valve rocker arm cover for cracks or other damage.
  6. Inspect the upper valve rocker arm cover mating surfaces for damage.
  7. Replace the upper valve rocker arm cover if any damage is found.

    8. Object Number: 1336134 Size: SH
  8. Inspect the PCV cover (2), diaphragm (3), and spring (4) for damage.
  9. Install the PCV spring.
  10. Install the PCV diaphragm.
  11. Install the PCV cover.

    12. Caution: Refer to Fastener Caution in the Preface section.

  12. Install the PCV cover screws (1) and tighten to 4 N·m (35 lb in).