GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Engine Front Cover Cleaning and Inspection

    Object Number: 663614 Size: SH
  1. Remove the O-ring (1) from the engine front cover.
  2. Remove the oil pressure relief valve from the engine front cover.
  3. Clean the engine front cover.
  4. Clean the engine front cover mating surfaces.
  5. Inspect the engine front cover mating surfaces for damage.
  6. Inspect the engine front cover O-ring sealing surface for damage.
  7. Inspect the crankshaft front oil seal bore for damage.
  8. Replace the engine front cover if any damage is found.

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


    Object Number: 793901 Size: SH
  9. Install the oil pressure relief valve with a new O-ring and tighten to 39 N·m (29 lb ft).