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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 994 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Engine Front Cover Cleaning and Inspection

Engine Front Cover Cleaning and Inspection

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 O-ring (1) from the engine front cover.
    2. Fig 1: View Of Engine Front Cover O-Ring
    GM663614Courtesy of GENERAL MOTORS CORP.
  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. NOTE: Refer to Fastener Notice in Cautions and Notices.
  9. Install the oil pressure relief valve with a new O-ring.

    Tighten:  Tighten the oil pressure relief valve to 39 N.m (29 lb ft).

    10. Fig 2: View Of Pressure Relief Valve O-Ring
    GM793901Courtesy of GENERAL MOTORS CORP.
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