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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 223 (Engine Mechanical - 3.6L (Ly7) (4 Of 6)) >> Off-Vehicle Repair Instructions - Part 2 >> Engine Front Cover Cleaning and Inspection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Inspecting Exterior Of Engine Front Cover
    GM1211004Courtesy of GENERAL MOTORS CORP.
  1. Inspect the exterior of the engine front cover for the following conditions:
    • Damage to the water pump bolt hole threads (7)
    • Gouges or damage to the water pump sealing surfaces (6)
    • Damage to the crankshaft front oil seal bore (5)
    • Damage to the camshaft position actuator valve oil seal bores (1)
    • Damage to the engine front cover bolt holes (2)
    • Damage and/or corrosion to the engine coolant passage (3)
    • Dents or damage to the exterior (4)
    2. Fig 2: Inspecting Interior Of Engine Front Cover
    GM1211006Courtesy of GENERAL MOTORS CORP.
  2. Inspect the interior of the engine front cover for the following conditions:
    • Gouges or damage to the engine front cover sealing surfaces to the engine block (7), oil pan (5), and/or camshaft covers (2)
    • Damage and/or corrosion to the engine coolant passage (6)
    • Damage to the crankshaft front oil seal bore
    • Gouges or damage to the O-ring sealing areas
    • Gouges or damage to the water pump seal area (3)
    • Loose or damaged deadener plates (4)
    • Damage to the engine front cover bolt holes (1)
  3. Repair or replace the engine front cover as necessary.
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