GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN 49485 Gasket Remover

For equivalent regional tools, refer to Special Tools.

Cleaning Procedure


    Object Number: 1408422  Size: SH
  1. Remove any RTV sealant (1) from the engine front cover using EN 49485 remover .
  2. Clean out debris from the bolt holes.
  3. Clean the engine front cover in solvent.
  4. Warning: Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury.

  5. Dry the engine front cover with compressed air.

Inspection Procedure


    Object Number: 1408425  Size: SH
  1. Inspect the exterior of the engine front cover for the following conditions:
  2. • 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)
    • Damage to the crankshaft front oil seal bore (5)
    • Gouges or damage to the water pump sealing surfaces (6)
    • Damage to the water pump bolt hole threads (7)

    Object Number: 1408427  Size: SH
  3. Inspect the interior of the engine front cover for the following conditions:
  4. • Damage to the engine front cover bolt holes (1)
    • Gouges or damage to the engine front cover sealing surfaces to the engine block (7), oil pan (5), and/or camshaft covers (2)
    • Gouges or damage to the water pump seal area (3)
    • Loose or damaged deadener plates (4)
    • 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
  5. Repair or replace the engine front cover as necessary.