GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Engine 🢒 Engine Cooling 🢒 Water Outlet Housing Cleaning and Inspection

Cleaning Procedure
  1. Clean the water outlet housing with solvent.

    2. Warning: Refer to Safety Glasses Warning in the Preface section.

  2. Dry the water outlet housing with compressed air.

Inspection Procedure

    Object Number: 1644284 Size: SH
  1. Inspect the front of the water outlet housing for the following:
    2. • Damage or restrictions to the radiator hose connection (1)
    • Damage to the water outlet housing-to-cylinder head mounting holes (2)
    • Damage to the engine coolant air bleed fitting (3)
    • Damage to the water outlet housing (4)
    • Damage or restrictions to the bypass hose connection (5)

    Object Number: 1644285 Size: SH
  2. Inspect the rear of the water outlet housing for the following:
    3. • Damage to the gasket sealing surface (1)
    • Damage, blockage or excessive corrosion to the engine coolant passages (2)
  3. Repair or replace the water outlet housing as necessary.