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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1545 (Engine Cooling System -- 5.7L) >> Repair Instructions >> Thermostat Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The water pump inlet and thermostat MUST be replaced as an assembly. The thermostat is not serviceable separately.
    Fig 1: Radiator Outlet Hose & Clamp
    GM64026Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System .
  2. Reposition the outlet hose clamp at the water pump inlet.
  3. Remove the outlet hose from the water pump inlet.
    4. Fig 2: View Of Water Pump Inlet
    GM370076Courtesy of GENERAL MOTORS CORP.
  4. Remove the water pump inlet bolts.
  5. Remove the water pump inlet.
    6. Fig 3: Thermostat Housing O-Ring Seal
    GM370073Courtesy of GENERAL MOTORS CORP.
  6. The O-ring seal is integral to the thermostat housing.
  7. Remove the thermostat housing.
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