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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1949 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Thermostat Replacement (LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Engine Coolant Thermostat Housing & Hoses (LY7)
    GM1846153Courtesy of GENERAL MOTORS CORP.
  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill Without HP5)  or Cooling System Draining and Filling (GE 47716 Fill Without HP5) .
  2. Remove the radiator outlet hose from the thermostat housing.
  3. Remove the heater inlet and outlet hoses.
  4. Remove the surge tank outlet hose.
  5. Remove the thermostat housing bolts (1).
  6. Remove the housing.
  7. Remove the thermostat (2) and discard the thermostat gasket.
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