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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Engine Cooling) >> Repair Instructions >> Engine Coolant Thermostat Housing Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The thermostat is not serviceable separately. The thermostat housing (water pump inlet) and thermostat must be replaced as an assembly.
    Fig 1: MAF/IAT Sensor & Air Cleaner Assembly
    GM832908Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system/engine block. Refer to Draining and Filling Cooling System .
  2. Loosen the air cleaner outlet duct clamps at the throttle body and at the Mass airflow (MAF) sensor.
  3. Remove the air cleaner outlet duct.
    4. Fig 2: View Of Water Pump Inlet
    GM370076Courtesy of GENERAL MOTORS CORP.
  4. Remove the radiator outlet hose.
  5. Remove the thermostat housing bolts.
  6. Remove the thermostat housing from the water pump.
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