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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 412 (Engine Cooling System) >> Repair Instructions >> Thermostat Housing Replacement (4.8L, 5.3L, and 6.0L Engines) >> Removal Procedure

Removal Procedure

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IMPORTANT: The thermostat is not serviceable separately. The thermostat housing (water pump inlet) and thermostat must be replaced as an assembly.
    Fig 1: View Of Water Pump Inlet
    GM370076Courtesy of GENERAL MOTORS CORP.
  1. Remove the radiator outlet hose. Refer to Radiator Hose Replacement - Outlet (4.8L, 5.3L, and 6.0L Engines)  or Radiator Hose Replacement - Outlet (Utility 8.1L Engine)  or Radiator Hose Replacement - Outlet (Avalanche/XLT 8.1L) .
  2. Remove the water pump inlet bolts.
  3. Remove the water pump inlet from the water pump.