Removal Procedure

Special Tools 

BO-38185  Hose Clamp Pliers

For equivalent regional tools, refer to Special Tools .

1. Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) .
2. Remove the exhaust manifold heat shield. Refer to EXHAUST MANIFOLD HEAT SHIELD REPLACEMENT (LTG) .
Fig 1: Radiator Outlet Hose
Courtesy of GENERAL MOTORS COMPANY
3. Remove the radiator outlet hose (1) from the engine coolant thermostat housing (2).
Fig 2: Engine Coolant Thermostat Housing Fasteners
Courtesy of GENERAL MOTORS COMPANY
4. Remove the engine coolant thermostat housing fasteners (3) and remove the engine coolant thermostat housing (2).
5. Discard the engine coolant thermostat housing seal (1).