Thermostat: Service and Repair

Engine Coolant Thermostat Replacement (LY7 - Gas, 6 Cyl, 3.6L, SFI, V6, Alum, 60 Degrees)

Removal Procedure





1. Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill) (Service and Repair).
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.



Installation Procedure





1. Install the thermostat (2) with a NEW thermostat gasket.

Notice: Refer to Fastener Notice (Fastener Notice).

2. Install the thermostat housing bolts (1).

Tighten the thermostat housing bolts to 10 N.m (89 lb in).

3. Install the surge tank outlet hose.
4. Install the heater inlet and outlet hoses.
5. Install the radiator outlet hose to the thermostat housing.
6. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill) (Service and Repair).