The Thermostat is located Under the Housing that your radiator Hose is connected to on the engine. You will need to Remove the Housing to get to the Thermostat:
REMOVAL & INSTALLATION
See Figures 1, 2, 3 and 4
With the engine cold, drain the cooling system.
Disconnect the radiator hose from the thermostat housing outlet.
Fig. 1: Use a pair of pliers to compress the spring clamp, then slide it up the hose and disconnect the hose from the housing
Remove the thermostat housing outlet and remove the thermostat.
Fig. 2: Remove the nuts/bolts securing the thermostat housing ...
Fig. 3: ... then remove the thermostat housing
Fig. 4: Once the housing is removed, the thermostat can be removed from the engine
Using a putty knife, clean the gasket mounting surfaces.
If the thermostat is equipped with a pin valve, be sure to install the thermostat with the pin facing upward.
Install a new thermostat the gasket, O-ring or sealant (as applicable). Always install the spring end of the thermostat facing the engine.
Tighten the thermostat cover-to-thermostat housing bolts to 9 ft. lbs. (12 Nm).
Connect the radiator hose to the thermostat housing.
Fill, then bleed the cooling system. Check for leaks.