Where is the thermostat and temperature sensor located?

The thermostat is part of the radiator outlet hose assembly. Part 25205818 is the current updated version. There are two temperature sensors. One is in the bottom of the radiator while the other is on top of the engine where the primary water outlet connects to the cylinder head. Both of the temperature sensors are held in with clips. You drain the coolant, then remove the clip and pull the sensor out. Then disconnect it. Apply a light coat of silicone grease to the O-Rings on the new sensors and push them back in while gently twisting them. Install the clips and reconnect. Refill and burp the cooling system or use a vacu-fill type system to avoid air pockets.