Follow your upper radiator hose to where it connects to the engine. It connects at the thermostat housing where the thermostat is located. It's not difficult but you need to be sure you clean the gasket surfaces thoroughly to avoid any leaks. You will lose some coolant when you remove the thermostat housing so be sure to properly refill the cooling system. If this link works, it shows a picture of the cooling system http://bit.ly/qNaL1 hope this helps!