How do you change thermostat on a 2002 dodge stratus 2.4?

To change the thermostat on a 2002 Dodge Stratus with a 2.4L engine, first, ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator, then remove the upper radiator hose from the thermostat housing. Unbolt the thermostat housing, replace the old thermostat with a new one (making sure the gasket is properly seated), reassemble the housing and hose, refill the coolant, and reconnect the battery. Finally, run the engine and check for leaks.