How do you change thermostat in 2000 Chrysler cirrus 2.4?

To change the thermostat in a 2000 Chrysler Cirrus with a 2.4L engine, first ensure the engine is cool, then disconnect the negative battery cable. Drain the coolant from the radiator, and remove the upper radiator hose connected to the thermostat housing. Unbolt the thermostat housing, replace the old thermostat with a new one, ensure the gasket is in place, and reassemble all components. Finally, refill the coolant, reconnect the battery, and check for leaks.