How do you replace the thermostat Plymouth sundance?

To replace the thermostat in a Plymouth Sundance, first ensure the engine is cool and disconnect the negative battery cable. Then, drain the coolant from the radiator and remove the upper radiator hose connected to the thermostat housing. Unbolt the thermostat housing, remove the old thermostat, and clean the mating surfaces before installing the new thermostat with a new gasket. Reassemble by reversing the steps, refill the coolant, and reconnect the battery.