How do you change water pump on SATURN 2002 l200?

To change the water pump on a 2002 Saturn L200, first ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator and remove the drive belt. Next, remove any components obstructing access to the water pump, such as the engine cover, and then unbolt the water pump from the engine block. Clean the mounting surface, install the new water pump with a new gasket, reassemble any removed components, refill the coolant, and reconnect the battery.