How do you flushing a heater core on a 2000 jeep Cherokee?

To flush the heater core on a 2000 Jeep Cherokee, first ensure the engine is cool and disconnect the negative battery cable. Locate the heater core hoses on the firewall, detach them, and use a garden hose to flush water through the core in both directions until the water runs clear. Reconnect the hoses, refill the cooling system with the appropriate coolant, and run the engine to check for leaks and proper operation. Always dispose of any old coolant properly.