How you replace a heater core for a suzuki forenza?

To replace the heater core in a Suzuki Forenza, start by disconnecting the battery and draining the coolant from the system. Next, remove the dashboard and the center console to access the HVAC unit, then disconnect the hoses attached to the heater core. Remove the mounting screws or clips securing the heater core, replace it with the new unit, and reassemble everything in reverse order, ensuring all connections are secure before refilling the coolant and reconnecting the battery. Finally, check for leaks and test the heating system.