How do you take a heater core out of a 1996 Hyundai Elantra?

1.If the vehicle is equipped with air conditioning,have the refrigerant discharged and recovered by a dealer service department or an automotive air conditioning shop 2.Disconnect the cable from the negative terminal of the battery 3.Set the heater control to 'HOT' and then drain the cooling system 4.Working on the engine compartment side of the firewall ,mark the heater hoses to ensure correct installation loosen the hose clamps and then disconnect the heater hoses from the heater core tubes.Plug the hoses to prevent dirt from entering the cooling system.Youll also see a vacuum line connected to a vacuum pipe at the firewall,right below the larger of the two heater hoses.Disconnect this line and plug it to prevent dirt and moisture from entering the line. 5.If the vehicle is equipped with air conditioning,disconnect the refrigerant lines from the evaporator connection tubes plug them too. 6.Remove the air conditioning and heater control assembly and the radio.Remove the instrument panel assembly 7.Disconnect the vacuum line from the door motor in the front of the blower assembly.Note the routing of this line between the door motor and the heater unit.When reassembling the under-dash heater and air conditioning it must be routed exactly the same way 8.If the vehicle is equipped with air conditioning remove the evapoator assembly 9.If the vehicle is equipped with cruise control,Electronic time and alarm control(ETAC)and/or keyless entry systems unplug the electrical connectors from the cruise control module,the ETAC module and/or the keyless entry module 10.Remove the bolts that attach the cruise control and the ETAC/keyless entry module brackets to the left vertical member of the center fascia panel support bracket 11.Remove the screws that attach the air conditioning and heater control assembly bracket to the heater control assembly bracket to the left vertical member of the center fascia panel support bracket 12.Remove the bolts that attach the right vertical member of the center fascia panel support bracket to the vehicle and then remove the right vertical member and the three horizontal support brackets as a single assembly 13.Peel back the carperting on the right side and then remove the bolts that attach the crossbar support bar to the vehicle and then remove the support bar 14.Peel back the crapeting on the left side.Detach the rear floor vent ducts from the rear floor vents and from the heater assembly and then pull each duct to the rear and remove it.(just pull out the ductrs through the surrounding foam-its not necessary to remove the foam). 15.Remove the mounting nut and bolt from the right side of the heater unit and remove the mounting nut from the upper left side 16.Remove the heater assembly from the vehicle 17.Disconnect the plastic vacuum hose from the metal vacuum line on the left side of the heater case 18.Disengage the heater core cover retaining clips from the heater case and then remove the heater core cover 19.Pull the heater core out of the case