How do you replace heater core for 2001 Hyundai Elantra?

Answer 1

1. If the vehicle is equipped with A/C have refrigerant discharged 2. Disconnect the negative battery cable 3. Set the heater control to HOT and then drain the cooling system 4. Working in engine compartment mark the hoses to ensure correct install. Loosen the hose clamps and disconnect the heater hoses from heater core tubes. Unplug the vacuum line 5. If equipped with A/C disconnect the refrigerant lines from the evaporator connection tubes 6. Remove the A/C and heater control assembly and the radio. Remove the instrument panel assembly 7. Disconnect the vacuum line from the door motor in front of blower assembly 8. If equipped with A/C remove evaporator assembly 9. If equipped with cruise control, electronic time and alarm control, keyless entry system unplug the electrical connectors from the cruise control module, ETAC module and keyless entry module 10. Remove the bolts that attach the cruise, ETAC/keyless entry module brackets to the left vertical member of the center fascia panel support bracket 11. Remove the screws that attach the A/C and 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 carpet on the right side and then remove the bolts that attach the crossbar support bar to the car and then remove the support bar 14. Peel back the carpet on left side. Detach the rear floor vent ducts from the rear floor vents and then pull each duct to the rear and remove it 15. Remove the mounting nut and holy from the right side of heater unit and remove the mounting nut from the upper left side 16. Remove the heater assembly from the car 17. Disconnect the plastic vacuum hose from metal vacuum line on the left side of heater case 18. Disengage the heater core cover retaining clips from heater case and then remove the heater core cover 19. Pull the heater core out of case