2. Locate the heater core box, which is usually found under the dashboard on the passenger side.
3. Remove the screws holding the heater core box in place and carefully remove it from the vehicle.
4. Remove the heater core from the box by carefully prying it out with a flat-head screwdriver.
5. Inspect the heater core for damage or leaks. If it is damaged, it will need to be replaced.
6. If the heater core is in good condition, reinstall it into the box and carefully reinstall the box into the vehicle.
