2. Drain the radiator.
3. Remove the heater hoses from the heater core.
4. Remove the upper and lower radiator hose.
5. Remove the nuts holding the heater core assembly in place.
6. Pull the heater core assembly out of the vehicle.
7. Reverse the steps to install the new heater core.
8. Make sure all connections are tight and secure.
9. Turn on the vehicle and warm up the engine.
10. Check for leaks around the heater core and hoses.
