How do you replace heater core in 1993 Corsica and where is it located?

To replace the heater core in a 1993 Chevy Corsica, first, you'll need to disconnect the battery and drain the coolant from the radiator. The heater core is located inside the dashboard, so you must remove the dashboard assembly and the center console to access it. Disconnect the hoses connected to the heater core, remove the mounting screws, and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.