How do you replace heater core 1998 Chevy lumina?

Answer 1

To replace the heater core in a 1998 Chevy Lumina, first, disconnect the battery and drain the coolant from the radiator. Remove the dashboard and the center console to access the heater core. Disconnect the heater hoses from the core, unbolt it from the housing, and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.