Where does the heater hose go on 1989 Oldsmobile Calais?

On a 1989 Oldsmobile Calais, the heater hose connects to the heater core, which is located inside the vehicle's dashboard. The two hoses run from the engine's cooling system; one hose typically connects to the water pump or intake manifold, while the other connects to the thermostat housing or engine block. Ensure that the hoses are securely attached and free from leaks for proper heating system function.