* From the Engine: One hose connects to a fitting on the engine's water pump or a nearby port on the engine block. This is the supply hose, carrying hot coolant from the engine. It's usually the upper hose.
* To the Heater Core: This supply hose runs through the firewall to the heater core.
* From the Heater Core: A second hose, the return hose, connects from the other port on the heater core and runs back through the firewall to the engine. This hose carries the now-cooled coolant back to the engine. It's usually the lower hose.
* To the Engine: The return hose connects to the engine block or intake manifold. This is usually a lower port compared to the supply hose.
Important Note: Without a diagram specific to your 1995 Caprice, pinpointing the *exact* location on the engine is difficult. The location can vary slightly depending on engine type (e.g., V6 vs. V8). A repair manual or a visual inspection of your engine bay is recommended for precise identification. Be cautious when working with the coolant system as it is pressurized and contains hot liquid.
