[STEELCITYFIREBIRD]

I have a 2002 Volkswagen Passat with a 2.8 V6 engine. I can’t get the air out of the cooling system,Specifically the heater core. I know about the hole in the heater hose that you let air out from but for some reason I can’t get all the air out. Cooling system is spotless, I have no idea how the flow works in this system so I don’t know how to force flow through the heater core to remove air. I’ve search the net And tried all kinds of different stuff. Nothing has worked.I don’t know if there’s any other bleeders anywhere but I’m tired of going out to my car and it being freezing in the morning ...even after I heated up. When the car is in motion/ rpms up I do get coolant flow to the heater core and have very good heat. The heater core is the highest point in the cooling system.
Help?