Hi, My Deville from 87 is not giving me any heat at all. Here are the details. Durring the summer time I had to replace the waterpump (so they tell me) after that my radiator fan was not working so thae car was overheating, what I did is I connected the fan (radiator fan) to my low beam, and everytime I was driving I was puting my light on, so the fan was working everything was good. Now the winter came and I notice that my enagine is cold always, I mean it gives me NO heat at all! If you have any ideeas let me know!