More than likely Mike, your water shut-off valve to your front heater core is broken. You can check this reletively easily. The valve is located on the left side (as your looking under the hood) of the firewall in the bottom heater hose. You will see a control cable that comes through the firewall and hooks to the lever. Slide the cable off the lever. If the lever and the screw on top of it don't move together, it's broken. You can get heat by using a phillips screwdriver to turn the screw on top clockwise. You will have to get the valve replaced if you want heat and a/c without manually working the valve with the screwdriver. Hope this helps you.