When you cut the heater on the vent blows out cold air. There is not heat in the car at all. No defrost.
Why does my car blow out cold air and no heat? on 2000 Chrysler Town & Country
blend door actuator issues, seek diag and est
What does diag and est mean?
take car to mech to have an inspection
Could be due to faulty thermostat or low coolant level. possibly clogged heater core.In agreement with previous answer, do some diagnosing first before spending money on parts though.