Heater doesnt blow cold air on 2004 Dodge Stratus

Fan runs at all speeds, but no heat.. Is there a switch that operates the heat/cooling in the car? a/c works great just wont switch over to heat.

Asked by for the 2004 Dodge Stratus
These cars have a blend air door that controls the amount of airflow through the heater core, if the door stops working you wont have any cooling or heat, depends on where the door sticks.
There is a technical service bulletin (TSB) from Dodge that helps to determine what the problem is with the system, have your repair shop look at TSB 24-002-04 REV. A
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