I have a 06 F250 and the A/C blows cold but the heater just blows warm air. Just bought the truck and it was working when I test drove it. Also does anyone know where I can find the stock keyless code for the driver door to reset it.

 

Can you hear the blend doors moving when you move the dash controls? Feel your heater phones and make sure you are getting water same temp as lower radiator hose when running after well warmed up.

 

Thanks adrenaline junkie. Changed the blend door actuator and it is all good now.