I have a 2005 chevy uplander. Today I got into it and found out that the heater is only blowing in the back. I turned it up full blast and even tried the air conditioner and only the back blowers work. (The back works fine on all settings low and high) Does anyone have a clue what would cause this? We have had sub zero temps all week could something be frozen? It has been a week since I have driven it or even started it but it started fine. Any suggestions before I take it in?

 

I am assuming that yoyu have separate controls for front and back. If so it is possible that the front blower motor and or resistor is bad.

 

Any idea how much those cost to fix?