What cause your air not to work in the front and jus blow out heat? But workf fi

If the vehicle has dual zone A/C, this could be a lot of things. Most commonly it is something called a blend door assembly. If you change settings on which vents to blow out, you may hear a loud repeating click in either the dash or the right rear of the vehicle, unless the blend door actuator is completely dead. This is the most common cause of this problem, followed by restrictions in the secondary condenser located in the right rear of the vehicle behind the wheelwell interior trim. Hope this helps!