It could very well have been the reverse no a c on the driver side as the problem turned out to be a faulty driver s side blend air door actuator assembly.
2009 chevy impala blend door actuator driver side.
Get your chevrolet impala bleed door actuator here https amzn to 2a73mcs another throwback video.
Otoh if you have dual controls i m pretty sure you need the actuator on the driver s side.
There was a code b0408 stored for the that actuator.
Fwiw the two hot cold actuators and the recirc actuator are all the same part type while the mode selector is different.
Actuator temp vlv acdelco 15 73517.
I told the customer that i would not be able to get to it continue reading 2009 chevrolet silverado driver s side air stuck on heat.
Recirc and temp controls 1 2.
This 2009 chevrolet silverado came in with the complaint that the a c was blowing out hot air on the driver s side of the dash the vent temperature was 140 f and the outside air temperature was 97 f in august in sunny south carolina.