Posted to GM HVAC on 5/4/2012 3 Replies

2009 gmc g3500 middle and left side vents blow hot air while the one far right blows ice cold air, local dealer reset hvac system. It only has one hot/ cold actuator our dealership says. I can remove the actuator and close the door and still no change. Is ther...

FIX posted 5/4/2012