With the AC running, when I put the controls to feet only, the air blows out the feet, but when I set it to blow on the face only or defrost, it blows on the feet. What is the problem? I do not hear a vacuum noise when changing the setting.
Why won't the air blow out of the feet or face or defrost according to the contr on 2002 Pontiac Sunfire
check your blend door actuator