telitster

My 2001 LeSabre air control unit works but the elecrtronic "switch" to change it from your feet to the vent or defrost does not work. It changes back and forth when it gets the desire to move no matter where you have it set. Is this the heater door blend actuator, or something else? And how do I fix it?:banghead:

The floor & defrost are the default position, you may have a vacuum leak so, you should check all vacuum hose & fittings under the hood/dash first.