Heat door Location

[sofa]

It is now really cold and snowing heat must go on lol. Can somone tell me where the heat door/tempuature control is located in the aleros duct work. Is it directly behind the radio cluster? and if anyone knows is it controled by vacuum or electronics? Thanks for ur help

[Frank3]

A Temperature actuator is used to modulate the temperature/heat door. It appears to be electrically operated by what I see in the FSM.

[sofa]

Thanx man..i ended up finding it.

[super white alero1]

the actuator is vacuum control located behind the glove box. The dealer call this the temperature actuator. Make sure you tell them this or you might get the mode door actuator which control the vent and not the temperature.