AC problem

[BlackBearYukon]

Air only blows out of the defrost vents no matter what setting the hvac control panel is set to. I can change the air speed and possibly the temp not sure. any suggestions??

 

[SunlitComet]

while you change the directions look at the control rods on the hvac housing just above and to right of gas pedal for movement.

 

[BlackBearYukon]

if there is no movement what do i do

 

[SunlitComet]

tell me what year you have so i can pull up diagram for further testing and fault isolation.

 

[BlackBearYukon]

96 yukon

 

[SunlitComet]

disconnect plug on it and probe white wire for voltage that changes when you move mode knob report results here. use the black wire for a ground on probe.

 

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Will this work for my 2004 Chevy Tahoe, I am experiencing the same problem only blowing through defrost vent.

 

[SunlitComet]

no your vehicle is different. post your issue here. https://www.tahoeyukonforum.com/forums/general-discussion.20/