AC not blowing from the front vents

2012 GMC ACADIA
67,000 MILES • V6 • 2WD • AUTOMATIC
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ALL4LO
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Air is blowing from all vents except the ones in the front. Nothing is coming from them at all.
May 30, 2017 at 7:04 AM
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STRAILER
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Hello,

It sounds like you have a blend door actuator that has failed which is common on these cars. Here is a diagram (below) and a guide to help you get the problem fixed:

https://www.2carpros.com/articles/replace-blend-door-motor

1 - Mode Actuator

2 - Recirculation Actuator

3 - Blower Motor

4 - Blower Motor Control Module

5 - Air Temperature Actuator

6 - Evaporator Temperature Sensor

Please let us know what happens.

Cheers, Ken

Jun 1, 2017 at 11:53 AM
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WRENCHSLINGER
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My rear blows fine but the front does nothing. I checked both actuators are working and the fuse is fine. I tried resetting the HVAC/ECAS by disconnected the battery but no change. Any other ideas would be very helpful. Thank you
Sep 9, 2018 at 12:55 PM
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STRAILER
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Hello,

There is an HVAC blower fuse that need to be checked for power, if that is good lets check the blower motor for power and ground. Here is a guide that will help also here are the blower motor and AC wiring diagrams so you can see how the system works and the fuse locations below:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

and

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please run this test and get back to us.

Cheers, Ken
Sep 9, 2018 at 1:45 PM