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GMC
Acadia
Climate Control
Blend Door Actuator
Replace/Remove
Blend door actuator
2011 GMC ACADIA
75,000 MILES
RALPH BAKER
MEMBER
1 POST
Only blows air from upper dash vents can't change but can switch rear on and off.
Dec 27, 2018 at 11:03 PM
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ASEMASTER6371
✓
Experienced Mechanic
52,796 POSTS
Good morning,
It sounds like you need a mode door actuator as that controls the movement of the mode door. this is a very common failure.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
It is located behind the glove box on the passenger side.
Roy
Images (Click to enlarge)
Dec 28, 2018 at 12:44 AM
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