Blend door actuator

Tiny
RALPH BAKER
  • MEMBER
  • 2011 GMC ACADIA
  • 75,000 MILES
Only blows air from upper dash vents can't change but can switch rear on and off.
Friday, December 28th, 2018 AT 7:03 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
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Friday, December 28th, 2018 AT 8:44 AM

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