Cannot change air from floor to vent or defrost why?

SUTTON PILES

MEMBER
2 POSTS
1994 BUICK LESABRE
0.6L
6 CYL
2WD
AUTOMATIC
19,999 MILES

My A/C comes on but does not flow out the vents.

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Monday, March 22nd, 2021 AT 2:22 PM (Merged)

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

It sounds like you are having a problem with the blend door/re-circulation actuator.It is mounted to the HVAC unit under the dashboard.It's an electrical motor that opens/closes doors to move air throughout the ducts. Here is a tutorial showing what is involved in it's replacement:

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

I've attached a picture below of its description.Hope this helps and thanks for using 2CarPros.
Danny-

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Monday, March 22nd, 2021 AT 2:22 PM (Merged)

LESABRE15

MEMBER
1 POST
1989 BUICK LESABRE
3.8L
6 CYL
2WD
AUTOMATIC
260,000 MILES

The the panel vents on my car are stuck, I can't move them in any direction & the air just blows one way. Can't move them up or down nor side to side. How do I get them loosen or how do I replace them with new ones? If you can help me out, please advise me on what to do & if you know of a video for me to see please let me know. Please get back to me ASAP.

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Monday, March 22nd, 2021 AT 2:22 PM (Merged)

KEN L

MASTER CERTIFIED MECHANIC
42,909 POSTS

Hi Lesabre15,

It sounds like you have a vacuum line that has broken near the firewall, check this article for more info,

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Even though it is for defroster, the process is similar,

Let me know what you find,

Best, Ken

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Monday, March 22nd, 2021 AT 2:22 PM (Merged)