HVAC control not working

GULFCOURSE1

MEMBER
2014 CHEVROLET CAPTIVA
2.4L
4 CYL
2WD
AUTOMATIC
80,000 MILES

I can no longer adjust the temperature in my car (LTZ model) no matter if I am in or out of the auto mode. It seems I can only get air to flow through the defroster using full defrost the rest of the time air goes through the AC vents.
In auto mode if I turn the temperature either way to the far right or left the fan goes full speed blowing out cold air.
The fan switch works on in either mode.
I am wondering if replacing the entire control unit is what I need to do or if the problem could be something else?

https://www.gmpartscenter.net/oem-parts/gm-control-asm-htr-and-a-c-w-d-seat-and-p-23111247?origin=pla&gclid=Cj0KCQjw2f7bBRDVARIsAAwYBBtMMxDOxWTJtQUL6sdll8CJMlcpdrNDF4dICT2Pa1wqRs1yBE0HC0waAhbCEALw_wcB

I hate to spend the money on the unit if it will not fix the problem.
Thank you.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,526 POSTS

Hello,

It sounds like you have a mode blend door actuator that is no longer working which is common. Here is a guide to show you step by step how to do the job and a diagrams below to show the location of unit in you car:

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

I have seen a direct replacement work perfect but if not you will need to have the actuator initialized at a shop for about $130.00 Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

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