If the A/C and heat both work, then this is most likely just an issue with the mode door.
Here is a guide that will help with talking about this:
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
While there could be a couple things causing this, I am pretty confident to think that this is the actuator. So, let's change that out and I am attaching the instructions below on how to do this.
Please let me know what questions you have with this.
Thanks
Images (Click to make bigger)
SPONSORED LINKS
Wednesday, May 18th, 2022 AT 10:05 AM