Climate heater valve

Hello, I'm Danny.

It sounds like you have a failed or defective blend door actuator. It's a small electric motor that opens a door to direct hot air throughout the various air ducts in the HVAC box. Here is a tutorial showing what is involved for the blend door actuator replacement:

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

I've attached picture steps below for the blend door actuator replacement on your vehicle. Hope this helps and thanks for using 2CarPros.