Hello,
It sounds like the issue is with the blend door actuator.
The blend door actuator is what controls the air door for hot and cold air mix.
Many times, when the actuator fails, it will fail either in the hot or the cold side. Which will lead to no heat or no AC issues.
This vehicle has 2 blend door actuators, one for the drive and other for the passenger side.
The drive side actuator is located on the left side of the HVAC box which is located behind the instrument panel.
Here is a helpful guide:
https://www.2carpros.com/articles/replace-blend-door-motor
I have attached diagrams for your reference.
Please let me know if you have any questions.
Thank you.
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Monday, January 10th, 2022 AT 1:23 PM