Hi,
On most vehicles, this would indicate a faulty blend air door/air mixt actuator-related issue. However, and correct me if I'm wrong, this vehicle doesn't have dual climate control.
Instead, the air temperature entering the vehicle is controlled by a programmer which receives your request and then adjusts the temp as requested.
What I suspect is the controller isn't fully operational. So, here is what I suggest: Confirm the controller is responding correctly and isn't failing.
Take a look at the pics below. I provided the diagnostics related to the air temp programmer. Take a look through them and let me know if you are comfortable performing them.
Let me know.
Joe
See pics below.
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Tuesday, December 20th, 2022 AT 6:41 PM