Hi,
I believe you are referring to the mode door actuator. It is responsible for airflow direction.
If you look below, I attached the directions for replacing it. Once you replace it, it will require calibration. The last two pics are the directions for doing it. Note that pic 3 is if you have a scan tool to recalibrate. If you don't, go to pic 4.
Let me know if this helps.
Take care,
Joe
See pics below.
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Thursday, July 27th, 2023 AT 10:52 PM