Hello, since it cools i assume both sides cool but little airflow from both sides. below are the actuators. All are different locations
I will give info on replce one we know which one
Actuator Description The HVAC system uses four actuators to adjust temperature and air distribution.The actuators are:
The actuators are specifically designed for the right and left side of the heater and the A/C module. When servicing the actuator, ensure that you replace the actuator with the correct service part for the position being serviced.The reversible DC motor in the actuator operates the valve within the HVAC module.The actuators contain a feedback potentiometer that informs the IPM of the valve position.
Here are direction for drivers actuator. You can always pull it, leave plugged in and check movement and be sure to see if gear is stripped on end. Also, while out, be sure you work the door to be sure no binding etc..
Air Mix Actuator Replacement - Driver (LHD) REMOVAL PROCEDURE