Welcome to 2CarPros.
Since we know the system is working because it works on one side but not the other, my first suspect is a blend air door issue. The blend air door is what controls the air temp entering the vehicle.
You will need to get under the dash to replace it. If you look at picture 1, it shows location. Locate number 1 on the picture and that is the actuator for the left side of the vehicle.
Here are the directions specific to your vehicle for replacement
____________________________________________________________
AIR TEMPERATURE ACTUATOR REPLACEMENT - LEFT
REMOVAL PROCEDURE
1. Remove the I/P insulator panel.
Pic 2
2. Disconnect the electrical connector (1) from the left air temperature actuator (2).
3. Remove the screws from the left air temperature actuator (2).
4. Remove the left air temperature actuator (2) from the HVAC module assembly (3).
INSTALLATION PROCEDURE
pic 2
1. Install the left air temperature actuator (2) to the HVAC module assembly (3).
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the screws to the left air temperature actuator (2).
Tighten
Tighten the screws to 2 N.M (18 lb in).
3. Install the electrical connector (1) to the left air temperature actuator (2).
4. Install the I/P insulator panel.
5. Reprogram the air temperature actuator. Refer to Re-Calibrating Actuators. See: Heating and Air Conditioning > Component Tests and General Diagnostics
_______________________________________
Let me know if this helps.
Take care,
Joe
Images (Click to make bigger)
Friday, April 30th, 2021 AT 12:26 PM
(Merged)