Chosen Solution
My blend door actuator started clicking and was stuck on AC. I finally just replaced the actuator and now I have heat but I now only have heat. No matter what I set the temp setting to it just blows hot air out of all the vents on both sides, driver and passenger.
I would guess that there is still a problem with the blend door. If it were “clicking” I would think the actuator was attempting to move the door, but something was wrong with the drive. Or it could be that the actuator did not get installed properly.
