Sometimes when I drive my Jeep and I have my heat on and both the passenger side and driver side is set to 78 degrees, the driver side will start blowing cool air while the passenger side is blowing out hot air. I took it to the dealership but the problem never happens for them but they checked some forums and they said to replace the door actuator, which they did on my Jeep, but I am still having the issue. It is never consistent and it happens sporadically. Can anyone help me with this issue????