So heres my problem, my heat is stuck on hot only on the driver side vents, i have replaced the lower actuator which controls this and it will work for about a day and go right back to sticking on hot. I put the old actuator back in and it does the same thing. Each time i disconect the battery thinking i may be clearing a code in the system. Right now im thinking i could have some loose terminals on the plug going to the actuator. When i connect the battery and have the actuator off i can see it cycle when i turn the key on. But sometimes it doesent do anything unless i half way unplug it or hold pressure on it. Any thoughts guys

 

Is this an H2?

On my H2 I had this happen and it was the controller. not sure how but that is what fixed it.

 

yea h2, are you talking about the head unit?