I have a 2010 Ram 1500 with the auto air controls. I can leave it on high setting on manual and the air will come on and blows full speed for about 30 seconds, then it kicks down to low for about 5 minutes, and then will come back up to high speed. And then it will work perfectly on any setting until you turn truck off. It does thos same thing every time. Hoping someone else has experienced this and can help me out.