Engine temp is fine, a/c ran super cold 1 day ago. Day later I started the car, 85° outside, noticed the cooling fan started running, once I got into yukon I tried the a/c and the light blinked 3 times and shut off, same happened with the recirc. I tried the other controls and the only selection that works is Auto. The defrosters work fine but can select anything besides Auto. All air that comes out of vents is hot. I cannot find any other search inquires that deal with engine fan constantly running and the AC / recirc blinking.