Vincesrg03
Full Access Member
Hello everyone I am new to the forum, but have come to the site many a time for help fixing my Yukon. Hope someone can help me out before i gotta dish out some cash to a mechanic or (gulp) the dealer. I have an 03 Yukon SLT with rear heat and ac. Only cold air was blowing out the vents, so i went on the forum and saw that alot of people were having the same issues. Many said to replace the blend door actuator. I removed the panels and checked the actuators. The one that controls the vents worked fine, but the one that controls the temp seemed stuck. So i removed it and replaced it. It seemed to work when i first installed it, then it did the same thing and went to cold only. I removed the vent actuator and put the new one i bought on and it worked fine on there, also put the original temp actuator on the vent door and it also worked fine. Could it be a sensor or the control panel. Checked all the wiring and probed it and it looks good. Its cold up here in Illinois so for now i left it on heat. Could really use some help on this. Thanks