Periodically I will climb in my Yukon, close the door and press the start button with the key fob in my pocket. The horn will beep 3 times in quick succession then the vehicle will start. I can't figure out what's going on here, and wondering if the vehicle isn't recognizing my key fob or if there is some other glitch going on. I don't have the alert set to beep 3 times when the key fob isn't still in the vehicle, or anything else that I can think of. Anyone else have this happen?