Liklihood of internal promotion background check

Hey guys, I work for a really large company. Im worried because im 2 classes shy of a degree. The position I am in doesn't require one. In my initial application I put that I put my attendance dates. I have 5 years of college under belt, just didn't actually graduate. Im worried that they will do a background check for internal promotion and find out I didn't get actual degree. Maybe they will at least be able to see I attended 5 years worth of school? Does anybody know how this works?