There is a difference. The cover was missing from my 2011 acadia when I bought it a month ago. The dealership said they would order the part for me, and have it shipped to my house. When I received the part, I found out that they ordered part number 15933983...long story short, it's the wrong part. It's the same basic shape as the one that I would need, but it actually installs differently than the other one. I have to sell the one that I received and order the #19244180. Correct me if I'm wrong, but 15933983 (the one I have) only has tabs to install, where as the 19244180 has tabs and a twist/lock tab or "button" to secure it.ts2007 said:Need to replace my trailer hitch fascia cover. Part Nebraska stamped into the original is 15933983, but it's going for around $40~ + shipping now. When I just google the description only (no part #) I find a part listed for 2010-2013 models part #19244180 and they go for $28-30~. Anyone know if there's really any difference from '07-09 vs '10-13? They sure look the same in the photos and in person. I'd be happy if I found a used one; the color fading would probably match better than a new one.