While at the dealer yesterday I had them check out why my back doors were hard to close causing the kids to slam the crap out of the door when exiting. It looks like both rear door check links were binding and had to be replaced. For those of you wondering, this is a check link, it's not a HUMMER but still shows what a check link is. http://www.youtube.com/watch?v=XudcrrOFPbM