At least that's what I think it is. Stock 2007 Yukon with I'm assuming the 4l60e trans. When I'm coming to a stop and stab the brakes a bit when almost completely stopped, or when stopping quickly, it's almost like something is "catching up" with the rest of the truck. Feels like I'm towing something and the weight catches up on the hitch for those of you that tow. It's not all of the time, but it has happened quite a bit in the last week or so since I've owned it. Curious if this is normal for these trucks. Again, this is happening when I'm almost stopped. Like 5mph and slower.