When I picked up my Blazer I noticed the panel that covers the trailer hitch was loose on one side where the tabs go into the bumper. On a subsequent trip at a stop I noticed the panel was completely off at the top where the 3 tabs are and held only by the two bottom fasteners. I removed it to make sure I didn't lose it on the road. The dealer ordered a new valence (?) for me and now it fits fine and is very sturdy. Wanted to share in case anyone else has the same issue.