Unfortunately, it looks like I too have the seat movement issue. I got the truck June 9th and have 2000 miles on her; build date 12/13. As others have noted, the movement is taking place at the white plastic "brackets". I just checked on the website: https://recalls.gm.com/#/ and a do not yet have the above recall. If the recall only addresses a poor weld issue I don't see how its going to fix my seats, since the issue is with the brackets as with many others on this thread. Its too bad my first post on this site has to be a negative one. Aside from several recalls and the seat issue I really love this truck and hope to have it for a very long time. I have not contacted the dealer yet as I am hoping to get more info on a fix from this site. I read this entire thread and do not see an definitive fix that can be completed by the dealer. I want them to fix it and fix it right.