I do not have lane departure. A GM engineer consulted with my dealer, they said there (as someone else indicated) clips on the front of the seat, the rod is lubricated so there is some movement to allow for the power seat.
But, Jennifer is kindly checking for other solutions or a fix, since it is a bit disconcerting occasionally when it moves during braking or cornering.
I have not had any other issues, and I love the truck. They did a great job overall, and issues or no worse than Lexus/Toyota or Fords that I have had, I would say much less so far.