Just picked up the Acadia and they had to order new seat mounting bolts for the drivers seat; apparently the seat bolts are "stretched" and can't be tightened. They ordered new bolts, but won't be in till next week. What happens is under heavy braking or acceleration; the drivers seat will rock approximately 1/4 inch! It's a little unnerving especially when you are braking heavily. I wanted to see if anyone has experienced this problem.