Just started today and has happened several times and now has stopped. What was happening what once you got started down the road the warning would come on that the parking assist was off and the parking brake was on. We would pull over set the brake and then release and all would be fine until we got back in the Acadia and started off again after a short stop. It did it four times today and then just stopped. Each time it did it we didn't use the parking brake, basically never do unless it is on an incline. Anyone else have any thing like this happen?