Mine gives me that message anytime I kind of peel out like applying to much gas from a stop and turn. It happens about once a month. Once service advance track is displayed the hill assist will always follow with a delay. Since I have 37s I figured there no correcting the issue so I don’t pay attention. I always finish my drive and it resets itself when you shutoff. Dealer would be of no help to me I’m sure with larger tires. Also with dually and the scrub radius I’m sure that difference in wheel speeds is more pronounced. I don’t worry about it but please do post anything you learn if you do ask your dealer, I would like to know more