Oh sorry...this is cruising 70mph on a double lane road. That's the only time I use the cruise. I could not use it on any other road around here. (most are gravel YECH). Anyway, no the truck don't even downshift it just seems to surge several times after topping a crest in the road...really any crest when the cruise would "let off the gas" the truck will surge a few times before settling down.
Rob