I was test driving an 08 silverado 4x4 2500 hd 6.0 last night and had trouble getting into low range and when I did it seemed to slip and. Rev out it has a manual shifter on floor, just wondering if its a common problem or was it me being not used to chevs, it happened on a different truck as well , wanna make sure the dealer isn't trying to pull one over on a dumb redneck tbd for your info