My husband and I just bought a 2015 Sierra Denali 2500 brand new a week ago. We previously had a 2012 Ford Lariat F-350. The Ford always had a rough ride and I hated it. We test drove the Denali and absolutely fell in love with the ride. My husband wanted the leveling kit put on it just because he didn't like the slight slant. We had it done and picked it up yesterday. The ride is now horrible (worse than the Ford was). Every little bump makes the front end bouncy. I have an appointment to have the leveling kit removed on Monday. Lesson learned. Read before I buy.