When I am in 2wd the front end acts like I have the front brakes on, when on gravel the rear wheels spin when driving. And if I let of the gas the front end goes way down and slows me way down like I have hit the front brakes really hard until about 3 mph, then it free rolls. So I put it in 4wd drive and everything is the same except that it tones it down alot, it acts like normal until around 14 mph and then starts slowing me down fast but the front end does not go down like in 2wd and I do not slow down as fast as in 2wd. It is also hard to steer. What could be my problem? I am leaning towards the adc staying engaged or something.