Although natural obstacles could make it necessary to travel diagonally up or down a hill or steep incline, you should try to drive straight up or straight down.
Note:   Avoid turning on steep slopes or hills.A danger lies in losing traction, slipping sideways and possible vehicle roll over.Whenever driving on a hill, determine beforehand the route you can use.Do not drive over the crest of a hill without seeing what conditions are on the other side.Do not drive in reverse over a hill without the aid of an observer.
Apply just enough power to the wheels to climb the hill. Too much power will cause the tires to slip, spin or lose traction, and you could lose control of your vehicle.
When descending a steep hill, do not descend the hill in neutral. Avoid sudden hard braking to keep the front wheels rolling and to maintain your vehicle's steering.
Note:   If your vehicle has anti-lock brakes, apply the brakes steadily. Do not pump the brakes.
Note:   If your vehicle gets stuck driving on hilly or sloping terrain, it may be rocked out by shifting between forward and reverse gears, stopping between shifts in a steady pattern. Press lightly on the accelerator in each gear.
Note:   Do not rock your vehicle if the engine is not at normal operating temperature, as damage to the transmission may occur.
Note:   Do not rock your vehicle for more than a minute, as damage to the transmission and tires may occur or the engine may overheat.