In heavy snow, when pulling a load, or for additional control at slower speeds, shift the transmission to a low gear and shift the 4WD system to the appropriate terrain mode, using 4WD LOW if necessary. Refer to "Four- Wheel Drive Operation" in "Starting And Operating" for further information. Do not shift to a lower gear than necessary to maintain headway. Over-revving the engine can spin the wheels and traction will be lost.
Avoid abrupt downshifts on icy or slippery roads because engine braking may cause skidding and loss of control.