In heavy snow, when pulling a load, or for additional control at slower speeds, shift the transmission to a low gear and shift the transfer case to LOW if necessary. Refer to "All-Wheel Drive Operation" in "Starting And Operating" for further information. Do not shift to a lower gear than necessary to maintain forward motion. Overrevving 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.