2008 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 132

4 n(Four-Wheel-Drive Low): This setting also engages the front axle and delivers extra torque. You may never need Four-Wheel-Drive Low. It sends maximum power to all four wheels. You might choose Four-Wheel-Drive Low if you are driving off-road in deep sand, deep mud, deep snow, and while climbing or descending steep hills. When operating in Four-Wheel Low, the gear ratio provides additional torque when compared to Four-Wheel-Drive High. The transmission gear shift feel is exaggerated. A parking brake symbol is located next to the N (NEUTRAL) symbol as a reminder to set the parking brake before shifting the transfer case in Neutral. {CAUTION: Shifting the transfer case to NEUTRAL can cause your vehicle to roll even if the transmission is in PARK (P). You or someone else could be seriously injured. Be sure to set the parking brake before placing the transfer case in NEUTRAL. See Parking Brake on page 2-50. N (NEUTRAL): Shift to this setting only when your vehicle needs to be towed. See Recreational Vehicle Towing on page 4-50 or Towing Your Vehicle on page 4-50. 2 m(Two-Wheel-Drive High): This setting is used for driving in most street and highway situations. The front axle is not engaged in two-wheel drive. This setting also provides the best fuel economy. 4 m(Four-Wheel-Drive High): Use this setting when you need extra traction, such as on snowy or icy roads or in most off-road situations. This setting also engages the front axle to help drive your vehicle. This is the best setting to use when plowing snow. 2-38