2009 Chevrolet Silverado 2500 HD Extended Cab Owner's Manual - Page 141

Electronic Transfer Case The transfer case knob is located next to the steering column. You can choose among four driving settings: Indicator lights in the dial show which setting you are in. The indicator lights will come on briefly when you turn on the ignition and one will stay on. If the lights do not come on, you should take the vehicle to your dealer/retailer for service. An indicator light flashes while shifting the transfer case and remains illuminated when the shift is complete. If for some reason the transfer case cannot make a requested shift, it will return to the last chosen setting. 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. Use the dial to shift into and out of four-wheel drive. Recommended Transfer Case Settings Driving Conditions Normal Severe Extreme Vehicle in Tow* *See Recreational Vehicle Towing on page 4-45 Towing Your Vehicle on page 4-45 Transfer Case Settings 2 m 4 m 4 n N YES YES YES YES 2-41