2005 Chevrolet Silverado 3500 Pickup Owner's Manual - Page 127

Shifting In or Out of NEUTRAL 1. With the vehicle running and the engine at an idle set the parking brake. 2. Place the transmission into NEUTRAL (N). Shift the transfer case in one continuous motion into or out of the NEUTRAL (N) position. Use these switches to shift into and out of four-wheel drive. Recommended Transfer Case Settings Driving Conditions Normal Variable Severe Extreme Vehicle in Tow* Transfer Case Settings 2HI YES YES YES YES YES AUTO 4WD 4HI 4LO N Automatic Transfer Case The transfer case buttons are located to the left of the instrument panel cluster. *See "Recreational Vehicle Towing" in the Index for further information. You can choose among four driving settings: AUTO 4WD: This setting is ideal for use when road conditions are variable. When driving your vehicle in AUTO 4WD, the front axle is engaged, but the vehicle's power is sent to the rear wheels. When the vehicle senses a loss of traction, the system will automatically engage four-wheel drive. Driving in this mode results in slightly lower fuel economy than 2HI. 2-41