2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 182

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 N (Neutral). Shift the transfer case in one continuous motion into or out of the N (Neutral) position. Recommended Transfer Case Settings Transfer Case Settings 2m 4m 4n N Normal YES Severe YES Extreme YES Vehicle in Tow* YES *See Recreational Vehicle Towing on page 5‑49 or Towing Your Vehicle on page 5‑48 Driving Conditions 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 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. Electronic Transfer Case The transfer case knob is located next to the steering column. Use the dial to shift into and out of four-wheel drive. 3-44