2012 GMC Sierra Owner's Manual - Page 212

7-2 Infotainment System Notice: Contact your dealer before adding any equipment. Adding audio or communication equipment could interfere with the operation of the engine, radio, or other systems, and could damage them. Follow federal rules covering mobile radio and telephone equipment. The vehicle has Retained Accessory Power (RAP). With RAP, the audio system can be played even after the ignition is turned off. See Retained Accessory Power (RAP) on page 9‑29 for more information. To minimize taking your eyes off the road while driving, do the following while the vehicle is parked: . Navigation/Radio System For vehicles with a navigation radio system, see the separate Navigation System Manual. Become familiar with the operation and controls of the audio system. Set up the tone, speaker adjustments, and preset radio stations. Theft-Deterrent Feature TheftLock® is designed to discourage theft of the vehicle's radio by learning a portion of the Vehicle Identification Number (VIN). The radio does not operate if it is stolen or moved to a different vehicle. . For more information, see Defensive Driving on page 9‑3.