2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 309

Audio System(s) Determine which radio the vehicle has and read the following pages to become familiar with its features. To minimize taking your eyes off the road while driving, do the following while the vehicle is parked: . Become familiar with the operation and controls of the audio system. Set up the tone, speaker adjustments, and preset radio stations. . { WARNING: Taking your eyes off the road for extended periods could cause a crash resulting in injury or death to you or others. Do not give extended attention to entertainment tasks while driving. This system provides access to many audio and non audio listings. For more information, see Defensive Driving on page 5‑2. Notice: Contact your dealer before adding any equipment. Adding audio or communication equipment could interfere with the operation of the vehicle's 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 3‑25 for more information. 4-85