2010 GMC Acadia Owner's Manual - Page 190

7-2 Infotainment System For more information, see Defensive Driving on page 9‑2. 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 9‑19 for more information. Operation Navigation/Radio System For vehicles with a navigation radio system, see the separate Navigation System manual. 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. Radio with CD, Radio with CD/USB similar