2008 GMC Envoy Owner's Manual - Page 235

To scan preset stations, press and hold the SEEK button for two seconds and the radio advances to the next preset station. If the button continues to be held down, the radio advances through the available preset stations. The display shows the selections. This function is inactive if the front seat passengers are listing to the radio. While a CD is playing, press the SEEK button to go to the next track on the CD. This function is inactive if the front seat passengers are listening to a CD. While a CD is playing in the six-disc CD player, press and hold the SEEK button for two seconds to go you to the next CD, if multiple CDs are loaded. This function is inactive if the front seat passengers are listening to a CD. Audio Steering Wheel Controls Theft-Deterrent Feature THEFTLOCK® is designed to discourage theft of your vehicle's radio. The feature works automatically by learning a portion of the Vehicle Identification Number (VIN). If the radio is moved to a different vehicle, it does not operate and LOCKED displays. When the radio and vehicle are turned off, the blinking red light indicates that THEFTLOCK® is armed. With THEFTLOCK® activated, the radio does not operate if stolen. If your vehicle has this feature, some audio controls can be adjusted at the steering wheel. They include the following: g (OnStar®/Mute): If your vehicle has OnStar®, press this button to interact with the OnStar® system. See the OnStar® System on page 2-48 in this manual for more information. If your vehicle does not have OnStar, press this button to silence the system. Press it again, or any other radio button, to turn on the sound. 3-101