2002 GMC Envoy Owner's Manual - Page 211

Adjusting the Speakers AUDIO (Balance/Fade): The AUDIO control adjusts balance and fade. To adjust balance, press the AUDIO control until BAL appears on the display. Turn the control to adjust the sound to the left or right speakers. The middle position balances the sound between the speakers. To adjust fade, press and hold the AUDIO control until FAD appears on the display. Turn the control to adjust the sound to the front or rear speakers. The middle position balances the sound between the speakers. To set the balance and fade to the middle position, select balance or fade and press and hold the AUDIO control. The radio will beep once and will set the display level to the middle position. To set all tone and speaker controls to the middle position, press and hold the AUDIO control when tone or speaker controls are not active. The radio will produce one beep and CENTERED will appear on the display. Using RDS Your audio system is equipped with a Radio Data System (RDS). RDS mode gives you many useful new features. With RDS, the radio can do the following: D Seek only to stations with the types of programs you want to listen to, D seek to stations with traffic announcements, D receive announcements concerning local and national emergencies, and D receive and display messages from radio stations. RDS features are only available for use on FM stations which broadcast RDS information. The RDS features of your radio rely upon receiving specific RDS information from these stations. These features will only work when the RDS information is available. In rare cases, a radio station may broadcast incorrect information that will cause the radio features to work improperly. If this happens, please contact the radio station. When you are tuned to an RDS station, the station name will appear on the display, instead of the frequency. Most RDS stations provide their station name, the time of day and a Program Type (PTY) for their current programming. 3-37