2008 GMC Envoy Owner's Manual - Page 202

Radio Data System (RDS) The audio system has a Radio Data System (RDS). RDS features are available for use only on FM stations that broadcast RDS information. With RDS, the radio can do the following: Playing the Radio PWR (Power): Push to turn the system on and off. op VOL or VOLUME: Turn clockwise or counterclockwise to increase or to decrease the volume. DISPL (Display) or INFO (Information): While the ignition is off, press the DISPL or INFO knob to display the time. For RDS, press the DISPL or INFO knob to change what displays while using RDS. The display options are station name, RDS station frequency, PTY (program type), and the name of the program (if available). For XM™ (if equipped), press the DISPL or INFO knob while in XM™ mode to retrieve four different categories of information related to the current song or channel: Artist, Song Title, Category or PTY, Channel Number/Channel Name. To change the default on the display, press the DISPL or INFO knob until you see the desired display, then briefly press and hold the knob until a beep is heard. The selected display becomes the default. • Seek to stations broadcasting the selected type of programming. • Receive announcements concerning local and national emergencies. • Display messages from radio stations. This system relies upon receiving specific information from these stations and only works when the information is available. In rare cases, a radio station can broadcast incorrect information that causes the radio features to work improperly. If this happens, contact the radio station. While the radio is tuned to an RDS station, the station name or call letters display instead of the frequency. RDS stations can also provide the time of day, a program type (PTY) for current programming, and the name of the program being broadcast. 3-68