2003 GMC Envoy Owner's Manual - Page 209

Using RDS Your audio system is equipped with a Radio Data System (RDS). RDS features are available for use only on FM stations that broadcast RDS information. Using this system, the radio can do the following: Seek to stations broadcasting the selected type of programming, receive announcements concerning local and national emergencies, display messages from radio stations, and seek to stations with traffic announcements. This system relies upon receiving specific information from these stations and will only work when the 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, contact the radio station. While you are tuned to an RDS station, the station name or the call letters will appear on the display instead of the frequency. RDS stations may also provide the time of day, a program type (PTY) for current programming and the name of the program being broadcast. Finding a PTY Station To select and find a desired PTY perform the following: 1. Press the P-TYPE button. P-TYPE and the last selected PTY will be displayed on the screen. 2. Select a category by turning the P-TYPE knob. 3. Once the desired category is displayed, press either SEEK arrow to select the category and take you to the category's first station. 4. If you want to go to another station within that category and the category is displayed, press either SEEK arrow once. If the category is not displayed, press either SEEK arrow twice to display the category and then to go to another station. 5. If PTY times out and is no longer on the display, go back to Step 1. If both P-TYPE and TRAF are on, the radio will search for stations with the selected PTY and traffic announcements. To use the PTY interrupt feature, press and hold the P-TYPE button until you hear a beep on the PTY you want to interrupt with. When selected, an asterisk will appear beside that PTY on the display. You may select multiple interrupts if desired. When you are listening to a compact disc, the last selected RDS station will interrupt play if that selected program type format is broadcast. 3-84