2008 GMC Envoy Owner's Manual - Page 207

Setting Preset PTYs (RDS Only) For the Base Radio, pushbuttons have factory PTY presets. Up to 12 PTYs (six FM1 and six FM2), can be programmed on the six numbered pushbuttons, by performing the following steps: 1. Press BAND to select FM1 or FM2. 2. Press the TYPE button to activate program type select mode. P-TYPE and the last selected PTY displays. 3. Turn the TYPE knob or press and release the TYPE button to select a PTY. 4. Press and hold one of the six numbered pushbuttons until a beep sounds. When that numbered pushbutton is pressed (while in PTY mode), the PTY that was set, returns. 5. Repeat the steps for each pushbutton. ALERT! is not affected by tests of the emergency broadcast system. This feature is not supported by all RDS stations. TRAF (Traffic) (MP3 Radio): If TRAF displays, the tuned station broadcasts traffic announcements and you will hear a traffic announcement when the tuned radio station broadcasts one. If the station does not broadcast traffic announcements, press the TRAF button and the radio seeks to a station that does. When a station that broadcasts traffic announcements is found, the radio stops seeking and TRAF displays. If no station is found that broadcasts traffic announcements, No Traf displays. If TRAF displays, press the TRAF button to turn off the traffic announcements. The radio plays the traffic announcement if the volume is low. The radio interrupts the play of a CD if the last tuned station broadcasts traffic announcements. This function does not apply to XM™ Satellite Radio Service. INFO (Information): If the current station has a message, the information symbol or INFO displays. Press this button to see the message. The message can display the artist, song title, call in phone numbers, etc. RDS Messages ALERT! (MP3 Radio): Alert warns of local or national emergencies. When an alert announcement comes on the current radio station, ALERT! displays. You will hear the announcement, even if the volume is low or a CD is playing. If a CD is playing, play stops during the announcement. Alert announcements cannot be turned off. 3-73