2002 GMC Envoy Owner's Manual - Page 202

INFO: If the current station has a message, the INFO icon will appear on the display. These text messages are from the RDS broadcaster to the listening public and may be general information such as artist and song title, call in phone numbers, etc. Press this button to see the message. If the whole message does not appear on the display, parts of the message will appear every three seconds until the message is completed. To scroll through the message at your own speed, press the INFO button again for less than one second. A new group of words will appear on the display. Once the complete message has been displayed, the INFO icon will disappear from the display until another new message is received. The old message can be displayed by pressing the INFO button until a new message is received or a different station is tuned to. TRAF: Press this button to receive traffic announcements. If the current tuned station does not broadcast traffic announcements, the radio will seek to a station that does. The TRAF icon will flash on the display. When the radio finds a station that broadcasts traffic announcements, it will stop. If no station is found, NO TRAF will appear on the display. Your radio can be programmed to interrupt the playback of a cassette tape, CD or FM radio by enabling the traffic interrupt feature. Press the TRAF button once to seek to an RDS station that supports the traffic interrupt feature if the current tuned station does not. The TRAF icon will flash on the display when seeking for a station that supports traffic interrupt. When the traffic interrupt feature is on, TRAF will appear on the display. When a traffic announcement comes on the tuned radio station, you will hear it, even if the volume is muted or a cassette tape or compact disc is playing. The TRAF icon and TRAFFIC will appear on the display while the traffic announcement plays. If the cassette tape or compact disc player was being used, the tape or compact disc will stay in the player and resume play at the point where it stopped. Playing a Cassette Tape Your tape player is built to work best with tapes that are up to 30 to 45 minutes long on each side. Tapes longer than that are so thin they may not work well in this player. The longer side with the tape visible should face to the right. If the ignition is on, but the radio is off, the tape can be inserted and will begin playing. A tape symbol is shown on the display whenever a tape is inserted. If you hear nothing but a garbled sound, the tape may not be in squarely. Press EJT to remove the tape and start over. 3-28