GMC 2002 Envoy - Manual (Page 193)

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This function will only work during actual emergency
broadcasts, and will not work during tests of the
emergency broadcast system. This feature is not
supported by all RDS stations.
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 Compact Disc
Insert a disc partway into the slot, label side up. The
player will pull it in and the disc should begin playing.
The display will show the CD symbol. If you want to
insert a compact disc with the ignition off, first press
TUNE DISP or EJT.
If an error appears on the display, see “Radio/Compact
Disc Messages” later in this section.