Oldsmobile Bravada 2002 Owner's Manual page 190

Radio Announcements
(Alert): Warns of national or local emergencies.
You will not be able to turn off alert announcements.
ALERT! appears on the display when an alert
announcement plays. When an alert announcement
comes on the tuned radio station, you will hear it,
even if the volume is muted or a compact disc is
playing. If the compact disc player is playing, play
will stop for the announcement and resume when the
announcement is finished.
INFO: If the current station has a message, INFO
will appear on the display. 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 see the parts
of the message faster than every three seconds, press this
button again. A new group of words will appear on the
display. Once the complete message has been displayed,
INFO will disappear from the display until another new
message is received.
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TRAF: Press this button to receive traffic
announcements. The traffic announcement brackets will
appear on the display. TRAF will appear on the display
if the tuned station broadcasts traffic announcements.
If the current tuned station does not broadcast traffic
announcements, the radio will seek to a station that
does. When the radio finds a station that broadcasts
traffic announcements, it will stop. If no station is
found, NONE FOUND will appear on the display.
When a traffic announcement comes on the tuned
radio station or a related network station, you will
hear it, even if the volume is muted or a compact disc
is playing. If the compact disc player was being used,
the compact disc will stay in the player and resume
play at the point where it stopped.