Hummer 2003 H2 Owner's Manual page 218

RDS Messages
ALERT!: Alert warns of local or national emergencies.
When an alert announcement comes on the current radio
station, ALERT! will appear on the display. You will
hear the announcement, even if the volume is muted or
a compact disc is playing. If the compact disc player is
playing, play will stop during the announcement.
You will not be able to turn off alert announcements.
ALERT! will not be affected by tests of the emergency
broadcast system. This feature is not supported by all
RDS stations.
INFO (Information): If the current station has a
message, INFO will appear on the display. Press this
button to see the message. The message may the artist
and song title, call in phone numbers, etc.
If the whole message is not displayed, parts of it will
appear every three seconds. To scroll through the
message at your own speed, press the INFO button
repeatedly. A new group of words will appear on the
display with each press. Once the complete message has
been displayed, INFO 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.
3-26
TRAF (Traffic): Press this button to seek to a station
that broadcasts traffic announcements. TRAF will
appear on the display. If no station is found, NO TRAF
will appear on the display.
When a traffic announcement comes on the current
station or on 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 is being used,
play will stop during the announcement.
Playing a Compact Disc
If an error appears on the display, see "Compact Disc
Messages" later in this section.
LOAD CD : Press the LOAD side of this button to
load CDs into the compact disc player. This compact
disc player will hold up to six discs.
To insert one disc, do the following:
1. Turn the ignition on.
2. Press and release the LOAD side of the LOAD
CD button.
3. Wait for the light, located to the right of the slot,
to turn green.
4. Load a disc. Insert the disc partway into the slot,
label side up. The player will pull the disc in.