GMC 2008 Envoy - 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.
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.
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.
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