GMC 2003 Yukon Owner's Manual page 241

Playing the Radio
PWR (Power): Press this knob to turn the system on
and off.
VOL (Volume): Turn this knob to increase or to
decrease volume.
AUTO VOL (Automatic Volume): With automatic
volume, your audio system will adjust automatically to
make up for road and wind noise as you drive by
increasing the volume as vehicle speed increases.
Set the volume at the desired level. Press this button to
select LOW, MEDIUM or HIGH. AVOL will appear on
the display. Each higher setting will provide more
volume compensation as vehicle speed increases. To
turn automatic volume off, press this button until
AVOL OFF appears on the display.
DISP (Display): Push this knob to switch the display
between radio station frequency and time. Time display
is available with the ignition turned off.
For RDS, push this knob to change what appears on
the display while using RDS. The display options
are station name, RDS station frequency, PTY and the
name of the program (if available).
For XM™ (USA only, if equipped), push this knob while
in XM mode to retrieve various pieces of information
related to the current song or channel. By pressing and
releasing this knob, you may retrieve four different
categories of information: Artist, Song Title, Category or
PTY, Channel Number/Channel Name.
To change the default on the display, push this knob
until you see the display you want, then hold the knob
for two seconds. The radio will produce one beep
and selected display will now be the default.
Finding a Station
BAND: Press this button to switch between AM, FM1,
FM2, or XM1, XM2 (USA only, if equipped). The
display will show your selection.
TUNE: Turn this knob to choose radio stations.
q r
SEEK : Press the right or the left arrow to seek
to the next or to the previous station and stay there.
The radio will seek only to stations that are in the
selected band and only to those with a strong signal.
q r
SCAN : Press and hold one of the arrows
for more than two seconds. The radio will produce one
beep. The radio will scan to a station, play for a few
seconds, then go on to the next station. SCAN will be
displayed. Press one of the arrows again to stop
scanning.
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