GMC 2003 Yukon Owner's Manual page 254

Playing the Radio
PWR (Power): Push this knob to turn the system on
and off.
VOLUME: Turn the 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.
RCL (Recall): Push this knob to switch the display
between the radio station frequency and the time.
Pushing this knob with the ignition off will display
the time.
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 pushing
and releasing this knob, you may retrieve four different
categories of information: Artist, Song Title, Category
or PTY, Channel Number/Channel Name.
3-100
To change the default on the display, push this knob
until you see the display you want, then hold the knob
until the display flashes. The 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 select radio stations.
s t
SEEK : Press the right or the left arrow to go 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.
s t
SCAN : Press and hold either SCAN arrow
for two seconds until SC appears on the display and
you hear a beep. The radio will go to a station, play for
a few seconds, then go on to the next station. Press
either SCAN arrow again to stop scanning.