Hummer 2007 H3 - Manual (Page 212)

Playing the Radio
P (Power): Press this knob to turn the system
on and off.
Turn this knob clockwise or counterclockwise to
increase or to decrease the volume.
DISP (Display): When the ignition is turned off,
press this knob to display the time.
For XM™ (if equipped), press the DISP knob while
in XM™ mode to retrieve four different categories of
information related to the current song or channel:
Artist, Song Title, Category or PTY (program type),
Channel Number/Channel Name.
To change the default on the display, press the
DISP knob until you see the desired display, then
hold this knob for two seconds. The radio produces
one beep and the selected display becomes the
default.
AUTO VOL (Automatic Volume): With automatic
volume, the audio system adjusts automatically
to make up for road and wind noise as you drive.
Set the volume at the desired level. Press this
button to select LOW, MEDIUM, or HIGH.
Each higher setting allows for more volume
compensation at faster vehicle speeds. Then as
you drive, automatic volume increases the volume,
as necessary, to overcome noise at any speed.
The volume level should always sound the same to
you as you drive. NONE displays if the radio
cannot determine the vehicle speed. To turn
automatic volume off, press this button until
AVOL OFF displays.
Finding a Station
BAND: Press this button to switch between FM1,
FM2, AM, or XM1 or XM2 (if equipped). The
display shows the selection.
e (Tune): Turn this knob to select radio stations.
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