Hummer 2004 H2 - Manual (Page 209)

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): Press this knob to switch the display
between the radio station frequency and the time. Press
this knob with the ignition off to display the time.
To change the default on the display, press the RCL
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 FM1, FM2,
or AM. The display will show your selection.
TUNE: Turn this knob to select radio stations.
s
SEEK
t
: 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
SCAN
t
: 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.
To scan preset stations, press and hold either SCAN
arrow for more than four seconds. PRESET SCAN will
appear on the display and you will hear a double
beep. The radio will go to a preset station stored on
your pushbuttons, play for a few seconds, then go on to
the next preset station. Press either SCAN arrow
again to stop scanning presets.
The radio will scan only to stations that are in the
selected band and only to those with a strong signal.
3-75