Chevrolet 2004 Express Van Owner's Manual page 185

AUTO VOL (Automatic Volume): Your system has a
feature called automatic volume. With this feature,
your 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 MIN, MED, or MAX. Each higher setting will
allow 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. If you do not want to use automatic
volume, select OFF.
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 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.
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.
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