Chevrolet 2004 Venture Owner's Manual page 276

Playing the Radio
PWR (Power): Push this knob to turn the system on
and off.
VOLUME: Turn this knob to increase or to decrease
volume.
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.
3-94
RCL (Recall): Press this knob to switch the display
between the radio station frequency and the time.
Pressing this knob with the ignition off will display
the time.
For XM™ (48 contiguous US states, if equipped), press
the RCL 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,
Channel Number/Channel Name.
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.