GMC 2007 Envoy - Manual (Page 260)

AUTO VOL (Automatic Volume): With automatic
volume, the audio system adjusts 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 MIN (minimum), MED (medium),
or MAX (maximum). AUTO VOL displays.
Each higher setting provides more volume
compensation at faster vehicle speeds. To turn
automatic volume off, press this button until AUTO
VOL 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.
o TUNE p : Turn this knob to select
radio stations.
© SEEK ¨ : Press either the SEEK or the TYPE
arrows to go to the next or to the previous
station and stay there.
The radio only seeks stations with a strong signal
that are in the selected band.
© SCAN ¨ : Press and hold either the SCAN or
the TYPE arrows for two seconds until SCN
displays and a beep sounds. The radio goes to a
station, plays for a few seconds, then goes to
the next station. Press either the SCAN or
the TYPE arrows again to stop scanning.
To scan preset stations, press and hold either
the SCAN or the TYPE arrows for more than
four seconds. PSC displays and a double beep
sounds. The radio goes to a preset station, plays
for a few seconds, then goes to the next preset
station. Press either the SCAN or the TYPE arrows
again to stop scanning presets.
The radio only scans stations with a strong signal
that are in the selected band.
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