GMC 2007 Sierra 1500 Pickup Owner's Manual page 321

To scan preset stations, press and hold either
the SCAN or the TYPE arrows for more than
four seconds. PSC will appear on the display and
you will hear a double beep. The radio will go to a
preset station, play for a few seconds, then go on to
the next preset station. Press either the SCAN or
the TYPE arrows again to stop scanning presets.
The radio will only scan stations with a strong signal
that are in the selected band.
Setting Preset Stations
Up to 30 stations (six FM1, six FM2, and six AM,
six XM1 and six XM2 (if equipped)), can be
programed on the six numbered pushbuttons, by
performing the following steps:
1. Turn the radio on.
2. Press BAND to select FM1, FM2, AM, or XM1
or XM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered
pushbuttons until you hear a beep.
Whenever that numbered pushbutton is
pressed, the station that was set will return for
that pushbutton.
5. Repeat the steps for each pushbutton.
To store an equalization setting to a preset station
perform the following:
1. Tune to the preset station.
2. Press and release the AUTO EQ
(equalization) button to select the equalization
setting.
Once the equalization no longer appears on
the display, the equalization will be set for that
preset station.
Setting the Tone (Bass/Treble)
AUDIO: Push and release the AUDIO knob until
BASS or TREB appears on the display. Turn
the knob to increase or to decrease. The display
will show the bass or treble level. If a station
is weak or noisy, decrease the treble.
To adjust the bass or treble to the middle position
while it is displayed, push and hold the AUDIO
knob. The radio will produce one beep and adjust
the display level to the middle position.
To adjust all tone and speaker controls to the
middle position, push and hold the AUDIO knob
when no tone or speaker controls are displayed.
ALL CENTERED will appear on the display
and you will hear a beep.
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