GMC 2008 Envoy - Manual (Page 204)

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 a beep sounds. When that
numbered pushbutton is pressed, the station
that was set, returns.
5. Repeat Steps 2 through 4 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 button to select
the equalization setting.
Once the equalization no longer displays, the
equalization is set for that preset station.
Setting the Tone
(Bass/Midrange/Treble)
AUDIO: Push and release until BASS, MID (midrange)
(without Bose
® ), or TREB (treble) displays. Turn to
increase or to decrease the tone. The display shows the
bass, midrange (without Bose
® ), or treble level. If a
station is weak or has static, decrease the treble.
To adjust the bass, midrange (without Bose ® ), or treble
to the middle position while it is displayed, push and
hold this knob. The radio produces one beep and
adjusts 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 displays. ALL CENTERED
displays and a beep is heard.
AUTO EQ (Automatic Equalization): Press to select
customized equalization settings designed for country/
western, jazz, talk, pop, rock, and classical.
To return the bass and treble to the manual mode, push
and release this button until CUSTOM displays.
The radio saves separate AUTO EQ settings for each
preset and source.
If the radio has the Bose ® audio system, the equalization
settings are either CUSTOM or TALK.
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