GMC 2007 Sierra 1500 Pickup Owner's Manual page 322

AUTO EQ (Automatic Equalization): Press this
button to select customized equalization settings
designed for country/western, jazz, talk, pop, rock,
and classical.
The radio will save separate AUTO EQ settings
for each preset and source.
If the radio is equipped with the Bose
system, the equalization settings are either
CUSTOM or TALK.
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the
right and the left speakers, push and release the
AUDIO knob until BAL (balance) appears on
the display. Turn the knob to move the sound
toward the right or the left speakers.
To adjust the fade between the front and rear
speakers, push and release the AUDIO knob until
FAD (fade) appears on the display. Turn the
knob to move the sound toward the front or the
rear speakers.
To adjust the balance or fade 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.
322
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.
Finding a Program Type (PTY) Station
(RDS and XM™)
®
audio
To select and find a desired PTY perform the
following:
1. Press the TYPE button to activate program
2. Turn the TYPE knob or press and release the
3. Once the desired PTY is displayed, press
4. To go to another station within that PTY,
5. Press either the TYPE or the SEEK arrows
type select mode. P-TYPE and the last
selected PTY will appear on the display.
TYPE button to select a PTY.
either the TYPE or the SEEK arrows to
select and to take you to the PTY's first
station.
press the TYPE button then, press either
the TYPE or the SEEK arrows once. If
the PTY is not displayed, go back to Step 1.
twice to exit program type select mode.