GMC 2007 Envoy - Manual (Page 252)

AUTO EQ (Automatic Equalization): Press this
button 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 the AUTO EQ button until
CUSTOM displays.
If the radio has the Bose audio 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) displays.
Turn the knob to move the sound toward the right
or the left speakers.
To adjust the fade between the front and the rear
speakers, push and release the AUDIO knob
until FADE displays. Turn the knob to move the
sound toward the front or the rear speakers.
To adjust the balance or the fade to the middle
position while it is displayed, push the AUDIO
knob, then push it again and hold it until you hear
one beep.
To adjust all tone and speaker controls to the
middle position, push and hold the AUDIO knob
when no tone or speaker control displays.
ALL CENTERED displays and a beep sounds.
Finding a Program Type (PTY) Station
(RDS and XM™)
To select and find a desired PTY perform the
following:
1. Turn the P-TYPE knob to select a PTY.
2. Once the desired PTY displays, press the
SEEK TYPE button to select and go to the
PTY’s first station.
3. To go to another station within that PTY,
press the SEEK TYPE button twice to
display the PTY and then to go to another
station.
4. Press the P-TYPE knob to exit program type
select mode.
IF PTY times out and no longer displays, go
back to Step 1.
If both PTY and TRAF are on, the radio searches
for stations with the selected PTY and traffic
announcements.
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