GMC 2012 Sierra Series Owner's Manual page 222

7-8 Infotainment System
Adjusting the Speakers
(Balance/Fade) (AM-FM Radio
and AM-FM Radio with CD)
To adjust the balance or fade:
1. Press or press the
until the speaker control label
displays.
2. To adjust the setting, do one of
the following:
Turn the knob.
Press either SEEK,
or SEEK.
\
Press either FWD,
s
or REV.
Adjusting the Speakers
(Balance/Fade) (All Except
AM-FM Radio and Radio
with CD)
BAL/FADE (Balance/Fade): To
knob
adjust the balance or fade:
1. Press the
speaker control tabs display.
2. Highlight the desired speaker
control tab by doing one of the
following:
Press the
Press the softkey under the
desired tab.
3. Adjust the setting by doing one
of the following:
Turn the
or counterclockwise.
Press the
or SEEK.
Press the
s
or
I n f o r ma t i o n P r o v i d e d b y :
knob until the
knob.
knob clockwise
SEEK,
\
FWD,
REV.
To quickly adjust all speaker and
tone controls to the middle position,
press the knob for more than
two seconds.
If the Rear Seat Audio (RSA) is
turned on, the radio disables FADE
and mutes the rear speakers.
Radio Messages
Calibration Error: The audio
system has been calibrated for the
vehicle from the factory.
If Calibration Error displays, it
means that the radio has not been
configured properly for the vehicle
and it must be returned to your
dealer for service.
Locked or Loc: One of these
messages will display when the
®
THEFTLOCK system has locked
up the radio. Take the vehicle to
your dealer for service.
If any error occurs repeatedly or if
an error cannot be corrected,
contact your dealer.