Pontiac 2004 GTO Owner's Manual page 149

Master Reset
Your radio has a reset feature that allows you to return
certain settings back to the factory default settings.
Use this feature when adjustments have been made that
affect the sound quality or operation of the radio and
you are unsure of how to return to the original settings.
This master reset feature will reset the following:
•
Bass, Treble, Fade, and Balance
•
Confirmation beeps to on
•
SDV to setting 2
•
DDL to on
•
EQ to off.
To perform the master reset, do the following:
1. Turn off the radio by pressing the OFF button.
2. Press the ON button and pushbutton 4 at the same
time for about two seconds.
After the radio has finished resetting, the radio will
turn on with the original settings and no message
will appear on the display.
Mobile Telephone
Your radio includes a telephone adapter. The phone
adapter and the radio are connected. If a mobile phone
hands-free kit with the correct features, such as mute
line and wiring for a separate speaker has been
connected to it, the sound of the radio or CD will be
muted when the phone rings, the voice of the caller will
then be heard through the vehicle's speakers, and
VOICE ON will appear on the display. When the call
ends, the radio or CD will come back on.
If the radio is off, it will turn on for a phone call if the
vehicle's ignition is in ON or ACCESSORY.
If a call is in progress when the vehicle is turned off, the
radio will remain on until the call is completed.
You can adjust the volume, bass, treble, fade, and
balance when a phone call is in progress without
affecting the radio settings.
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