2002 GMC SONOMA buttons

3-9
Finding a Station
AM
-FM: Press this knob to switch between AM, FM1
and FM2. The display shows your selection.
TUNE: Turn this knob to tune in radio stations.
SEEK : Press the right or left arrow to seek to the
next or previous station and stay there.
SCAN : Press both SCAN arrows. SCAN will
appear on the display. The radio will scan to the next
station, play for a few seconds, then scan to the next
station. Press the RECALL knob or both SCAN arrows
to stop scanning.
Setting Preset Stations
The four numbered pushbuttons let you return to your
favorite stations. You can set up to 21 stations
(seven AM, seven FM1 and seven FM2) by performing
the following steps:
1. Turn the radio on.
2. Press AM
-FM to select AM, FM1 or FM2.3. Tune in the desired station.
4. Press SET. SET will appear on the display.
5. Press one of the four pushbuttons within five
seconds. Whenever you press that numbered
pushbutton, the station you set will return.
6. Repeat the steps for each pushbutton.
In addition to the four stations already set, up to three
more stations may be preset on each band by pressing
two adjoining pushbuttons at the same time and by
performing the following steps:
1. Tune in the desired station.
2. Press SET. SET will appear on the display.
3. Press two adjoining pushbuttons at the same time,
within five seconds. Whenever you press the same
two pushbuttons, the station you set will return.
4. Repeat the steps for each pair of pushbuttons.

3-11
Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display shows your selection.
TUNE: Turn this knob to tune in radio stations.
SEEK SEEK : Press the right or left arrow to
seek to the next or previous station and stay there. The
radio will seek to stations with a strong signal only.
To scan stations, press and hold one of the SEEK arrows
for two seconds until you hear a beep. The radio will go
to a station, play for a few seconds and flash the station
frequency, then go on to the next station. Press one of
the SEEK arrows again to stop scanning. The radio will
scan to stations with a strong signal only.
To scan preset stations, press and hold one of the SEEK
arrows for more than four seconds until you hear two
beeps. The radio will go to the first preset station stored
on your pushbuttons, play for a few seconds and flash
the station frequency, then go on to the next preset
station. This feature will only scan the six presets that
are in the selected band. Press one of the SEEK arrows
again to stop scanning presets. The channel number
(P1
-P6) will appear momentarily just before the
frequency is displayed. The radio will scan preset
stations with a strong signal only.Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 18 stations
(six AM, six FM1 and six FM2) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered buttons until
you hear a beep. Whenever you press that numbered
pushbutton, the station you set will return.
5. Repeat the steps for each pushbutton.
Setting the Tone (Bass/Treble)
AUDIO: To adjust the bass, press and release AUDIO
repeatedly until BAS appears on the display. Then press
and hold the up arrow to increase bass. B and a positive
number will appear on the display. Press and hold the
down arrow to decrease bass. B and a negative number
will appear on the display. B and a zero will appear on
the display when the bass level is adjusted to the middle
position. Release the up or down arrow when you find
the bass level you want or when the maximum or
minimum level is reached.

3-14
Finding a Station
AM
-FM: Press this knob to switch between AM, FM1
and FM2.
TUNE: Turn this knob to tune in radio stations.
 SEEK
: Press the right or left arrow to seek to the
next or previous station and stay there.
To scan preset stations, press both SEEK buttons. The
radio will go to the first preset station stored on the
pushbutton, play for a few seconds, then go on to the
next preset station. Press either SEEK button or
RECALL to stop scanning through the preset stations.
Setting Preset Stations
The four numbered pushbuttons let you return to
your favorite stations. You can set up to 21 stations
(seven AM, seven FM1 and seven FM2) by performing
the following steps:
1. Turn the radio on.
2. Press AM
-FM to select AM, FM1 or FM2.
3. Tune in the desired station.4. Press SET. SET will appear on the display.
5. Press one of the four pushbuttons within five
seconds. Whenever you press that numbered
pushbutton, the station you set will return.
6. Repeat the steps for each pushbutton.
In addition to the four stations already set, up to three
more stations may be preset on each band by pressing
two adjoining pushbuttons at the same time and by
performing the following steps:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press SET. SET will appear on the display.
5. Press two adjoining pushbuttons at the same time,
within five seconds. Whenever you press the same
two pushbuttons, the station you set will return.
6. Repeat the steps for each adjoining pushbuttons.

3-16
CD Adapter Kits
It is possible to use a portable CD player adapter kit
with your cassette tape player after activating the bypass
feature on your tape player.
To activate the bypass feature, use the following steps:
1. Turn the ignition to RUN or ACCESSORY.
2. Turn the radio on.
3. Insert the adapter into the cassette slot.
4. Within five seconds, press and hold the REV and
FWD buttons at the same time for three seconds. The
tape symbol on the display will flash, showing that
the broken tape detection feature is no longer active.
This override routine will remain active until EJECT
is pressed.AM-FM Stereo with Cassette Tape Player
and Automatic Tone Control (If Equipped)
Playing the Radio
PWR (Power): Press this knob to turn the system on
and off.
VOL (Volume): Turn this knob clockwise to increase
volume. Turn it counterclockwise to decrease volume.
The knob is capable of being turned continuously.

3-17
RECALL: Pressing this button will display the station
being played or it will display the clock. Clock display
is available with the ignition turned off.
SCV (Speed
-Compensated Volume): With SCV, your
audio system adjusts automatically to make up for road
and wind noise as you drive. Set the volume at the
desired level. Turn the control ring behind the upper
knob clockwise to adjust the SCV. Each notch on the
control ring allows for more volume compensation at
faster vehicle speeds. Then, as you drive, SCV
automatically increases the volume, as necessary, to
overcome noise at any speed. The volume level should
always sound the same to you as you drive. If you don't
want to use SCV, turn the control all the way down.
Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display will show your selection.
TUNE: Press this knob lightly so it extends. Turn it to
choose radio stations. Push the knob back into its stored
position when you're not using it.
SEEK : Press the right or left arrow to seek to
the next or previous station and stay there. The radio
will seek to stations with a strong signal only. The sound
will mute while seeking.
To scan station, press and hold SEEK for two seconds
until SCAN appears on the display. The radio will go to
a station, play for a few seconds and flash the station
frequency, then go on to the next station. Press one of
the SEEK arrows again to stop scanning. The radio will
scan to stations with a strong signal only. The sound will
mute while scanning.
P.SCAN (Preset Scan): Press this button and P. SCAN
will appear on the display. The radio will go to the first
preset station stored on your pushbuttons, play for a few
seconds and flash the station frequency, then go on to
the next preset station. This feature will only scan the
six presets that are in the selected band. Press this button
again or a pushbutton to stop scanning presets. The
channel number (P1
-P6) will appear momentarily just
before the frequency is displayed. The radio will scan
preset stations with a strong signal only. The sound will
mute while scanning.

3-18
Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 18 stations
(six AM, six FM1 and six FM2) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press AUTO TONE to select the setting you prefer.
5. Press and hold one of the six pushbuttons. The sound
will mute. When it returns, release the button.
Whenever you press that numbered pushbutton, the
station you set will return and the tone you selected
will be automatically selected for that pushbutton.
6. Repeat the steps for each pushbutton.Setting the Tone (Bass/Treble)
BASS: Press this knob lightly so it extends. Turn the
knob clockwise to increase bass and counterclockwise to
decrease bass.
TREB: Press this knob lightly so it extends. Turn the
knob clockwise to increase treble and counterclockwise
to decrease treble. If a station is weak or noisy, you may
want to decrease the treble.
Push these knobs back into their stored positions when
you're not using them.
AUTO TONE: This feature allows you to choose
bass and treble equalization settings designed for
country/western, jazz, talk, pop, rock and
classical stations.
Each time you press the AUTO TONE button, this
feature will switch to one of these program types.
To return the bass and treble to the manual mode, either
press and release the AUTO TONE button until the
display goes blank or press and release the BASS or
TREB knobs and turn them until the display goes blank.

3-22
SCV (Speed-Compensated Volume): With SCV, your
audio system adjusts automatically to make up for road
and wind noise as you drive. Set the volume at the
desired level. Turn the control ring behind the upper
knob clockwise to adjust the SCV. Each notch on the
control ring allows for more volume compensation at
faster vehicle speeds. Then, as you drive, SCV
automatically increases the volume, as necessary, to
overcome noise at any speed. The volume level should
always sound the same to you as you drive. If you don't
want to use SCV, turn the control all the way down.
RECALL: Pressing this button will display the station
being played or it will display the clock. Clock display
is available with the ignition turned off.
Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display will show your selection.
TUNE: Press this knob lightly so it extends. Turn it to
choose radio stations. Push the knob back into its stored
position when you're not using it. SEEK : Press the right or left arrow to seek to the
next station or previous station and stay there. The radio
will seek to stations with a strong signal only. The sound
will mute while seeking.
To scan stations, press and hold either SEEK arrow for
two seconds until SCAN appears on the display. The
radio will scan to a station, play for a few seconds, then
go on to the next station. Press either SEEK arrow again
to stop scanning. The radio will scan to stations with a
strong signal only. The sound will mute while scanning.
P.SCAN (Preset Scan): Press this button to scan
through your favorite stations stored on your
pushbuttons. P.SCAN will appear on the display. The
radio will scan to the first preset station stored on your
pushbuttons, play for a few seconds, then go on to the
next station. Press this button again or one of the
pushbuttons to stop scanning. The channel number
(P1 through P6) will appear with the frequency. The
radio will scan preset stations with a strong signal only.
The sound will mute while scanning.

3-23
Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 18 stations
(six AM, six FM1 and six FM2) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press AUTO TONE to select the setting you prefer.
5. Press and hold one of the six pushbuttons. The sound
will mute. When it returns, release the pushbutton.
Whenever you press that numbered pushbutton, the
station you set will return and the tone you selected
will be automatically selected for that pushbutton.
6. Repeat the steps for each pushbutton.Setting the Tone (Bass/Treble)
BASS: Press this knob lightly so it extends. Turn the
knob clockwise to increase bass and counterclockwise to
decrease bass.
TREB (Treble): Press this knob lightly so it extends.
Turn the knob clockwise to increase treble and
counterclockwise to decrease treble. If a station is weak
or noisy, you may want to decrease the treble.
Push these knobs back into their stored positions when
you're not using them.
AUTO TONE: This feature allows you to choose
bass and treble equalization settings designed for
country/western, jazz, talk, pop, rock and
classical stations.
Each time you press the AUTO TONE button, this
feature will switch to one of these program types.
To return the bass and treble to the manual mode, either
press and release the AUTO TONE button until the
display goes blank or press and release the BASS or
TREB knobs and turn them until the display goes blank.