2004 GMC SONOMA Owner's Manual

Radio with Cassette and CD
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease volume.
AUTO VOL (Automatic Volume):With automatic
volume, your audio system adjusts automatically
to make up for road and wind noise as you drive.Set the volume at the desired level. Press this button to
select LOW, MEDIUM, or HIGH. AVOL will appear
on the display. Each higher setting will allow for more
volume compensation at faster vehicle speeds. Then as
you drive, automatic volume increases the volume as
necessary to overcome noise at any speed. The volume
level should always sound the same to you as you
drive. NONE will appear on the display if the radio
cannot determine the vehicle speed. If you don’t want to
use automatic volume, select OFF.
DISP (Display):Press this knob to switch the display
between the radio station frequency and the time.
Time display is available with the ignition turned off.
For RDS, press the DISP knob to change what appears
on the display while using RDS. The display options
are station name, RDS station frequency, PTY, and the
name of the program (if available).
To change the default on the display, press the DISP
knob until you see the display you want, then hold
the knob for two seconds. The radio will produce one
beep and selected display will now be the default.
3-49

Finding a Station
BAND:Press this button to switch between FM1, FM2,
or AM. The display will show your selection.
TUNE:Turn this knob to select radio stations.
qSEEKr:Press the right or the left arrow to go to
the next or to the previous station and stay there.
The radio will seek only to stations that are in the
selected band and only to those with a strong signal.
qPSCANr(Preset Scan):Press and hold
either arrow for more than two seconds. The radio will
produce one beep. The radio will scan through each
of the preset stations stored on the pushbuttons, play for
a few seconds, then go on to the next preset station.
SCAN will appear on the display. Press either arrow
again or one of the pushbuttons to stop scanning
presets.
The radio will scan only to the preset stations that are in
the selected band and only to those with a strong
signal.
Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 30 stations
(six FM1, six FM2, and six AM), by performing the
following steps:
1. Turn the radio on.
2. Press BAND to select FM1, FM2, or AM.
3. Tune in the desired station.
4. Press AUTO TONE to select the equalization.
5. Press and hold one of the six numbered
pushbuttons until you hear a beep. Whenever you
press that numbered pushbutton, the station
you set will return and the equalization that you
selected will be automatically stored for that
pushbutton.
6. Repeat the steps for each pushbutton.
3-50

Setting the Tone (Bass/Treble)
AUDIO:Push and release the AUDIO knob until BASS
or TREB appears on the display. Turn the knob to
increase or to decrease. The display will show the bass
or the treble level. If a station is weak or noisy, you
may want to decrease the treble.
To adjust bass and treble to the middle position, push
and hold the AUDIO knob. The radio will produce
one beep and adjust the display level to the middle
position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker control is displayed. ALL will appear on
the display and you will hear a beep with the level
display in the middle position.
AUTO TONE (Automatic Tone):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 AUDIO knob until MANUAL
is displayed.
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 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 the rear
speakers, push and release the AUDIO knob until FADE
appears on the display. Turn the knob to move the
sound toward the front or the rear speakers.
To adjust the balance and fade to the middle position,
push the AUDIO knob then push it again and hold it until
you hear one beep. The balance and the fade will be
adjusted to the middle position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker control is displayed. ALL will appear on
the display and you will hear a beep with the level
display in the middle position.
3-51

Radio Data System (RDS)
Your audio system is equipped with a Radio Data
System (RDS). RDS features are available for use only
on FM stations that broadcast RDS information.
With RDS, your radio can do the following:
•Seek to stations broadcasting the selected type of
programming
•Receive announcements concerning local and
national emergencies
•Display messages from radio stations
•Seek to stations with traffic announcements
This system relies upon receiving specific information
from these stations and will only work when the
information is available. In rare cases, a radio station
may broadcast incorrect information that will cause
the radio features to work improperly. If this happens,
contact the radio station.
While you are tuned to an RDS station, the station
name or the call letters will appear on the display instead
of the frequency. RDS stations may also provide the
time of day, a program type (PTY) for current
programming, and the name of the program being
broadcast.
Finding a Program Type (PTY) Station
To select and find a desired PTY perform the
following:
1. Press the P-TYPE LIST knob to activate program
type select mode. TYPE and a PTY will appear on
the display.
2. Turn the P-TYPE LIST knob to select a PTY.
3. Once the desired PTY is displayed, press the SEEK
TYPE button to take you to the PTY’s first station.
4. If you want to go to another station within that PTY
and the PTY is displayed, press the SEEK TYPE
button once. If the PTY is not displayed, press
the SEEK TYPE button twice to display the PTY and
then to go to another station.
5. Press P-TYPE LIST to exit program type
select mode.
If PTY times out and is no longer on the display, go
back to Step 1.
If both PTY and TRAF are on, the radio will search for
stations with the selected PTY and traffic
announcements.
3-52

If the radio cannot find the desired program type, NONE
will appear on the display and the radio will return to
the last station you were listening to.
BAND (Alternate Frequency):Alternate frequency
allows the radio to switch to a stronger station with the
same program type. To turn alternate frequency on,
press and hold BAND for two seconds. AF ON will
appear on the display. The radio may switch to stronger
stations.
To turn alternate frequency off, press and hold BAND
again for two seconds. AF OFF will appear on the
display. The radio will not switch to other stations.
RDS Messages
ALERT!:Alert warns of local or national emergencies.
When an alert announcement comes on the current
radio station, ALERT! will appear on the display. You will
hear the announcement, even if the volume is muted
or a cassette tape or CD is playing. If a cassette tape or
CD is playing, play will stop during the announcement.
You will not be able to turn off alert announcements.ALERT! will not be affected by tests of the emergency
broadcast system. This feature is not supported by
all RDS stations.
INFO (Information):If the current station has a
message, the information symbol will appear on the
display. Press this button to see the message. The
message may display the artist, song title, call in phone
numbers, etc.
If the whole message is not displayed, parts of the
message will appear every three seconds. To scroll
through the message at your own speed, press
the INFO button repeatedly. A new group of words will
appear on the display with each press. Once the
complete message has been displayed, the information
symbol will disappear from the display until another
new message is received. The old message can
be displayed by pressing the INFO button. You can
view an old message until a new message is received
or a different station is tuned to.
When a message is not available from a station, NO
INFO will appear on the display.
3-53

TRAF (Traffic):If TRAF appears on the display, the
tuned station broadcasts traffic announcements
and when a traffic announcement comes on the tuned
radio station you will hear it.
If the current tuned station does not broadcast traffic
announcements, press the TRAF button and the
radio will seek to a station that does. When the radio
finds a station that broadcasts traffic announcements,
the radio will stop and TRAF will be displayed. When a
traffic announcement comes on the tuned radio
station you will hear it. If no station is found, NO TRAF
will appear on the display.
If TRAF is on the display you can press the TRAF
button to turn off the traffic announcements.
Your radio will play the traffic announcement even if the
volume is muted or interrupt the play of a cassette
tape or CD if the last tuned station broadcasts traffic
announcements.
Radio Messages
CAL ERR (Calibration Error):Your audio system has
been calibrated for your vehicle from the factory. If
CAL ERR appears on the display it means that your
radio has not been configured properly for your vehicle
and must be returned to the dealer for service.LOCKED:This message is displayed when the
THEFTLOCK
®system has locked up. You must return
to the dealer for service.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer.
Playing a Cassette Tape
Your tape player is built to work best with tapes that are
up to 30 to 45 minutes long on each side. Tapes
longer than that are so thin they may not work well in
this player. The longer side with the tape visible should
face to the right. If the ignition is on, but the radio is
off, the tape can be inserted and will begin playing. A
tape symbol is shown on the display whenever a tape is
inserted. If you hear nothing or hear a garbled sound,
the tape may not be in squarely. Press EJT to remove
the tape and start over.
While the tape is playing, use the VOL, AUDIO, and
SEEK controls just as you do for the radio. The display
will show TAPE and an arrow showing which side of
the tape is playing.
If you want to insert a tape while the ignition is off, first
press the EJT button or the DISP knob.
If an error appears on the display, see “Cassette Tape
Messages” later in this section.
3-54

1 PREV (Previous):Your tape must have at least three
seconds of silence between each selection for previous
to work. Press this pushbutton to go to the previous
selection on the tape if the current selection has been
playing for less than three seconds. If pressed when the
current selection has been playing from 3 to 13 seconds,
it will go to the beginning of the previous selection or
the beginning of the current selection, depending upon
the position on the tape. If pressed when the current
selection has been playing for more than 13 seconds, it
will go to the beginning of the current selection.
SEEK and a negative number will appear on the display
while the cassette player is in the previous mode.
Pressing this pushbutton multiple times or holding it will
increase the number of selections to be searched
back, up to -9.
2 NEXT:Your tape must have at least three seconds of
silence between each selection for next to work.
Press this pushbutton to go to the next selection on the
tape. If you press this pushbutton more than once,
the player will continue moving forward through the tape.
SEEK and a positive number will appear on the
display.3 REV (Reverse):Press this pushbutton to reverse
quickly within the tape. Press it again to return to playing
speed. The radio will play while the tape reverses.
The station frequency and REV will appear on
the display. You may select stations during reverse
operation using TUNE, SEEK, or PSCAN.
4 FWD (Forward):Press this pushbutton to advance
quickly within the tape. Press it again to return to playing
speed. The radio will play while the tape advances.
The station frequency and FWD will appear on
the display. You may select stations during forward
operation by using TUNE, SEEK, or PSCAN.
5
XSIDE:Press this pushbutton to play the other side
of the tape.
qSEEKr:The right arrow is the same as the
NEXT pushbutton, and the left arrow is the same as the
PREV pushbutton. If the arrows are held or pressed
more than once, the player will continue moving forward
or backward through the tape. SEEK and a positive
or a negative number will appear on the display.
BAND:Press this button to listen to the radio when a
tape or a CD is playing. The inactive tape or CD
will remain safely inside the radio for future listening.
3-55

TAPE CD:Press this button to play a tape or a CD
when listening to the radio. The inactive tape or CD will
remain safely inside the radio for future listening.
ZEJT (Eject):Press this button, located to the right
of the cassette tape slot, to eject a tape. Eject may
be activated with the ignition or radio off. Cassette tapes
may be loaded with the radio off if this button is
pressed first.
Cassette Tape Messages
CHK TAPE (Check Tape):If this message appears on
the display, the tape will not play because of one of
the following reasons:
•The tape is tight and the player cannot turn the
tape hubs. Remove the tape. Hold the tape with
the open end down and try to turn the right
hub counterclockwise with a pencil. Turn the tape
over and repeat. If the hubs do not turn easily, your
tape may be damaged and should not be used in
the player. Try a new tape to make sure your player
is working properly.
•The tape is broken. Try a new tape.
•The tape is wrapped around the tape head. Attempt
to get the cassette out. Try a new tape.CLEAN:If this message appears on the display, the
cassette tape player needs to be cleaned. It will still play
tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. SeeCare
of Your Cassette Tape Player on page 3-74.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer. If you radio displays
an error message, write it down and provide it to your
dealer when reporting the problem.
CD Adapter Kits
It is possible to use a portable CD player adapter kit
with your cassette tape player after disabling the
tight/loose tape sensing feature on your tape player.
To disable the feature, use the following steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the TAPE CD button. The radio will
display READY and flash the cassette symbol.
4. Insert the adapter into the cassette slot. It will
power up the radio and begin playing.
The override feature will remain active until EJT is
pressed.
3-56