ignition GMC SONOMA 2004 Service Manual

6 RDM (Random):Press this pushbutton to hear the
tracks in random, rather than sequential, order. RDM ON
will appear on the display. RDM T and the track
number will appear on the display when each track
starts to play. Press RDM again to turn off random play.
RDM OFF will appear on the display.
qSEEKr:Press the left arrow to go to the start of
the current or of the previous track. Press the right
arrow to go to the start of the next track. If you
hold either arrow or press it more than once, the player
will continue moving backward or forward through
the CD.
DISP (Display):Press this knob to see how long the
current track has been playing. ET and the elapsed time
of the track will appear on the display. To change the
default on the display (track or elapsed time), 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 the selected display will now be the
default.
BAND:Press this button to listen to the radio when a
CD is playing. The inactive CD will remain safely
inside the radio for future listening.
CD AUX (Auxiliary):Press this button to play a CD
when listening to the radio.
ZEJT (Eject):Press this button to eject a CD. Eject
may be activated with either the ignition or radio off.
CDs may be loaded with the ignition and radio off if this
button is pressed first.
CD Messages
If CHECK CD appears on the display and the CD
comes out, it could be for one of the following reasons:
•It is very hot. When the temperature returns to
normal, the CD should play.
•You are driving on a very rough road. When the
road becomes smooth, the CD should play.
•The CD is dirty, scratched, wet, or upside down.
•The air is very humid. If so, wait about an hour and
try again.
•There may have been a problem while burning
the CD.
•The label may be caught in the CD player.
If the CD is not playing correctly, for any other reason,
try a known good CD.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer. If your radio displays an
error message, write it down and provide it to your
dealer when reporting the problem.
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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.
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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.
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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.
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Playing a CD
Insert a CD partway into the slot, label side up. The
player will pull it in and the CD should begin playing. The
CD symbol will appear on the display. If you want to
insert a CD with the ignition off, first press the EJT
button or the DISP knob.
If you turn off the ignition or radio with a CD in the
player, it will stay in the player. When you turn on the
ignition or the radio, the CD will start playing, if it was the
last selected audio source.
As each new track starts to play, the track number will
appear on the display.
The CD player can play the smaller 8cm single CDs
with an adapter ring. Full-size CDs and the smaller CDs
are loaded in the same manner.
If playing a CD-R the sound quality may be reduced
due to CD-R quality, the method of recording, the quality
of the music that has been recorded, and the way the
CD-R has been handled. You may experience an
increase in skipping, difficulty in finding tracks and/or
difficulty in loading and ejecting. If these problems occur
try a known good CD.
Do not add paper labels to CDs, they could get caught
in the CD player.
Do not play 3 inch CDs without a standard adapter CD.
If an error appears on the display, see “CD Messages”
later in this section.1 PREV (Previous):Press this pushbutton to go to the
beginning of the current track if it has been playing
for more than eight seconds. TRACK and the track
number will appear on the display. If you hold this
pushbutton or press it more than once, the player will
continue moving backward through the CD.
2 NEXT:Press this pushbutton to go to the next track.
TRACK and the track number will appear on the
display. If you hold this pushbutton or press it more than
once, the player will continue moving forward through
the CD.
3 REV (Reverse):Press and hold this pushbutton to
reverse quickly within a track. Press and hold this
pushbutton for less than two seconds to reverse at six
times the normal playing speed. Press and hold it
for more than two seconds to reverse at 17 times the
normal playing speed. Release it to play the passage.
The display will show ET and the elapsed time of
the track.
4 FWD (Forward):Press and hold this pushbutton to
advance quickly within a track. Press and hold this
pushbutton for less than two seconds to advance at six
times the normal playing speed. Press and hold it for
more than two seconds to advance at 17 times the
normal playing speed. Release it to play the passage.
The display will show ET and the elapsed time of
the track.
3-57

6 RDM (Random):Press this pushbutton to hear the
tracks in random, rather than sequential, order. RDM ON
will appear on the display. RDM T and the track
number will appear on the display when each track
starts to play. Press RDM again to turn off random play.
RDM OFF will appear on the display.
qSEEKr:Press the left arrow to go to the start of
the current or of the previous track. Press the right
arrow to go to the start of the next track. If you
hold either arrow or press it more than once, the player
will continue moving backward or forward through
the CD.
DISP (Display):Press this knob to see how long the
current track has been playing. ET and the elapsed time
of the track will appear on the display. To change the
default on the display (track or elapsed time), 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 the selected display will now be the
default.
BAND:Press this button to listen to the radio when a
CD is playing. The inactive CD will remain safely
inside the radio for future listening.
TAPE CD):Press this button to play a CD when
listening to the radio.
ZEJT (Eject):Press this button to eject a CD. Eject
may be activated with either the ignition or radio off.
CDs may be loaded with the ignition and radio off if this
button is pressed first.
CD Messages
If CHECK CD appears on the display and the CD
comes out, it could be for one of the following reasons:
•It is very hot. When the temperature returns to
normal, the CD should play.
•You are driving on a very rough road. When the
road becomes smooth, the CD should play.
•The CD is dirty, scratched, wet, or upside down.
•The air is very humid. If so, wait about an hour and
try again.
•There may have been a problem while burning
the CD.
•The label may be caught in the CD player.
If the CD is not playing correctly, for any other reason,
try a known good CD.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer. If your radio displays an
error message, write it down and provide it to your
dealer when reporting the problem.
3-58

XM™ Satellite Radio Service
(48 Contiguous US States)
XM™ is a continental U.S. based satellite radio service
that offers 100 coast to coast channels including
music, news, sports, talk, and children’s programming.
XM™ provides digital quality audio and text information,
including song title and artist name. A service fee is
required in order to receive the XM™ service. For more
information, contact XM™ at www.xmradio.com or
call 1-800-852-XMXM (9696).
Playing the Radio
PWR (Power):Push this knob to turn the system on
and off.
VOLUME:Turn this knob to increase or to decrease
volume.
AUTO VOL (Automatic Volume):Your system has a
feature called automatic volume. With this feature,
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 MIN, MED, or MAX. 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. If you don’t want to use automatic
volume, select OFF.
RCL (Recall):Press this knob to switch the display
between the radio station frequency and the time.
Pressing this knob with the ignition off will display
the time.
For XM™ (48 contiguous US states, if equipped), press
the RCL knob while in XM™ mode to retrieve four
different categories of information related to the current
song or channel: Artist, Song Title, Category or PTY,
Channel Number/Channel Name.
To change the default on the display, press the RCL
knob until you see the display you want, then hold the
knob until the display flashes. The selected display
will now be the default.
3-60

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. When
you turn the ignition off and then on again, the alternate
frequency feature will automatically be turned on.
This function does not apply for XM™ Satellite Radio
Service.
Setting Preset PTYs (RDS Only)
The six numbered pushbuttons let you return to your
favorite PTYs. These buttons have factory PTY presets.
You can set up to 12 PTYs (six FM1 and six FM2) by
performing the following steps:
1. Press BAND to select FM1 or FM2.
2. Press the P-TYPE button to activate program type
select mode. P-TYPE and the last selected PTY will
appear on the display.
3. Turn the P-TYPE knob to select a PTY.
4. Press and hold one of the six numbered
pushbuttons until you hear a beep. Whenever you
press that numbered pushbutton, the PTY you
set will return.
5. Repeat the steps for each pushbutton.
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 CD is playing. If a 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, INFO 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, INFO 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.
3-64

Playing a CD
The CD player can play the smaller 8 cm single CDs
with an adapter ring. Full-size CDs and the smaller CDs
are loaded in the same manner.
If playing a CD-R the sound quality may be reduced
due to CD-R quality, the method of recording, the quality
of the music that has been recorded, and the way the
CD-R has been handled. You may experience an
increase in skipping, difficulty in finding tracks, and/or
difficulty in loading and ejecting. If these problems occur
try a known good CD.
Do not add paper labels to CDs, they could get caught
in the CD player.
Do not play 3 inch CDs without a standard adapter CD.
If an error appears on the display, see “CD Messages”
later in this section.LOAD CD
Z:Press the LOAD side of this button to
load CDs into the CD player. This CD player will
hold up to six CDs.
To insert one CD, do the following:
1. Turn the ignition on.
2. Press and release the LOAD side of the LOAD CD
button.
3. Wait for the light, located to the right of the slot, to
turn green.
4. Load a CD. Insert the CD partway into the slot,
label side up. The player will pull the CD in.
When a CD is inserted, the CD symbol will be displayed.
If you select an equalization setting for your CD, it will
be activated each time you play a CD.
The CD will begin to play automatically. As each new
track starts to play, the track number will appear on the
display.
3-68

To insert multiple CDs, do the following:
1. Turn the ignition on.
2. Press and hold the LOAD side of the LOAD CD
button for two seconds.
You will hear a beep and the light, located to the
right of the slot, will begin to flash.
3. Once the light stops flashing and turns green, load
a CD. Insert the CD partway into the slot, label side
up. The player will pull the CD in.
4. Once the CD is loaded, the light will begin flashing
again. Press the LOAD side of the LOAD CD button
again. Once the light turns green, load the next
CD. Repeat this procedure for each CD.
The CD player takes up to six CDs. Do not try to
load more than six.
To load more than one CD but less than six, complete
Steps 1 through 3. When you have finished loading
CDs, the radio will begin to play the last CD loaded.
When a CD is inserted, the CD symbol will be displayed.
If more than one CD has been loaded, a number for
each CD will be displayed. If you select an equalization
setting for your CD, it will be activated each time you
play a CD.
As each new track starts to play, the track number will
appear on the display.Playing a Specic Loaded CD
For every CD loaded, a number will appear on the
display. To play a specific CD, first press the CD AUX
button, then press the numbered pushbutton that
corresponds to the CD you want to play. A small bar will
appear under the CD number that is playing, and the
track number will appear.
If an error appears on the display, see “CD Messages”
later in this section.
LOAD CD
Z(Eject):Press the CD eject side of this
button to eject a CD. You will hear a beep and the
light will flash to let you know when a CD is being
ejected.
REMOVE CD will be displayed. You can now remove
the CD. If the CD is not removed, after 25 seconds, the
CD will be automatically pulled back into the receiver.
If you try to push the CD back into the receiver,
before the 25 second time period is complete, the
receiver will sense an error and will try to eject the CD
several times before stopping.
Do not repeatedly press the CD eject button to eject a
CD after you have tried to push it in manually. The
receivers 25-second eject timer will reset at each press
of eject, which will cause the receiver to not eject
the CD until the 25-second time period has elapsed.
3-69