display GMC SONOMA 2002 Workshop Manual

3-51
Playing a Specific Loaded Compact Disc
For every CD loaded, a number will appear on the radio
display. To play a specific CD, first press the CD AUX
button to start playing a CD. 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 radio display, see ªCompact
Disc Messagesº later in this section.
LOAD CD
(Eject): The CD eject side of this
button will eject a disc or discs, if you have multiple
discs loaded. To eject a disc or discs from the disc
player, perform one of the following steps:

Press and release the CD eject side of the LOAD CD
button to eject the disc that is currently playing, or

to eject all of the discs, press the CD eject side of the
LOAD CD button for two seconds, you will hear a
beep, and the light will flash to let you know when a
disc is being ejected.When the CD eject side of the LOAD CD button is
pressed, the receiver will eject the disc and REMOVE
CD will be displayed. You can now remove the disc. If
the disc is not removed, after 25 seconds, the disc will
be automatically pulled back into the receiver. If you try
to push the disc back into the receiver, before the
25 second time period is complete, the receiver will
sense an error and will try to eject the disc several times
before stopping.
Do not repeatedly press the CD eject side of the LOAD
CD eject button to eject a disc after you have tried to
push it in manually. The receiver's 25
-second eject
timer will reset at each press of eject, which will cause
the receiver to not eject the disc until the 25
-second time
period has elapsed.
Once the player stops and the disc is ejected, remove
the disc. After removing the disc, press the PWR knob
off and then on again. This will clear the disc
-sensing
feature and enable discs to be loaded into the
player again.

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REV (Reverse): Press and hold this button to reverse
quickly within a track. You will hear sound at a reduced
volume. Release it to play the passage. The display will
show elapsed time.
FWD  (Forward): Press and hold this button to
advance quickly within a track. You will hear sound at a
reduced volume. Release it to play the passage. The
display will show elapsed time.
RPT (Repeat): With repeat, you can repeat one track or
an entire disc. To use repeat, do the following:

To repeat the track you are listening to, press and
release the RPT button. RPT will appear on the
display. Press RPT again to turn it off.

To repeat the disc you are listening to, press and hold
the RPT button for two seconds. RPT will appear on
the display. Press RPT again to turn if off.RDM (Random): With random, you can listen to the
tracks in random, rather than sequential order, on one
disc or on all of the discs. To use random, do one of
the following:

To play the tracks on the disc you are listening to in
random order, press and hold RDM for more than
two seconds. You will hear a beep and RANDOM
ONE will appear on the display. Press RDM again to
turn if off.

Press and release the RDM button to play the tracks
on all of the discs that are loaded, in random order.
RANDOM ALL will appear on the display. Press
RDM to turn it off.
AUTO EQ (Automatic Equalization): Press AUTO
EQ to select the desired preset equalization setting while
playing a compact disc. The equalization will be
automatically set whenever you play a compact disc.
See ªAUTO EQº listed previously for more information.

3-53

SEEK : To seek, press the left arrow while playing
a CD to go to the start of the current track, if more than
ten seconds have passed. Press the right arrow to go to
the next track. If you press the button more than once,
the player will continue moving backward or forward
through the disc.


SCAN : To scan one disc, press and hold either
SCAN arrow for more than two seconds until SCAN
appears on the display and you hear a beep. Use this
feature to listen to each track of the currently selected
disc for ten seconds. The sound will mute while
scanning. SCAN will appear on the display. Press either
SCAN arrow again, to stop scanning.
To scan all loaded discs, press and hold either SCAN
arrow for more than four seconds until DISC SCAN
appears on the display and you hear a beep. Use this
feature to listen to the first track, for ten seconds for
each disc loaded. The sound will mute while scanning to
the next track. DISC SCAN will appear on the display.
Press either SCAN arrow again, to stop scanning.P
-TYPE (Program Type): Press this knob to see
how long the current track has been playing. To change
what is normally shown on the display (track or elapsed
time), press the knob until you see the display you want,
then hold the knob until the display flashes.
AM FM: Press this button to play the radio when a
disc(s) is in the player.
Using Song List Mode
The integrated six
-disc CD changer has a feature called
song list. This feature is capable of saving 20 track
selections.
To save tracks into the song list feature, perform the
following steps:
1. Turn the disc player on and load it with at least one
disc. See ªLOAD CDº listed previously in this
section for more information.
2. Check to see that the disc changer is not in song list
mode. S
-LIST should not appear in the display. If
S
-LIST is present, press the SONG LIST button to
turn it off.

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3. Select the desired disc by pressing the numbered
pushbutton and then use the SEEK SCAN right
arrow button to locate the track that you want to
save. The track will begin to play.
4. Press and hold the SONG LIST button for two or
more seconds to save the track into memory. When
SONG LIST is pressed a beep will be heard
immediately. After two seconds of pressing SONG
LIST continuously, two beeps will sound to confirm
that the track has been saved.
5. Repeat Steps 3 and 4 for saving other selections.
If you attempt to save more than 20 selections, S
-LIST
FULL will appear on the display.
To play the song list, press the SONG LIST button. One
beep will be heard and S
-LIST will appear on the
display. The recorded tracks will begin to play in the
order that they were saved.
You may seek through the song list by using the SEEK
SCAN arrows. Seeking past the last saved track will
return you to the first saved track.To delete tracks from the song list, perform the
following steps:
1. Turn the disc player on.
2. Press the SONG LIST button to turn song list on.
S
-LIST will appear on the display.
3. Press the SEEK SCAN arrows to select the desired
track to be deleted.
4. Press and hold the SONG LIST button for two
seconds. When pressing SONG LIST, one beep will
be heard immediately. After two seconds of pressing
the SONG LIST button continuously, two beeps will
be heard to confirm that the track has been deleted.
After a track has been deleted, the remaining tracks are
moved up the list. When another track is added to the
song list, the tracks will be added to the end of the list.

3-55
To delete the entire song list, perform the
following steps:
1. Turn the disc player on.
2. Press the SONG LIST button to turn song list on.
S
-LIST will appear on the display.
3. Press and hold the SONG LIST button for more than
four seconds. A beep will be heard, followed by
two beeps after two seconds and a final beep will be
heard after four seconds. S
-LIST EMPTY will
appear on the display indicating that the song list has
been deleted.
If a disc is ejected, and the song list contains saved
tracks from that disc, those tracks are automatically
deleted from the song list. Any tracks saved to the song
list again are added to the bottom of the list.
To end song list mode, press the SONG LIST button.
One beep will be heard and S
-LIST will be removed
from the display.Compact Disc Messages
CHECK CD: If this message appears on the radio
display, it could be due to one of the following reasons:

The road is too rough. The disc should play when the
road is smoother.

The disc is dirty, scratched, wet or upside down.

The air is very humid. If so, wait about an hour and
try again.
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 can't 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.

3-57
3 NEXT: Press this pushbutton or the right SEEK arrow
(in the direction that the lighted tape direction arrow
points) to search for the next selection. The tape
direction arrow will blink during SEEK operation and
the sound is muted in this mode.
REV 4 (Reverse): Press this pushbutton to rapidly
reverse the tape. The tape will rapidly reverse to the
beginning of the cassette or until you press this
pushbutton again. The radio plays the last selected
station during reverse operation.
5: Press this pushbutton to turn Dolby NR on and
off. Dolby NR is active when a tape is inserted in the
remote cassette. The double
-D symbol will appear on
the display.
Dolby Noise Reduction is manufactured under a license
from Dolby Laboratories Licensing Corporation. Dolby
and the double
-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.
FWD 6 (Forward): Press this pushbutton to rapidly
advance the tape. The tape will rapidly advance to the
end of the cassette or until you press this pushbutton
again. The radio plays the last selected station during
forward operation.AM FM: Press this button to listen to the radio
when a tape is playing. The inactive tape will remain in
the player.
TAPE AUX (Auxiliary): Press this button to play a
tape when listening to the radio. The lighted arrow will
appear next to the symbol and show the direction of play
when a tape is active.
Remote Cassette Tape Player Controls
The following functions are controlled by the remote
cassette tape player:
PROG (Program): Press this button on the remote
player to go from one side of the tape to the other.
EJECT: Press this button on the remote player to
remove the tape. EJECT can be used with either the
ignition or radio off. Also, you must press EJECT before
loading a cassette with the radio off to allow loading.

3-58 Theft-Deterrent Feature (If Equipped)
THEFTLOCK
is designed to discourage theft of your
radio. It works by using a secret code to disable all radio
functions whenever battery power is removed.
The THEFTLOCK feature for the radio may be used or
ignored. If ignored, the system plays normally and the
radio is not protected by the feature. If THEFTLOCK is
activated, your radio will not operate if stolen.
When THEFTLOCK is activated, the radio will display
LOC to indicate a locked condition anytime battery
power has been interrupted. If your battery loses power
for any reason, you must unlock the radio with the secret
code before it will operate.
Activating the Theft
-Deterrent Feature
The instructions which follow explain how to enter your
secret code to activate the THEFTLOCK system. It is
recommended that you read through all nine steps
before starting the procedure.
If you allow more than 15 seconds to elapse between
any steps, the radio automatically reverts to time and
you must start the procedure over at Step 4.1. Write down any three or four
-digit number from
000 to 1999 and keep it in a safe place separate from
the vehicle.
2. Turn the ignition to ACCESSORY or RUN.
3. Turn the radio off.
4. Press the 1 and 4 pushbuttons at the same time. Hold
them down until
--- shows on the display. Next you
will use the secret code number which you have
written down.
5. Press MN and 000 will appear on the display.
6. Press MN again to make the last two digits agree
with your code.
7. Press HR to make the first one or two digits agree
with your code.
8. Press AM FM after you have confirmed that the
code matches the secret code you have written down.
The display will show REP to let you know that you
need to repeat Steps 5 through 7 to confirm your
secret code.
9. Press AM FM and this time the display will show
SEC to let you know that your radio is secure. The
LED indicator by the volume knob will begin
flashing when the ignition is turned off.

3-59
Unlocking the Theft-Deterrent Feature After a
Power Loss
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on. LOC will appear on the display.
2. Press MN and 000 will appear on the display.
3. Press MN again to make the last two digits agree
with your code.
4. Press HR to make the first one or two digits agree
with your code.
5. Press AM FM after you have confirmed that the code
matches the secret code you have written down. The
display will show SEC, indicating the radio is now
operable and secure.
If you enter the wrong code eight times, INOP will
appear on the display. You will have to wait an hour
with the ignition on before you can try again. When you
try again, you will only have three chances to enter the
correct code before INOP appears.
If you lose or forget your code, contact your dealer.Disabling the Theft-Deterrent Feature
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition to ACCESSORY or RUN.
2. Turn the radio off.
3. Press the 1 and 4 pushbuttons at the same time.
Hold them down until SEC shows on the display.
4. Press MN and 000 will appear on the display.
5. Press MN again to make the last two digits agree
with your code.
6. Press HR to make the first one or two digits agree
with your code.
7. Press AM FM after you have confirmed that the code
matches the secret code you have written down. The
display will show
---, indicating that the radio is no
longer secured.
If the code entered is incorrect, SEC will appear on the
display. The radio will remain secured until the correct
code is entered.
When battery power is removed and later applied to a
secured radio, the radio won't turn on and LOC will
appear on the display.
To unlock a secured radio, see ªUnlocking the
Theft
-Deterrent Feature After a Power Lossº earlier in
this section.

3-60 Theft-Deterrent Feature RDS Radios
(If Equipped)
THEFTLOCK
is designed to discourage theft of your
radio. The feature works automatically by learning a
portion of the Vehicle Identification Number (VIN).
If the radio is moved to a different vehicle, it will not
operate and LOCKED or LOC will be displayed.
When the radio and vehicle are turned off, the blinking
red light indicates that THEFTLOCK is armed.
With THEFTLOCK activated, your radio will not
operate if stolen.
Understanding Radio Reception
AM
The range for most AM stations is greater than for FM,
especially at night. The longer range, however, can
cause stations to interfere with each other. AM can pick
up noise from things like storms and power lines. Try
reducing the treble to reduce this noise if you ever get it.
FM Stereo
FM stereo will give you the best sound, but FM signals
will reach only about 10 to 40 miles (16 to 65 km). Tall
buildings or hills can interfere with FM signals, causing
the sound to come and go.

3-62 Care of Your Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight and
extreme heat. If they aren't, they may not operate
properly or may cause failure of the tape player.
Your tape player should be cleaned regularly after every
50 hours of use. Your radio may display CLN to indicate
that you have used your tape player for 50 hours without
resetting the tape clean timer. If this message appears on
the display, your 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 your tapes and
player. If you notice a reduction in sound quality, try a
known good cassette to see if it is the tape or the tape
player at fault. If this other cassette has no improvement
in sound quality, clean the tape player.
The recommended cleaning method for your cassette
tape player is the use of a scrubbing action,
non
-abrasive cleaning cassette with pads which scrub
the tape head as the hubs of the cleaner cassette turn.
The recommended cleaning cassette is available through
your dealer (GM Part No. 12344789).When cleaning the cassette tape player with the
recommended non
-abrasive cleaning cassette, it is
possible that the cassette may eject, because the cut tape
detection feature on your radio may recognize it as a
broken tape. To prevent the cleaning cassette from being
ejected, use the following steps.
If your vehicle is equipped with the AM
-FM Stereo with
Cassette Tape Player do the following:
1. Turn the ignition to RUN or ACCESSORY.
2. Turn the radio on.
3. Insert the scrubbing action cleaning cassette.
4. Within five seconds, press and hold the REV and
FWD buttons at the same time for three seconds. The
tape symbol will flash on the display, showing that
the cut tape detection feature is no longer active.
5. Eject the cleaning cassette after the manufacturer's
recommended cleaning time.
If your vehicle is equipped with the AM
-FM Stereo with
Cassette Tape Player and Automatic Tone Control do the
following:
1. Turn the ignition to RUN or ACCESSORY.
2. Turn the radio off.