display GMC ENVOY 2002 Service Manual

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VOL PWR: Turn this control clockwise to increase
volume when RDS interrupts regular play. Turn it
counterclockwise to decrease volume.
P
-TYPE LIST AUDIO: Turn this control clockwise
or counterclockwise to select the Program Type (PTY)
you want to listen to. TYPE and a PTY will appear on
the display. Press the SEEK TYPE button and the radio
will seek to the first RDS broadcaster of the selected
program type. 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.
AM FM: The AM FM button operates the alternate
frequency feature. This feature allows the radio to
switch automatically to a stronger station with the same
programming. Alternate frequency is off by default from
the factory. Press and hold AM FM for two seconds to
turn alternate frequency on or off. AF ON or AF OFF
will appear on the display and the radio will beep once.
The radio will not switch automatically to other stations
when alternate frequency is off.SEEK TYPE: Press this button to go to a station with
the last selected PTY; TYPE and the last selected PTY
will appear on the display, if it is not already showing.
Press SEEK TYPE a second time to seek. If a station
with the selected PTY is not found, the radio will return
to the original station and display NONE.
RDS Radio Announcements
(Alert): Alert warns of national or local emergencies.
You will not be able to turn off alert announcements.
ALERT! appears on the display when an alert
announcement plays. When an alert announcement
comes on the tuned radio station, you will hear it, even
if the volume is muted or a cassette tape or compact disc
is playing. If the cassette tape or compact disc player is
playing, play will stop for the announcement and resume
when the announcement is finished.
This function will only work during actual emergency
broadcasts, and will not work during tests of the
emergency broadcast system. This feature is not
supported by all RDS stations.

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INFO: If the current station has a message, the INFO
icon will appear on the display. These text messages are
from the RDS broadcaster to the listening public and
may be general information such as artist and song title,
call in phone numbers, etc. Press this button to see
the message. If the whole message does not appear
on the display, parts of the message will appear every
three seconds until the message is completed. To scroll
through the message at your own speed, press the INFO
button again for less than one second. A new group of
words will appear on the display. Once the complete
message has been displayed, the INFO icon will
disappear from the display until another new message is
received. The old message can be displayed by pressing
the INFO button until a new message is received or a
different station is tuned to.
TRAF: Press this button to receive traffic
announcements. If the current tuned station does not
broadcast traffic announcements, the radio will seek
to a station that does. The TRAF icon will flash on the
display. When the radio finds a station that broadcasts
traffic announcements, it will stop. If no station is found,
NO TRAF will appear on the display.
Your radio can be programmed to interrupt the playback
of a cassette tape, CD or FM radio by enabling the
traffic interrupt feature. Press the TRAF button once toseek to an RDS station that supports the traffic interrupt
feature if the current tuned station does not. The TRAF
icon will flash on the display when seeking for a station
that supports traffic interrupt. When the traffic interrupt
feature is on, TRAF will appear on the display.
When a traffic announcement comes on the tuned radio
station, you will hear it, even if the volume is muted or a
cassette tape or compact disc is playing. The TRAF icon
and TRAFFIC will appear on the display while the
traffic announcement plays. If the cassette tape or
compact disc player was being used, the tape or compact
disc will stay in the player and resume play at the point
where it stopped.
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 but a garbled sound, the
tape may not be in squarely. Press EJT to remove the
tape and start over.

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While the tape is playing, use the volume, fade, balance,
treble, bass, 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 when the ignition is off, first
press EJT or DISP.
If an error appears on the display, see ªCassette Tape
Messagesº later in this section.
1 PREV: Press this button or the left SEEK PSCAN
arrow to go to the previous selection on the tape if the
selection has been playing for less than three seconds.
If the 1 PREV button or the left SEEK PSCAN arrow is
pressed and the current selection has been playing for
more than 13 seconds, it will go to the beginning of the
current selection. If the 1 PREV button or the left SEEK
PSCAN arrow is pressed and 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. SEEK and a ª
-1º will appear on the display while
the cassette player is in the previous mode. If 1 PREV or
the left SEEK PSCAN arrow is pressed additional times
or held, the radio will go to the displayed number of
previous selections up to ª9º. SEEK and a negative
number will appear on the display.Your tape must have at least three seconds of silence
between each selection for previous to work. The sound
will mute while seeking.
2 NEXT: Press this button to go to the next selection on
the tape. If you press the button more than once, the
player will continue moving forward through the tape.
SEEK and a positive number will appear on the display.
Your tape must have at least three seconds of silence
between each selection for next to work. To forward
through each selection press the right SEEK PSCAN
arrow. The sound will mute while seeking.
3 REV: Press this button to reverse the tape rapidly.
Press it again to return to playing speed. The radio will
play the last selected station while the tape reverses. The
station frequency and REV will appear on the display.
You may select stations during reverse operation by
using TUNE DISP and the SEEK PSCAN arrows.
4 FWD: Press this button to advance quickly to another
part of the tape. Press the button again to return to
playing speed. The radio will play the last selected
station while the tape advances. The station frequency
and FWD will appear on the display. You may select
stations during forward operation by using TUNE DISP
and the SEEK PSCAN arrows.

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5 SIDE: Press this button to play the other side of
the tape.
6
RDM: Press this button to reduce background
noise. NR ON will appear on the display. Press it again
to turn Dolby off. NR OFF 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.
 SEEK PSCAN
: SEEK PSCAN (right arrow) is
the same as 2 NEXT, and SEEK PSCAN (left arrow) is
the same as 1 PREV. If the button is held or pressed
more than once, the player will continue moving
forward or backward through the tape. SEEK and a
positive or negative number will appear on the display.
AM FM: Press this button to play the radio when a
tape is in the player. The tape will stop but remain in
the player.
TAPE CD: With a tape in the player and the radio
playing, press this button to play a tape. Press AM FM
to return to the radio when a tape is playing. Press TAPE
CD to switch between the tape and compact disc if both
are loaded. The inactive tape or CD will remain safely
inside the radio for future listening.
EJT: Press this button to remove a tape. The radio
will play. Eject may be activated with the radio off.
Cassette tapes may be loaded with the radio off if this
button is pressed first.
Cassette Tape Messages
(CHK TAPE): If CHK TAPE appears on the radio
display, the tape won't play because of one of the
following errors.
The tape is tight and the player can't 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.

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(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. See ªCare of
Your Cassette Tape Playerº in the Index. After you clean
the player, press and hold the cassette eject button for
five seconds to reset the CLEAN indicator. The radio
display will display CLEANED to show the indicator
was reset.
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer.
Tight/Loose Tape Sensor Defeat
With the radio off and the ignition on, press and hold the
TAPE CD button to disable the tight/loose tape sensing
feature to enable play of some tape head cleaners and
portable CD adapters. The radio will display READY
and flash the cassette icon. The tight/loose tape sensing
feature will then be disabled until the next time a
cassette is ejected.Playing a Compact Disc
Insert a disc partway into the slot, label side up. The
player will pull it in and the disc should begin playing.
The display will show the CD symbol. If you want to
insert a compact disc with the ignition off, first press
TUNE DISP or EJT.
If an error appears on the display, see ªRadio/Compact
Disc Messagesº later in this section.
1 PREV: Press this button or the left SEEK PSCAN
arrow to go to the previous track if the current selection
has been playing for less than eight seconds. If the
1 PREV button or the left SEEK PSCAN arrow is
pressed and the current selection has been playing for
more than eight seconds, it will go to the beginning of
the current selection. TRACK and the track number will
appear on the display. If you hold the 1 PREV button or
left SEEK PSCAN arrow or press it more than once, the
player will continue moving back through the disc. The
sound will mute while seeking.
2 NEXT: Press this button or the right SEEK PSCAN
arrow to go to the next track. TRACK and the track
number will appear on the display. If you hold the
2 NEXT button or the right SEEK PSCAN arrow
or press it more than once, the player will continue
moving forward through the disc. The sound will mute
while seeking.

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3 REV: Press and hold this button to reverse quickly
within a track. Press and hold this button 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.
4 FWD: Press and hold this button to advance quickly
within a track. Press and hold this button 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.
6
RDM: Press this button 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 6 RDM again to turn off random play. RDM OFF
will appear on the display.
SEEK PSCAN
: Press the left SEEK PSCAN
arrow to go to the start of the current or previous track.
Press the right SEEK PSCAN button to go to the start of
the next track. If either of the SEEK PSCAN arrows is
held or pressed more then once, the player will continue
moving backward or forward through the CD.TUNE DISP: Press this control to see how long the
current track has been playing. ET and the elapsed time
will appear on the display. To change what is normally
shown on the display (track or elapsed time), press the
control until you see the display you want, then hold
the control for two seconds. The radio will produce
one beep.
AM FM: Press this button to play the radio when
a disc is in the player. The disc will stop but remain in
the player.
CD AUX: With a CD in the player and the radio
playing, press this button to play a CD. Press AM FM
to return to the radio when a CD is playing. The inactive
CD will remain safely inside the radio for
future listening.
EJT: Press this button to remove the disc.
The radio will play. Eject may be activated with either
the ignition or radio off. CDs may be loaded with the
radio and ignition off if this button is pressed first.

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Compact Disc Messages
(Err): If you're driving on a very rough road or if it's
very hot, the disc may not play and Err (error) may
appear on the display. When the road becomes smooth
or the temperature returns to normal, the disc should
play. If the disc comes out, it could be one of
the following:

The disc is upside down.

It is dirty, scratched or wet.

It is very humid. (If so, wait about an hour
and try again.)
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer.
(CAL ERR): This message is displayed when the radio
has not been calibrated properly for the vehicle. You
must return to the dealership for service.
(LOCKED): This message is displayed when the
THEFTLOCK
 system has locked up. You must return
to the dealership for service.
AM-FM Stereo with 6-Disc Compact
Disc Player with Programmable
Equalization and Radio Data System (RDS)
(If Equipped)
Standard radio--Bose not shown
Playing the Radio
VOLUME PWR: Press this control to turn the system
on and off. To increase volume, turn the control
clockwise. Turn it counterclockwise to decrease volume.

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AUTO VOL: 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, MAX or OFF.
Each choice allows for more volume compensation at
faster vehicle speeds. Then, as you drive, automatic
volume automatically increases the volume, as
necessary, to overcome noise at any particular 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.
If your vehicle has the Bose radio, your audio system
monitors the noise inside your vehicle. Then,
automatically adjusts the volume so that it always
sounds the same to you. To use automatic volume, press
the AUTO VOL button until AVOL ON appears on the
display. To turn automatic volume off, press the AUTO
VOL button until AVOL OFF appears on the display.
Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display shows your selection.
TUNE RCL P
-TYPE: Turn this control to select
radio stations.

SEEK SCAN: To seek, press the right or left
arrow briefly to go to the next or previous station and
stay there. The sound will mute while seeking.
To scan, press and hold either SEEK SCAN arrow for
two seconds until SC appears on the display and you
hear a beep. Use scan to listen to stations for a few
seconds. The radio will go to a station, stop for a few
seconds, then go on to the next station. Press either
SEEK SCAN arrow again to stop scanning. If you press
SEEK SCAN for more than four seconds, the radio
will change to preset scan mode. The sound will mute
while scanning.
To scan your preset pushbuttons, press and hold either
SEEK SCAN arrow for more than four seconds,
PRESET SCAN will appear on the display. You will
hear a double beep and the P will blink with the preset
number. Use PRESET SCAN to listen to each of your
preset stations for a few seconds. The radio will go to
a preset station stored on your pushbuttons, stop for a
few seconds, then go on to the next preset station.
Press either SEEK SCAN arrow again to stop
scanning presets.

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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 the band.
3. Tune in the desired station.
4. Press AUTO EQ to select the equalization that best
suits the type of station selected.
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 also be
automatically selected for that pushbutton.
6. Repeat the steps for each pushbutton.Setting the Tone (Bass/Treble)
AUDIO: To set the bass, press the AUDIO control until
BASS appears on the display. Turn the control to
increase or decrease bass. When you use this control, the
radio's tone setting will switch to custom.
To set the bass to the middle position, select BASS and
press and hold the AUDIO control. The radio will
produce one beep and set the display level to zero. To
set all tone and speaker controls to the middle position,
press and hold the AUDIO control when no tone or
speaker control is active. The radio will produce one
beep and CENTERED will appear on the display.
To set the midrange, press the AUDIO control until MID
appears on the display. Turn the control to increase or
decrease midrange. When you use this control, the
radio's tone setting will switch to custom.
To set the midrange to the middle position, select MID
and press and hold the AUDIO control. The radio will
produce one beep and set the display level to zero.

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To set all tone and speaker controls to the middle
position, press and hold the AUDIO control when no
tone or speaker control is active. The radio will produce
one beep and CENTERED will appear on the display.
To set the treble, press the AUDIO control until TREB
appears on the display. Turn the control to increase or
decrease treble. When you use this control, the radio's
tone setting will switch to custom. If a station is weak
or noisy, you may want to decrease the treble.
To set treble to the middle position, select TREB and
press and hold the AUDIO control. The radio will
produce one beep and set the display level to zero.
To set all tone and speaker controls to the middle
position, press and hold the AUDIO control when no
tone or speaker control is active. The radio will produce
one beep and CENTERED will appear on the display.
AUTO EQ: This feature allows you to choose preset
bass, midrange and treble equalization settings designed
for country, jazz, talk, pop, rock and classical stations.
The setting last chosen will appear on the display when
you first press AUTO EQ. Each time you press this
button, another setting will appear on the display and
AUTO EQ will switch to one of the preset settings
previously listed.To return to the manual mode (CUSTOM), press the
AUTO EQ button until CUSTOM appears on the
display. Then you will be able to manually adjust the
bass, midrange and treble using the AUDIO button. To
find out how to do this, see Setting the Tone following.
If your vehicle has the Bose radio, your audio system
allows you to choose from four different equalization
settings: talk, driver, normal and spatial. These settings
can be used while listening to the radio or the CD player.
Press the AUTO EQ button to scroll through your
choices. Select TALK when listening to non
-musical
material such as news, talk shows, sports broadcasts and
books on tape. This settings makes spoken words sound
very clear. Select DRIVER to give the driver the best
possible sound qualities. Select NORMAL to enhance
the stereo effect. Select SPATIAL to make the listening
space seem larger. When AUTO EQ NORMAL is
displayed, the system will provide the best overall Bose
performance. The radio saves separate AUTO EQ
settings for each preset and source.