2002 CHEVROLET TRAIL BLAZER audio

3-47
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.Adjusting the Speakers
AUDIO (Balance/Fade): The AUDIO control
adjusts balance and fade. To adjust balance, press the
AUDIO control until BAL appears on the display.
Turn the control to adjust the sound to the left or right
speakers. The middle position balances the sound
between the speakers.
To adjust fade, press and hold the AUDIO control until
FAD appears on the display. Turn the control to adjust
the sound to the front or rear speakers. The middle
position balances the sound between the speakers.
To set the balance and fade to the middle position, select
balance or fade and press and hold the AUDIO control.
The radio will beep once and will set the display level to
the middle position.
To set all tone and speaker controls to the middle
position, press and hold the AUDIO control when
tone or speaker controls are not active. The radio
will produce one beep and CENTERED will appear
on the display.

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Using RDS
Your audio system is equipped with a Radio Data
System (RDS). RDS mode gives you many useful new
features. With RDS, the radio can do the following:

Seek only to stations with the types of programs you
want to listen to,

seek to stations with traffic announcements,

receive announcements concerning local and
national emergencies, and

receive and display messages from radio stations.
RDS features are only available for use on FM stations
which broadcast RDS information. The RDS features of
your radio rely upon receiving specific RDS information
from these stations. These features will only work when
the RDS 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, please contact the radio station.
When you are tuned to an RDS station, the station
name will appear on the display, instead of the
frequency. Most RDS stations provide their station
name, the time of day and a Program Type (PTY) for
their current programming.P-TYPE: This button is used to turn on and off
Program Type (PTY) selections. PTY and the light next
to the button will turn on. The last selected PTY will
appear on the display for five seconds.
Turn the TUNE RCL P
-TYPE control to select the PTY
you want to listen to. Press the SEEK SCAN arrows to
find radio stations for the PTY you want to listen to. The
last PTY selected will be used for seek or scan modes.
If a station with the selected PTY is not found, NONE
FOUND will appear on the display. If both P
-TYPE and
TRAF are on, the radio will search for stations with
traffic announcements and the selected PTY.
To use the P
-TYPE interrupt feature, press and hold the
P
-TYPE button until you hear a beep on the PTY you
want to interrupt on. When you are listening to a compact
disc, the last selected RDS FM station will interrupt play
if that selected program type format is broadcast.
AM FM: The AM FM button operates the alternate
frequency feature. Alternate frequency allows the radio
to switch to a stronger station with the same program
type. Press and hold AM FM for two seconds to turn
alternate frequency on. AF ON will appear on the
display. The radio may switch to stronger stations.
Press and hold AM FM again for two seconds to turn
alternate frequency off. AF OFF will appear on the
display. The radio will not switch to other stations.

3-55 Rear Seat Audio (If Equipped)
This feature allows rear seat passengers to listen to any
of the music sources including AM
-FM, cassette tapes
or CDs and to use automatic tone control. The rear seat
passengers can only control the music sources that the
front seat passengers are not listening to. For example,
rear seat passengers may listen to a cassette tape or CD
through headphones while the driver listens to the radio
through the front speakers. The rear seat passengers
have control of the volume for each set of headphones.
The front seat audio controls always override the rear
seat audio controls.This feature is intended for rear seat passengers.
The following functions are controlled by the rear seat
audio system buttons:
PWR: Press this button to turn the rear seat audio
system on or off. The rear speakers will be muted when
the power is turned on unless you have a Bose


equipped vehicle. You may operate the rear seat audio
functions even when the primary radio power is off.
VOL: Turn the knob clockwise to increase volume and
counterclockwise to decrease volume. The left VOL
knob controls the left headphone and the right VOL
knob controls the right headphone.
PROG: With a cassette tape in the player and the radio
playing, press this button to play a cassette tape. Press
PROG to switch between the tape and compact disc if
both are loaded. Press PROG again to return to the radio
when a cassette tape or compact disc is playing. The
inactive tape or CD will remain safely inside the radio
for future listening.
SEEK: Press the SEEK button to tune to the next
station and stay there. The display will show your
selection. The sound will mute while seeking.
Press and hold the SEEK button to seek through
your preset radio stations set on your primary radio
pushbuttons. The display will show your selections.

3-56
The SEEK button is inactive if the AM FM mode on
the front radio is in use.
While listening to a cassette tape, press the SEEK button
to hear the next selection on the tape. Press and hold the
SEEK button to go to the other side of the tape. The
SEEK button is inactive if the tape mode on the front
radio is in use.
While listening to a CD, press the SEEK button to
hear the next selection on the CD. The SEEK button
is inactive if the CD mode on the front radio or the
CD changer is in use.
Theft-Deterrent Feature RDS Radios
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 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.
Audio Steering Wheel Controls (If Equipped)
If your vehicle has this
feature, certain radio
functions can be
operated by using the
controls on your
steering wheel.
AM/FM: Press this control to tune to the next radio
station. When playing a cassette tape or compact disc,
press AM/FM to switch to the radio.
(Program): Press this control to tune to the next
preset radio station. When playing a cassette tape, press
program to hear the other side of a tape that is playing.
When using the CD changer, this control will seek to the
next selection.
(Volume): Press the up or down arrow to increase
or decrease volume.

3-57 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.
Tips About Your Audio System
Hearing damage from loud noise is almost undetectable
until it is too late. Your hearing can adapt to higher
volumes of sound. Sound that seems normal can be loud
and harmful to your hearing. Take precautions by
adjusting the volume control on your radio to a safe
sound level before your hearing adapts to it.To help avoid hearing loss or damage do the following:

Adjust the volume control to the lowest setting.

Increase volume slowly until you hear comfortably
and clearly.
NOTICE:
Before you add any sound equipment to your
vehicle
-- like a tape player, CB radio, mobile
telephone or two
-way radio -- be sure you can
add what you want. If you can, it's very
important to do it properly. Added sound
equipment may interfere with the operation of
your vehicle's engine, Delphi Delco Electronics
radio or other systems, and even damage them.
Your vehicle's systems may interfere with the
operation of sound equipment that has been
added improperly.
So, before adding sound equipment, check with
your dealer and be sure to check Federal rules
covering mobile radio and telephone units.

6-34
Battery
Your new vehicle comes with a maintenance free
ACDelco
battery. When it's time for a new battery,
get one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
battery. See ªEngine Compartment Overviewº in the
Index for battery location.
WARNING: Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Vehicle Storage
If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
-) cable from
the battery. This will help keep your battery from
running down.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
-Deterrent
Featureº in the Index.

7-15
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See ªEngine Oilº in the Index for
further details.Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the
Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
Don't forget to check your spare tire. See ªTiresº in the
Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the Index
for further details.