2002 CHEVROLET TRAIL BLAZER ECO mode

2-68
3. When the HomeLink indicator light begins to blink
slowly (this may take up to 30 seconds), hold the
hand
-held transmitter about 1 to 3 inches (3 to 8 cm)
away from HomeLink and then press and hold the
transmit button on the hand
-held transmitter.
Continue to hold both buttons until the indicator
light on HomeLink begins to flash rapidly (this may
take up to 90 seconds).
If you have trouble programming HomeLink, make
sure that you have followed the directions exactly as
described and that the battery in the hand
-held
transmitter is not weak. If you still cannot program it,
move the hand
-held transmitter to the left or right or
forward or backward or flip it upside down. HomeLink
may not work with older garage door openers that do
not meet current Federal Consumer Safety Standards.
If you cannot program the transmitter after repeated
attempts, refer to ªTraining a Garage Door Opener
with Rolling Codesº later in this section or contact the
manufacturer of HomeLink at 1
-800-355-3515, or
on the internet at www.homelink.com.
Be sure to keep the original hand
-held transmitter in
case you need to erase and reprogram HomeLink.
Training a Garage Door Opener with a
ªRolling Codeº Feature (If Equipped)
If you have not previously programmed the hand-held
transmitter to HomeLink, see ªProgramming the
HomeLink Transmitterº listed previously. If you have
completed this programming already, you now need to
train the garage door opener motor head unit to
recognize HomeLink.
1. Find the ªLearnº or ªSmartº button on the garage
door opener motor head unit. The exact location and
color will vary by garage door opener brand. If you
have difficulty finding the ªLearnº or ªSmartº
button, refer to your garage door opener owner's
manual or contact the manufacturer of HomeLink at
1
-800-355-3515, or on the internet at
www.homelink.com. Because of the steps involved,
it may be helpful to have another person assist in
programming the transmitter.
2. Press the ªLearnº or ªSmartº button on the garage
door opener motor head unit. An indicator light will
begin to flash when the motor head unit enters the
training mode.
Following this step, you have 30 seconds to
start Step 3.

2-89
Driver Information Center (DIC)
(If Equipped)
The DIC display is located on the instrument panel
cluster above the steering wheel. The DIC can display
information such as the trip odometer, fuel economy and
personalization features.
A.Trip Information: This button will display the
odometer, trip odometer and the timer.
B.Fuel Information: This button will display the
current range, average fuel economy, instant fuel
economy and engine oil life.
C.Personalization: This button will change personal
options available on your vehicle.
D.Select: This button resets certain functions and turns
off or acknowledges messages on the DIC.
DIC Operation and Displays
The DIC comes on when the ignition is on. After a short
delay the DIC will display the current driver and the
information that was last displayed before the engine
was turned off.
If a problem is detected, a warning message will appear
on the display. Pressing the select button will
acknowledge any current warning or service messages.
The DIC has different modes which can be accessed
by pressing the four buttons on the DIC. These buttons
are trip information, fuel information, personalization
and select. The button functions are detailed in
the following.
Trip Information Button
Use the trip information button to scroll through the
odometer, TRIP A, TRIP B and TIMER.

3-5
Driver's Side Temperature Knob
The driver's side knob is used to adjust the temperature
of the air coming through the system on the driver's
side. Turn the knob counterclockwise to lower the cabin
temperature. The display will show the temperature
decreasing as you turn the knob counterclockwise. Turn
the knob clockwise to increase the cabin temperature.
The display will show the temperature increasing as you
turn the knob clockwise. When this knob is adjusted, the
word DRIVER will be displayed under the temperature
setting. If the passenger's set temperature has not been
adjusted, this knob controls both the driver's and
passenger's air temperature.
Passenger's Side Temperature Knob
The passenger's side knob can be used to change the
temperature of the air coming through the system on
the passenger's side of the vehicle. Turn the knob
counterclockwise to lower the cabin temperature. The
display will show the temperature decreasing as you turn
the knob counterclockwise. Turn the knob clockwise to
increase the cabin temperature. The display will show
the temperature increasing as you turn the knob
clockwise. When this knob is adjusted, only the word
PASS will be displayed under the temperature setting.
The temperature to the rear seat area is controlled by
using this knob.Once this knob is used, the passenger's set temperature
will remain independent of the driver's until the ignition
has been turned off.
Fan Switch
The switch with the fan symbol allows you to manually
adjust the fan speed. Press the up arrow to increase fan
speed and the down arrow to decrease fan speed.
MODE Button
Press this button to manually select the air delivery
mode to the floor, panel or windshield outlets. The
system will stay in the selected mode until the MODE
button is pressed again or the AUTO button is pressed.
Display
In full AUTO mode, the automatic climate control
system display will show the outside temperature,
labeled EXT for external temperature, and AUTO.
If you press the MODE button to select an air delivery
mode, the display will change to also show you the
current system mode. If you press the up or down
arrows on the fan switch, the display will change to
show the selected fan speed. After five seconds, the
display will change to show the EXT temperature and
the selected manual setting.

3-6
Automatic Operation
Press the AUTO button to set the system to
automatically control the air delivery mode, fan speed,
air temperature and recirculation operations. Whenever
you press AUTO, the display will change to show the
current driver's set temperature, automatic air delivery
mode and fan speed. Press the AUTO button again
within five seconds and the display will show the
passenger's set temperature. After five seconds the
display will change to the EXT (external) temperature
outside the vehicle.
When AUTO is selected, the air conditioning operation
and air inlet will be automatically controlled. The air
conditioning compressor will run when outside
temperature is over approximately 40
F (4
C).
The air inlet will normally be set to outside air. If it's
hot outside, the air inlet will automatically switch
to recirculated inside air to help quickly cool down
your vehicle.
To find your comfort setting, start with a 74
F (23
C)
temperature setting and allow about 20 minutes for the
system to regulate. Turn the driver's or passenger's side
temperature knob clockwise or counterclockwise to
adjust the temperature setting as necessary. If you
choose the temperature setting of 60
F (15
C), thesystem will remain at the maximum cooling setting and
fan speed. If you choose the temperature setting of 90
F
(32
C), the system will remain at the maximum heat
setting and fan speed. Choosing either maximum setting
will not cause the system to heat or cool any faster.
Be careful not to cover the sensor located on the top of
the instrument panel near the windshield. This sensor
regulates air temperature based on sun load, and also
turns on your headlamps.
The EXT (exterior) temperature sensor is located in the
front of the vehicle behind the grille. The displayed
temperature is most accurate after the vehicle has been
moving for a few minutes. If the vehicle is stopped and
then restarted within 2 1/2 hours, the sensor will be hot
from the engine heat. In this case, the temperature first
displayed will continue to be the temperature that was
displayed before the vehicle was turned off. The display
will update after the vehicle has been moving for a few
minutes and the sensor has a chance to cool down to the
actual temperature.
To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on the engine coolant
temperature. Pressing the fan switch will override this
delay and change the fan to a selected speed.

3-8 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
If your vehicle has the manual system, for quick
cool
-down on very hot days, use the airflow from the
panel outlets, press recirculation and air conditioning
with the temperature control in the blue area. If this max
air conditioning setting is used for long periods of time,
the air in your vehicle may become too cold and dry.
For normal cooling on hot days, use air conditioning
without recirculation with the temperature control in the
blue area.
If your vehicle has the automatic system, press the
AUTO button and the system will cool and dehumidify
the air inside the vehicle. Also while in this mode, the
system will maximize its performance by using
recirculation as necessary.
On cool, but sunny days, with the manual system or
through manual operation of the automatic system,
use bi
-level to deliver warm air to the floor and cooler
air to the instrument panel outlets. To warm or cool
the air delivered, turn the temperature control to the
desired setting.
Heating
If you have the manual system, on cold days use floor
with the temperature lever in the red area. If you have
the automatic system, press AUTO and adjust the
temperature by turning the temperature knob clockwise
or counterclockwise. You may also adjust the automatic
system manually by pressing the MODE button and
selecting floor. Again, adjust the temperature by turning
the temperature knob clockwise or counterclockwise.
With either system, outside air will be heated and sent
through the floor outlets. The heater works best if you
keep the windows closed while using it.
Defogging and Defrosting
On cool, humid days, use defog to keep the windshield
and side windows clear. Use the FRONT defrost button
to remove fog or ice from the windshield quickly in
extremely humid or cold conditions.
If your vehicle has the manual system, select defog and
adjust the fan speed to your comfort level. Turn the air
conditioning on to help dehumidify the air. Use front
defrost with the temperature toward the red area and the
fan control toward high.

3-13
Audio Systems
Your audio system has been designed to operate easily
and give years of listening pleasure. You will get the
most enjoyment out of it if you acquaint yourself with it
first. Find out what your audio system can do and how
to operate all its controls, to be sure you're getting the
most out of the advanced engineering that went into it.
Setting the Clock
Press and hold the HR or MN buttons, located below the
tune knob, for two seconds. Then press and hold HR
until the correct hour appears. AM or PM will appear on
the display. Press and hold MN until the correct minute
appears. The clock may be set with the ignition on or
off. The clock symbol will appear on the display in
time
-set mode.
To set the clock to the time of an FM station broadcasting
Radio Data System (RDS) information, press and hold
HR and MN at the same time for two seconds until
UPDATED and the clock symbol appear on the display.
If the time is not available from the station, NO UPDAT
will appear on the display instead.
RDS clock time is broadcast once a minute. Once you
have tuned to an RDS broadcast station, it may take a
few minutes before pressing and holding the HR MN
buttons will result in an update to the clock time.
AM-FM Stereo with Cassette Tape Player
with Radio Data System (RDS) and
Automatic Tone Control
Playing the Radio
VOL PWR: Press this control to turn the system on and
off. Turn this control clockwise to increase volume.
Turn it counterclockwise to decrease volume.

3-14
AUTO VOL: Your system has a feature called
Speed
-Compensated Volume (SCV). With SCV, your
audio system adjusts automatically to make up for road
and wind noise as you drive.
Set the volume at the desired level. Press AUTO VOL
to adjust the SCV. AVOL will appear on the display.
Each time you press AUTO VOL, another volume
setting (LOW, MEDIUM, HIGH or OFF) will appear
on the display. The volume level should always sound
the same to you as you drive. Each volume setting
allows for more volume compensation at faster vehicle
speeds. NONE will appear on the display if the radio
cannot determine the vehicle speed. If you don't want
to use SCV, select OFF.Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display will show your selection.
TUNE DISP: Turn this control to choose radio stations.
Pressing this control will also display an RDS station
frequency or program type when the radio is on.
Pressing this control when the ignition is off will display
the clock.
 SEEK PSCAN
: To seek, press the right arrow to
tune to the next station and the left arrow to tune to the
previous station and stay there.
To scan your preset stations, press and hold one of
the arrows for more than two seconds. The radio will
produce one beep. Use preset scan to listen to each of
your favorite stations stored on your pushbuttons for
a few seconds. The radio will scan through each of
the stations stored on your pushbuttons, except those
stations with weak reception. Press one of the arrows or
one of the pushbuttons again to stop scanning. SCAN
will be displayed whenever the tuner is in the preset
scan mode. The channel number (P1 through P6) will
appear with the frequency. In FM mode, this function
will scan through the current band such as FM1 or FM2.

3-20
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 and 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.
While the tape is playing, use the VOL PWR, the TUNE
DISP control, and the SEEK PSCAN control 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 TUNE DISP.
If an error appears on the display, see ªRadio/Cassette
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
-1 will appear on the display while the
cassette player is in the 1 PREV 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 9. SEEK and a negative
number will appear on the display. Your tape must
have at least three seconds of silence between each
selection for 1 PREV to work. The sound will mute
while seeking.