ignition GMC ENVOY 2002 Service Manual

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Service Four-Wheel-Drive Warning Light
(If Equipped)
United States Canada
This light should come on briefly when you turn on the
ignition, as a check to show you it is working.
The SERVICE 4WD light comes on to indicate that
there may be a problem with the drive system and
service is required. Malfunctions can be indicated by the
system before any problem is apparent, which may
prevent serious damage to the vehicle. This system is
also designed to assist your service technician in
correctly diagnosing a malfunction.
Check Gages Light
United States Canada
The CHECK GAGES light will come on briefly when
you are starting the engine.
If the light comes on and stays on while you are driving,
check your coolant temperature and engine oil pressure
gages to see if they are in the warning zones.

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Gate Ajar
United States Canada
If this light comes on, your liftgate or liftglass is ajar.
Try closing the liftgate or liftglass again. Never drive
with the liftgate or liftglass even partially open.
Fuel Gage
United States Canada
When the ignition is on, the fuel gage tells you about
how much fuel you have remaining.

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Here are four things that some owners ask about.
None of these show a problem with your fuel gage:

At the gas station, the gas pump shuts off before the
gage reads full.

It takes a little more or less fuel to fill up than the
gage indicated. For example, the gage may have
indicated the tank was half full, but it actually took a
little more or less than half the tank's capacity to fill
the tank.

The gage moves a little when you turn a corner or
speed up.

The gage doesn't go back to empty when you turn
off the ignition.
Low Fuel Light
The light next to the fuel gage will come on briefly
when you are starting the engine.
This light comes on when the fuel tank is low on fuel.
To turn it off, add fuel to the fuel tank. See ªFuelº in
the Index.
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.

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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.
Odometer
Press the trip information button until the odometer
appears on the display. This shows the total distance the
vehicle has been driven in either miles or kilometers.
Pressing the reset stem located on the instrument cluster
with the vehicle off will also display the odometer.Trip A and Trip B
Press the trip information button until TRIP A or TRIP B
is displayed. This shows the current distance traveled
since the last reset for each trip odometer in either miles
or kilometers. Both odometers can be used at the
same time.
Each trip odometer can be reset to zero separately by
pressing select while the desired trip odometer is
displayed. You can also reset the trip odometers with the
reset stem on the cluster. If you press and hold the reset
stem for four seconds, the display will show the distance
traveled since the last ignition cycle.
Timer
The DIC can be used as a stopwatch. Press the select
button while TIMER is displayed to start the timer. The
display will show the amount of time that has passed
since the timer was last reset (not including time the
ignition is off). Time will continue to be counted as long
as the ignition is on, even if another display is being
shown on the DIC. The timer will record up to 99 hours,
59 minutes and 59 seconds (99:59:59) after which the
display will roll back to zero.
To stop the counting of time, press the select button
briefly while TIMER is displayed.
To reset the timer to zero, press and hold the select
button while TIMER is displayed.

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Automatic Unlocking
Press the personalization button until AUTOMATIC
UNLOCKING appears in the display. To select your
personalization for automatic unlocking, press the select
button while AUTOMATIC UNLOCKING is displayed
on the DIC. Pressing the select button will scroll
through the following choices:

UNLOCK ALL IN PARK (default)

UNLOCK ALL AT KEY OUT

UNLOCK DOORS MANUALLY

UNLOCK DRIVER IN PARK
If you choose for all the doors to unlock in park,
all of the doors will unlock when the vehicle is shifted
into PARK (P).
If you choose for all the doors to unlock at key out,
all of the doors will unlock when the key is taken out
of the ignition.
If you choose for the doors to unlock manually,
the doors will not be unlocked automatically.
If you choose for the driver's door to unlock in park,
the driver's door will be unlocked when the vehicle is
shifted into PARK (P).Choose one of the four options and press the
personalization button while it is displayed on the DIC
to select it and move on to the next feature. For more
information on automatic door locks see ªProgrammable
Automatic Door Locksº in the Index.
Seat Position Recall (If Equipped)
Press the personalization button until SEAT POSITION
RECALL appears in the display. To select your
personalization for seat position recall, press the select
button while SEAT POSITION RECALL is displayed
on the DIC. Pressing the select button will scroll
through the following choices:

SEAT POSITION RECALL OFF (default)

SEAT POSITION RECALL AT KEY IN

SEAT POSITION RECALL ON REMOTE
If you choose seat recall off, the memory seat position
you saved will only be recalled when the memory
button 1 or 2 is pressed.
If you choose seat recall at key in, the memory seat
position you saved will be recalled when you put the key
in the ignition.

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Choose one of the four options and press the
personalization button while it is displayed on the DIC
to select it and move on to the next feature. For more
information on tilt mirror in reverse see ªCurb View
Assist Mirrorº in the Index.
Easy Exit Seat (If Equipped)
Press the personalization button until EASY EXIT
SEAT appears in the display. To select your
personalization for seat position exit, press the select
button while SEAT POSITION EXIT is displayed on
the DIC. Pressing the select button will scroll through
the following choices:

SEAT POSITION EXIT OFF (default)

SEAT POSITION EXIT ON
If you choose for the easy exit seat feature to be on,
the driver's seat will move to the exit position when the
key is removed from the ignition. If you choose for this
feature to be off, no seat exit recall will occur.
Choose one of the two options and press the
personalization button while it is displayed on the DIC
to select it and move on to the next feature. For more
information on seat position exit see ªMemory Seat and
Mirrorsº in the Index.Display Units (ENG/MET)
Press the personalization button until DISPLAY UNITS
appears in the display. To select English or metric, press
the select button while DISPLAY UNITS is displayed
on the DIC. Pressing the select button will scroll
through the following choices:

UNITS: ENGLISH

UNITS: METRIC KM/L

UNITS: METRIC L/100KM
If you choose English, all information will be displayed
in English units. For example, distance in miles and fuel
economy in miles per gallon.
If you choose metric KM/L, all information will be
displayed in metric units. For example, distance in
kilometers and fuel economy in KM/L.
If you choose metric L/100KM, all information will
be displayed in metric units. For example, distance in
kilometers and fuel economy in L/100KM.
Choose one of the three options and press the
personalization button while it is displayed on the DIC
to select it and end out of the personalization options.

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SERVICE AIR BAG
If there is a problem with the air bag system this
message will be displayed on the DIC. Have a qualified
technician inspect the system for problems. Pressing the
select button will acknowledge this message and clear it
from the DIC display.
SERVICE BRAKE SYSTEM
If a problem occurs with the brake system this message
will appear on the DIC. If this message appears, stop as
soon as possible and turn off the vehicle. Restart the
vehicle and check for the message on the DIC display.
If the message is still displayed, or appears again when
you begin driving, the brake system needs service.
TURN SIGNAL ON
If a turn signal is left on for 3/4 of a mile (1.2 km) this
message will appear on the display and you will hear a
chime. Move the turn signal/multifunction lever to the
off position. Pressing the select button will acknowledge
this message and clear it from the DIC display.REAR ACCESS OPEN
If the liftgate or liftglass is open while the ignition is in
RUN, this message will appear on the DIC and you
will hear a chime. Turn off the vehicle and check the
liftgate and liftglass. Restart the vehicle and check for
the message on the DIC display. Pressing the select
button will acknowledge this message and clear it from
the DIC display.
FUEL LEVEL LOW
If the fuel level is low in the vehicle's gas tank this
message will appear on the DIC and you will hear a
chime. Refuel as soon as possible. Pressing the select
button will acknowledge this message and clear it from
the DIC display.
CHANGE TRANS FLUID
If this message appears on the DIC it is time to
change the transmission fluid. Take you vehicle in for
service as soon as possible. Pressing the select button
will acknowledge this message and clear it from the
DIC display.

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CHECK OIL LEVEL
If the oil level in the vehicle is low this message will
appear on the DIC. Check the oil level and correct it as
necessary. You may need to need to let the vehicle cool
or warm up and cycle the ignition to be sure this
message will clear. Once the problem is corrected,
pressing the select button will clear this message from
the DIC display.
CHECK WASHER FLUID
If the washer fluid level is low this message will appear
on the DIC. Adding washer fluid will clear the message.
Pressing the select button will acknowledge this
message and clear it from the DIC display.
TRANS HOT IDLE ENGINE
If the transmission fluid in the vehicle gets hot this
message will appear on the DIC. Driving with the
transmission fluid temperature high can cause damage to
the vehicle. Stop the vehicle and let it idle to allow the
transmission to cool. This message will clear when the
fluid temperature reaches a safe level.ICE POSSIBLE
If the outside temperature reaches a level where ice
could form on the roadway, this message may appear
on the DIC. If the temperature rises to a safe level the
message will clear. Pressing the select button will
acknowledge this message and clear it from the
DIC display.
DRIVER DOOR AJAR
If the driver's door is not fully closed this message will
appear on the display and you will hear a chime. Stop
and turn off the vehicle, check the door for obstacles,
and close the door again. Check to see if the message
still appears on the DIC. Pressing the select button
will acknowledge this message and clear it from the
DIC display.

3-4 Automatic Dual Zone Comfort Control
System (Option)
With this system, you can select different comfort
control settings for the driver and passengers.
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.

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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 Compact Disc 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.
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.