2002 GMC ENVOY headlamp

2-97
If you choose seat recall on remote, the memory seat
position you saved will be recalled when you unlock
the vehicle with the remote keyless entry transmitter.
Choose one of the three 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 recall see ªMemory Seat
and Mirrorsº in the Index.
Perimeter Lighting
Press the personalization button until PERIMETER
LIGHTING appears in the display. To select your
personalization for perimeter lighting, press the select
button while PERIMETER LIGHTING is displayed on
the DIC. Pressing the select button will scroll through
the following choices:

PERIMETER LIGHTING ON (default)

PERIMETER LIGHTING OFF
If you choose for perimeter lighting to be on, the headlamps
and back
-up lamps will come on for 40 seconds, if it is
dark enough outside, when you unlock the vehicle with
the remote keyless entry transmitter.
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.Remote Lock Feedback
Press the personalization button until REMOTE LOCK
FEEDBACK appears in the display. To select your
personalization for the feedback you will receive when
locking the vehicle with the remote keyless entry
transmitter, press the select button while REMOTE
LOCK FEEDBACK is displayed on the DIC.
Pressing the select button will scroll through the
following choices:

LOCK FEEDBACK: BOTH (default)

LOCK FEEDBACK: OFF

LOCK FEEDBACK: HORN

LOCK FEEDBACK: LAMPS
If you choose both, the parking lamps will flash each
time you press the button with the lock symbol on the
remote keyless entry transmitter and the horn will chirp
the second time you press the lock button.
If you choose off, there will be no feedback when
locking the vehicle.

2-99
Headlamps on at Exit
Press the personalization button until HEADLAMPS
ON AT EXIT appears in the display. To select your
personalization for how long the headlamps will stay on
when you turn off the vehicle, press the select button
while HEADLAMPS ON AT EXIT is displayed on the
DIC. Pressing the select button will scroll through the
following choices:

HEADLAMP DELAY: 10 SEC (default)

HEADLAMP DELAY: 20 SEC

HEADLAMP DELAY: 40 SEC

HEADLAMP DELAY: 60 SEC

HEADLAMP DELAY: 120 SEC

HEADLAMP DELAY: 180 SEC

HEADLAMP DELAY OFF
The amount of time you choose will be the amount of
time that the headlamps stay on after you turn off the
vehicle. If you choose off, the headlamps will turn off as
soon as you turn off the vehicle.
Choose one of the seven options and press the
personalization button while it is displayed on the DIC
to select it and move on to the next feature.Tilt Mirror in Reverse (If Equipped)
Press the personalization button until TILT MIRROR IN
REVERSE appears in the display. To select your
personalization for tilt mirror in reverse, press the select
button while TILT MIRROR IN REVERSE is displayed
on the DIC. Pressing the select button will scroll
through the following choices:

TILT MIRROR: OFF (default)

TILT MIRROR: PASSENGER

TILT MIRROR: DRIVER

TILT MIRROR: BOTH
If you choose off, neither outside mirror will be tilted
down when the vehicle is shifted into REVERSE (R).
If you choose passenger, the passenger's outside
mirror will be tilted down when the vehicle is shifted
into REVERSE (R).
If you choose driver, the driver's outside mirror
will be tilted down when the vehicle is shifted
into REVERSE (R).
If you choose both, the driver's and passenger's outside
mirror will be tilted down when the vehicle is shifted
into REVERSE (R).

3-6
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), the
system 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. Pushing the fan switch will override this
delay and change the fan to a selected speed.
Manual Operation
You may manually adjust the air delivery mode or fan
speed. Use the mode button to cycle through the
following four air delivery modes:
(Panel): This setting will deliver air to the
instrument panel outlets.
(Bi-Level): This setting will deliver warmer air to
the floor and cooler air to the instrument panel outlets.
(Floor): This setting will deliver air to the
floor outlets.
(Defog): This setting will deliver air to the floor
and windshield outlets.
OFF: Press this button to turn the system off. Some
fresh air will continue to flow through the vehicle from
the floor outlets. The system will try to maintain the
previously chosen temperature setting.

4-21 Driving Uphill
Once you decide you can safely drive up the hill, you
need to take some special steps.

Use a low gear and get a firm grip on the
steering wheel.

Get a smooth start up the hill and try to maintain
your speed. Don't use more power than you need,
because you don't want your wheels to start spinning
or sliding.

Try to drive straight up the hill if at all possible.
If the path twists and turns, you might want to find
another route.
CAUTION:
Turning or driving across steep hills can be
dangerous. You could lose traction, slide
sideways, and possibly roll over. You could be
seriously injured or killed. When driving up hills,
always try to go straight up.

Ease up on your speed as you approach the top of
the hill.

Attach a flag to the vehicle to make you more visible
to approaching traffic on trails or hills.

Sound the horn as you approach the top of the hill to
let opposing traffic know you're there.

Use your headlamps even during the day. They make
you more visible to oncoming traffic.
CAUTION:
Driving to the top (crest) of a hill at full speed can
cause an accident. There could be a drop
-off,
embankment, cliff, or even another vehicle. You
could be seriously injured or killed. As you near
the top of a hill, slow down and stay alert.

4-30
Driving at Night
Night driving is more dangerous than day driving.
One reason is that some drivers are likely to be
impaired
-- by alcohol or drugs, with night vision
problems, or by fatigue.Here are some tips on night driving.

Drive defensively.

Don't drink and drive.

Since you can't see as well, you may need to
slow down and keep more space between you and
other vehicles.

Slow down, especially on higher speed roads. Your
headlamps can light up only so much road ahead.

In remote areas, watch for animals.

If you're tired, pull off the road in a safe place
and rest.

4-31
No one can see as well at night as in the daytime. But as
we get older these differences increase. A 50
-year-old
driver may require at least twice as much light to see the
same thing at night as a 20
-year-old.
What you do in the daytime can also affect your night
vision. For example, if you spend the day in bright
sunshine you are wise to wear sunglasses. Your eyes
will have less trouble adjusting to night. But if you're
driving, don't wear sunglasses at night. They may cut
down on glare from headlamps, but they also make a lot
of things invisible.
You can be temporarily blinded by approaching
headlamps. It can take a second or two, or even several
seconds, for your eyes to readjust to the dark. When
you are faced with severe glare (as from a driver who
doesn't lower the high beams, or a vehicle with
misaimed headlamps), slow down a little. Avoid staring
directly into the approaching headlamps.Keep your windshield and all the glass on your vehicle
clean
-- inside and out. Glare at night is made much
worse by dirt on the glass. Even the inside of the glass
can build up a film caused by dust. Dirty glass makes
lights dazzle and flash more than clean glass would,
making the pupils of your eyes contract repeatedly.
Remember that your headlamps light up far less of a
roadway when you are in a turn or curve. Keep your
eyes moving; that way, it's easier to pick out dimly
lighted objects. Just as your headlamps should be
checked regularly for proper aim, so should your eyes
be examined regularly. Some drivers suffer from night
blindness
-- the inability to see in dim light -- and
aren't even aware of it.

4-43

Put on extra clothing or wrap a blanket around you.
If you have no blankets or extra clothing, make body
insulators from newspapers, burlap bags, rags, floor
mats
-- anything you can wrap around yourself or
tuck under your clothing to keep warm.
You can run the engine to keep warm, but be careful.
CAUTION:
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide) gas
to get inside. CO could overcome you and kill
you. You can't see it or smell it, so you might not
know it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
that is blocking your exhaust pipe. And check
around again from time to time to be sure snow
doesn't collect there.
Open a window just a little on the side of the
vehicle that's away from the wind. This will help
keep CO out.
Run your engine only as long as you must. This saves
fuel. When you run the engine, make it go a little faster
than just idle. That is, push the accelerator slightly. This
uses less fuel for the heat that you get and it keeps the
battery charged. You will need a well
-charged battery to
restart the vehicle, and possibly for signaling later on
with your headlamps. Let the heater run for a while.

6-34 Halogen Bulbs
CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
1. Open the hood.
2. Lift the inner quick release clips.
3. Pull the headlamp assembly away from the vehicle.
4. Remove the cover from the headlamp bulb.
5. Disconnect the wiring harness.
6. Remove the headlamp bulb by turning the socket
counterclockwise.
7. To install the replacement bulb, reverse
Steps 1 through 6.
Front Turn Signals and Sidemarker Lamps
Follow the same procedure listed for headlamp removal
earlier in this section. Replace the turn signal or
sidemarker bulb instead.
Taillamps and Rear Turn Signals
1. Open the liftgate.
2. Remove the two screws
from the lamp assembly.
3. Pull the assembly away from the vehicle.