Page 181 of 380

Night Vision
No one can see as well at night as in the daytime. But as
we get older these differences increase. A SO-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 fhr 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.
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Page 193 of 380

I
A CP ""IC\:
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 we.11-charged battery to
restart the vehicle. and possibly
for signaling later on
with your headlamps. Let the heater run for a while.
Then, shut the engine off and
close the window almost
all the way to preserve the heat. Start the engine again
and repeat this only when you feel really uncornfortable
from the
cold. BLI~ do it as little as possible. Preserve the
fuel
as long as you can. To help keep warm, you can get
out
of the vehicle and do some fairly vigorous exercises
every half hour or
so until help comes.
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Page 275 of 380

Vehicle Storage Halogen Bulbs
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 “Jump Starting” in the Index 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.
Composite Headlamps
for tips on working around a battery without
getting hurt. 1. Open the hood.
2. Remove the black retainer clips by lifting up.
I I
3. Pull the headlamp assembly out.
Contact your retailer to learn how to prepare your
vehicle for longer storage periods.
Also, for your audio system, see ”Theft-Deterrent
Feature”
in the Index.
Bulb Replacement
Before you replace any bulbs, be sure that all the lamps
are off and the engine isn’t running. See ”Replacement
Bulbs”
in the index for the proper type of bulb to use.
4. Unplug the electrical connector.
5. Turn the bulb assembly to the left to remove it.
6. Put the new bulb assembly into the headlamp
assembly and turn
it to the right until it is tight.
1. P~LI~ in the electrical connector.
8. Put the headlamp lens assembly back into the
vehicle. Install the two retaining clips.
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Page 276 of 380

Front Turn Signal Lamps
1. Remove the headlamp assembly as shown earlier in
this section.
2. Twist the bulb socket to remove it from the
headlamp assembly.
3. Pull the bulb straight out to remove it from
the socket.
4. Push the new bulb into the socket until it snaps
into place.
5. Put the bulb socket into the lamp assembly and twist
it to the right until it is tight.
Taillamps
1. Open the endgate.
2. Remove the two screws
from the lamp assembly.
1 6. Put the headlamp assembly back into the vehicle.
Instill
the two retaining clips.
3. Pull the assembly away from the vehicle.
4. Turn the socket to the left to remove it. Push the ta
in while you turn the socket to the left.
out of the socket.
5. Holding the base of the bulb, pull the bulb straight
6. Push the new bulb straight into the socket until it clicks.
7. Put the socket into the lamp assembly and turn the
8. Install the lamp assembly and screws.
9. Close the endgate. socket to
the right
~lntil it locks into place.
6-34
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Page 286 of 380

NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance and tire
clearance to the body and chassis.
See “Changing a Flat Tire” in the Index for
more information.
Used Replacement Wheels
/1 MI CP ““‘3N:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used or
hotv
far it’s been driven. It could fail suddenly
and cause an accident.
If you have to replace a
wheel, use a new GM original equipment wheel.
Tire Chains
NOTICE:
______
Don’t use tire chains. They can damage your
vehicle because there’s not enough clearance.
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device
if it’s contacting your vehicle, and don’t
spin your wheels.
Appearance Care
Remember, cleaning products can be hazardous. Some
are toxic. Others can burst into flame
if you strike a
match or get them on a hot part of the vehicle. Some are
dangerous if you breathe their fumes in a closed space.
When you use anything from a container to clean your
vehicle, be sure to follow the manufacturer’s warnings
and instructions. And always open your doors or
windows when you’re cleaning the inside.
ProCarManuals.com
Page 296 of 380

Electrical System
Add-on Electrical Equipment
I NOTICE:
~ ~~~~~~
Don’t add anything electrical to your vehicle
unless you check with your retailer first. Some
electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your
warranty. Some add-on electrical equipment can
keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle. see “Servicing
Your Air Bag-Equipped Vehicle”
in the Index.
Headlamps
The headlamp wiring is protected by an internal circuit
breaker.
An electrical overload will cause the lamps to
go on and off. or in some cases to remain off. If this
happens, have your headlamp wiring checked
right away.
Windshield Wipers
The windshield wiper motor is protected by a circuit
breaker
and a fuse. If the motor overheats due to heavy
snow, etc.,
the wiper will stop until the motor cools. If
the overload is caused by some electrical problem, be
sure to get
it fixed.
Power Windows and Other Power Options
Circuit breakers protect the power windows and other
power accessories. When
the current load is too heavy,
the circuit breaker opens
and closes, protecting the
circuit
mtil the problem is fixed or goes away.
6-54
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Page 298 of 380
FuseKircuit Usage
Breaker
A Not Used
B Not Used
1 Headlamp Switch, Body Control
Module, Headlamp Relay
FuseKircuit
Breaker
2
3
4
8
9
10
11
12
Usage
Cigarette Lighter, Data Link
Connector
Cruise Control Module and
Switch, Body Control Module,
Heated Seats
Gages, Body Control Module,
Instrument Panel Cluster
Interior Lights
Not Used Power Outside Mirror, Power
Lock Relay
Courtesy Lamps, Battery Run-Down Protection
HVAC Control Head (Manual)
Turn
Signal
Cluster, Engine Control Module Parking Lamps, Power Window
Switch, Body Control Module,
Ashtray Lamp
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Page 300 of 380
FUSE
PULLER
DL 1T
STARTER
FlPUMP
PRINTED IN USA
I Name
TRL TRN
TRR TRN
TRL BTU
VEH
B/U
RT TURN
Usage
Trailer Left Turn
Trailer Right Turn
Trailer Back-up Lamps
Vehicle Back-up Lamps
Right Turn Signal Front
4
1
1
1
Name
LT TURN
LT TRN
RT TRN
RR PRK
TRL PRK
LT HDLP
RT HDLP
FR PRK INT BAT
ENG
1
ECM B
ABS ECM
1
HORN
BTSI
Usage
Left Turn Signal Front
Left Turn Signal Rear
Right Turn Signal Rear Right Rear Parking Lamps
Trailer Parking Lamps Left Headlamp
Right Headlamp
Front Parking Lamps
I/P Fuse Block Feed
Engine Sensors/Solenoids, MAP,
CAM, PURGE, VENT
Engine Control Module, Fuel
Pump, Module, Oil Pressure
Anti-Lock Brake System
Engine Control Module Injectors
Horn
Brake-Transmission Shift
Interlock
6-58
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