wiring CHEVROLET EXPRESS 1998 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine A CA JTAN:
It can be dangerous to drive with the rear doors
open because carbon monoxide
(CO) gas can
come into your vehicle. You can’t see or smell
CO. It can cause unconsciousness and even death.
If you must drive with the rear doors open or if
electrical wiring or other cable connections must
pass through the seal between the body and the
rear doors:
Make sure all windows are shut.
I’urn the fan on your heating or cooling
system to its highest speed with the setting
on VENT, HEAT, BLEND or
DEF.
Additionally, on vehicles with heatindair
conditioning
systems, NORM A/C or
BI-LEVEL A/C can be used. That will
force outside air into your vehicle. See
“Comfort Controls” in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
See “Engine Exhaust” in the Index.
Theft
Vehicle theft is big business, especially in some cities.
Although your vehicle
has a number of theft-deterrent
features, we know
that nothing we put on it can make it
impossible to steal. However, there are ways
you can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it’s an
easy target for joy riders or professional thieves
-- so
don’t do it.
When you park your vehicle
and open the driver’s door,
you’ll hear a tone reminding you
to remove your key from
the ignition and take it with
you. Always do this. Your
steering wheel will be locked, and
so will your ignition
and transmission. And remember
to lock the doors.
Parking at Night
Park in a lighted spot, close all windows and lock your
vehicle. Remember
to keep your valuables out of sight.
Put them in a storage area, or take them with you.

Downloaded from www.Manualslib.com manuals search engine A CAUTAN:
It can be dangerous to drive with the rear
swing-out windows or rear door(s) open because
carbon monoxide (CO) gas can come into your vehicle. You can’t see or smell CO. It can cause
unconsciousness and even death.
If you must drive with the rear swing-out
windows or rear door(s) open or if electrical
wiring or other cable connections must pass
through the seal between the body and the rear
swing-out windows or rear door(s):
Make sure all windows are shut.
CAUTION: (Continued)
I CAUTION: (Continued)
Thrn the fan on your heating or cooling
system to its highest speed with the setting
Additionally, on vehicles with heatingair
conditioning systems,
NORM A/C or
BI-LEVEL A/C can be used. That will
force outside air into your vehicle. See
“Comfort Controls” in the Index.
If you have air outlets on or under the
’. instrument panel, open them all the way.
See “Engine Exhaust” in the Index.
on
VENT, HEAT, BLEND or
DEE
Horn
Press the horn symbol in the middle of the steering
wheel to sound the horn.

Downloaded from www.Manualslib.com manuals search engine Rotate the knob to the left to OFF to turn off your lamps
and lights.
Rotate the thumbwheel next to the switch knob up to
adjust instrument panel lights. Rotate the thumbwheel
up to the first notch
to return the radio display and
gearshift indicator Vacuum Fluorescence
(VF) display
to full intensity when the headlamps or parking lamps
are on.
Rotate the thumbwheel up to the second notch
to
activate the interior dome lamps.
You can switch your headlamps from high to low beam
by pulling
on the turn signalhigh beam lever.
A circuit breaker protects your headlamps. If you have
an electrical overload, your headlamps will flicker on
and off. Have your headlamp wiring checked right away
if this happens.
Headlamps On Reminder
A tone will sound when your headlamps are turned on
and your ignition is in
OFF, LOCK or ACCESSORY. If
you need to use your headlamps when the ignition
switch is in
OFF, LOCK or ACCESSORY, the tone can
be turned off by turning the thumbwheel next to the
parking lampheadlamp switch all the way down.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DIU can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
2-41

Downloaded from www.Manualslib.com manuals search engine Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks the
air bag’s electrical system for malfunctions. The light
tells you if there is an electrical problem. The system
check includes the air bag sensor, the air bag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the air bag system, see “Air
Bag” in the Index.
AIR
BAG
This light will come on
when you start your engine,
and it will flash for a few
seconds. Then the light
should
go out. This means
the system is ready.
If
the air bag readiness light stays on after you start the
engine or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away. The
air bag readiness light should flash for
a few
seconds
when you turn the ignition key to RUN. If the
light doesn’t come on then, have it fixed
so it will be
ready to warn you if there is a problem.
Charging System Light
This light should come on
briefly
when you turn on the
ignition, before starting the
engine,
as a check to show
you it is working.
After the engine starts, the light should
go out. If it stays
on or comes on while you are driving, you may have a
problem with your charging system. It could indicate a
problem with the alternator drive belt, or some other
charging system problem. Have it checked right away.
Driving while this light is on could drain your battery.
If you must drive a short distance with this light
on, it
helps to turn off all your accessories, such as the radio
and air conditioner.
2-54

Downloaded from www.Manualslib.com manuals search engine 1 Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inflated to the upper
limit for cold tires. You’ll find these numbers on the
Certification label at the rear edge of the driver’s door or
see “Tire Loading” in the Index. Then be sure you don’t
go over the
GVW limit for your vehicle, including the
weight of the trailer tongue.
witches
It’s important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are a
few reasons why you’ll need the right hitch. Here are
some rules to follow:
1 The bumpers on your vehicle are not intended for
hitches.
Do not attach rental hitches or other
bumper-type hitches to them. Use only a
frame-mounted hitch that does not attach to the
bumper.
Do not use a ball hitch, because it could pull
the bumper loose.
0 If you’ll be pulling a trailer that, when loaded, will
weigh
more than 4,000 lbs. (1 800 kg), be sure to use
a properly mounted, weight-distributing hitch and
sway control of the proper size.
This equipment is
very important for proper vehicle loading and good
handling when you’re driving.
0 Will you have to make any holes in the body of your
vehicle when
you install a trailer hitch?
If you’re using the wiring provided by the
factory-installed hitch, you should not need to make
any holes in the body of your vehicle. However, if
you have an aftermarket hitch installed, you may
need to make holes in the body.
If
you do, then be sure to seal the holes later when
you remove the hitch. If you don’t seal them, deadly
carbon monoxide (CO) from your exhaust can get
into your vehicle (see “Carbon Monoxide” in the
Index). Dirt and water can, too.

Downloaded from www.Manualslib.com manuals search engine Making Turns
NOTICE:
Making very sharp turns while trailering could
cause the trailer to come in contact with the vehicle. Your vehicle could be damaged. Avoid
making very sharp turns while trailering.
When you’re turning with a trailer, make wider turns than normal.
Do this so your trailer won’t strike soft shoulders,
curbs, road signs, trees or other objects. Avoid jerky or
sudden maneuvers. Signal well in advance.
lhrn Signals When Towing a Trailer
When you tow a trailer, your vehicle has to have extra
wiring and a heavy-duty turn signal flasher (included in
the optional trailering package).
The arrows on your instrument panel will flash
whenever you signal a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling other
drivers you’re about to turn, change lanes or stop. When
towing
a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs
on the trailer
are burned out. Thus,
you may think drivers behind
you are seeing your signal when they are not. It’s
important to check occasionally
to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don’t shift
down, you might have
to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your
speed
to around 45 mph (70 kdh) to reduce the
possibility of engine and transmission overheating.
When towing at high altitude
on steep uphill grades,
consider the following: Engine coolant will boil at a lower
temperature than
at normal altitudes. If you turn your
engine
off immediately after towing at high altitude on
steep uphill grades, your vehicle may show signs similar
to
engine overheating. To avoid this, let the engine run while
parked (preferably
on level ground) with the automatic
transmission in PARK
(P) for a few minutes before tumine
the engine off. If you do get the overheat warning, see
“Engine Overheating”
in the Index.
4-35

Downloaded from www.Manualslib.com manuals search engine Trailer Wiring Harness
The light-duty trailer wiring harness is a six-wire
harness assembly. The optional heavy-duty trailer
wiring package is an eight-wire harness assembly. The
harness is stored under the vehicle, along the driver’s
side rear corner of the frame rail. The heavy-duty trailer
wiring harness has a 30-amp feed wire. Both harnesses
come without connectors and should be wired by a
qualified electrical technician. The technician can use
the following color code chart when connecting the
wiring harness to your trailer.
Dark Blue: Use for electric trailer brakes (eight-wire
harness only)
Orange: Trailer accessory (eight-wire harness only)
0 Light Green: Back-up lamps
0 Brown: Parking lamps
Yellow: Left stoplamp and turn signal
0 Dark Green: Right stoplamp and turn signal
0 White (heavy gage): Ground wire
White (light gage): Center high-mounted stoplamp
Securely attach the harness to the trailer, then tape or
strap
it to your vehicle’s frame rail. Be sure you leave it
loose enough
so the wiring doesn’t bend or break, but
not
so loose that it drags on the ground. Store the
harness in its original place. Wrap the harness together
and tie it neatly
so it won’t be damaged.

Downloaded from www.Manualslib.com manuals search engine Electrical System
Add-on Electrical Equipment
NOTICE:
Don’t add anything electrical to your vehicle
unless you check with your dealer 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.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the lamp switch. An electrical overload will cause the
lamps to flicker on and off, or in some cases to remain
off.
If this happens, have your headlamp wiring checked
right away.
Windshield Wiper Fuses
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.
Although the circuit
is protected from electrical
overload, overload due to heavy snow, etc., may cause
wiper linkage damage. Always clear ice and heavy snow
from the the windshield before using the windshield
wipers.
If the overload is caused by some electrical
problem and not snow, etc., be sure to get it fixed.

Downloaded from www.Manualslib.com manuals search engine Halogen Bulbs ................................ 6-32
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-5
Headlamps
.................................... 2-40
Bulb Replacement
............................ 6-33
High/Low Beam Changer
...................... 2-35
OnReminder
................................ 2-41
Wiring
..................................... 6-61
Hearing Impaired. Customer Assistance
.............. 8-4
Heater Controls
................................. 3-2
HeaterIAir Conditioning Controls
................... 3-3
Heating
........................................ 3-6
High-Beam Headlamps
.......................... 2-35
Highway Hypnosis
.............................. 4-2 I
Hill and Mountain Roads ......................... 4-21
Hitches. Trailer
................................. 4-32
Hood Checking Things Under
......................... (5-8
Prop ........................................ 6-9
Release
...................................... 6-8
Horn ......................................... 2-33
Hydroplaning
.................................. 4-17
Ignition Switch
................................ 2-17
Ignition Transmission Lock Check
................. 7-41
Inflation, Tire
.................................. 6-42
Inside Day/Night Rearview Mirror
................. 2-45
Inspections
.................................... 7- 42
Brakesystem
................................ 7-43
Engine Cooling System
........................ 7-42
Exhaust Systems
............................. 7-42 RearAxle
................................... 7-43
Steering
.................................... 7-42
Suspension
.................................. 7-42
Throttle System
.............................. 7-43
Instrument Cluster
.............................. 2-51
Instrument Panel
............................... 2-50
Brightness Control
............................ 2-40
FuseBlock
.................................. 6-62
Interior Lamps
................................. 2-43
Cleaning
.................................... 6-53
.................................... J ack.
Tire 5-23
Jump Starting
................................... 5-3
Keyless Entry System
........................... 2-6
Keys
.......................................... 2-2
Labels Certification
................................. 4-27
Certificationmire
............................. 4-27
Service
Parts Identification ..................... 6-60
Tire-Loading Information
...................... 4-27
Vehicle Identification Number
................... 6-60
Dome
...................................... 2-43
Exterior
.................................... 2-40
Interior
..................................... 2-43
OnReminder
................................ 2-41
Panel
....................................... 2-40
Underhood
.................................. 2-44
Lamps

Downloaded from www.Manualslib.com manuals search engine TorqueLock ................................... 2-27
Torque. Wheel Nut
......................... 5.33. 6.67
Towing a Trailer
................................ 4-28
Towing Your Vehicle
............................. 5-8
Trailer
Brakes
..................................... 4-33
Driving on Grades
............................ 4-35
Drivingwith
................................. 4-33
Hitches
..................................... 4-32
Maintenance When Towing
..................... 4-36
Parking on Hills
.............................. 4-36
Safety Chains
................................ 4-33
Tongueweight
............................... 4-31
Total Weight on Tires
.......................... 4-32
Towing
..................................... 4-28
Turnsignals
................................. 4-35
Weight
..................................... 4-30
Wiring Harness
............................... 4-37
Transmission Fluid. Automatic
.................... 6- 17
Transmitters. Keyless Entry
........................ 2-6
Transportation. Courtesy
.......................... 8-8
Trip Odometer ................................. 2-52
TTYUsers
..................................... 8-4
Turn Signal and Lane Change Signals
............... 2-35
Turn SignalNultifunction Lever
................... 2-34
Turn Signals When Towing a Trailer
................ 4-35
Underbody Maintenance
........................ 6-58
UnderhoodLamp
............................... 2-44 Vehicle
Control
...................................... 4-5
Damage Warnings
.............................. iv
Identification Number ......................... 6-60
Loading
.................................... 4-27
Storage
..................................... 6-31
Ventilation System
............................... 3-6
Visor Vanity Mirrors
............................ 2-49
Visors. Sun
.................................... 2-49
warning Devices
............................... 5-2
Warning Lights. Gages and Indicators
............... 2-53
Washer Fluid. Windshield
........................ 6-26
Weatherstrips
.................................. 6-54
Wheel Alignment
.................................. 6-48
Nut Torque ............................. 5-33. 6.67
Replacement
................................. 6-49
Wrench
..................................... 5-24
Windows
..................................... 2-31
Power
...................................... 2-31
SideLatches
................................. 2-32
Swing-Out
.................................. 2-32
Windshield Washer
............................. 2-37
Fluid
....................................... 6-26
Fluid Level Check
............................ 7-38
Washing Your Vehicle
........................... 6-55