brake light CHEVROLET EXPRESS CARGO VAN 2004 1.G User Guide

Trailer Wiring Harness
The optional heavy-duty trailer wiring package includes
a seven-wire harness assembly at the rear of the
vehicle and a four-wire harness assembly under the left
hand side of the instrument panel. The seven-wire
harness assembly is taped together and located in a
frame pocket at the driver side rear left corner of
the frame. The seven-wire harness includes a 30-amp
feed wire. Both harnesses come without connectors and
should be wired by a qualied electrical technician.
The technician can use the following color code chart
when connecting the wiring harness to your trailer
and trailer brake controller.Seven-Wire HarnessLight Green: Back-up lamps
Brown: Parking lamps
Yellow: Left stoplamp and turn signal
Dark Green: Right stoplamp and turn signal
Dark Blue: Use for electric trailer brakes
Orange: Trailer accessory
White (heavy gage): Ground wire
Four-Wire Harness (Trailer Brake Controller)
Black: Ground
Red/White Stripe: Fused Battery
Dark Blue: Trailer Brake Feed
Light Blue: Fused Stop/CHMSL
4-51

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make a
high-pitched warning sound when the brake pads are
worn and new pads are needed. The sound may come
and go or be heard all the time your vehicle is moving,
except when you are pushing on the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon your brakes will not work well. That
could lead to an accident. When you hear the
brake wear warning sound, have your vehicle
serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.
Some driving conditions or climates may cause a brake
squeal when the brakes are rst applied or lightly applied.
This does not mean something is wrong with your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to GM torque specications.Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in
pedal travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc brakes
adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together if
the vehicle is to have really good braking. Your
vehicle was designed and tested with top-quality GM
brake parts. When you replace parts of your braking
system — for example, when your brake linings
wear down and you need new ones put in — be sure
you get new approved GM replacement parts. If you do
not, your brakes may no longer work properly. For
example, if someone puts in brake linings that are wrong
for your vehicle, the balance between your front and
rear brakes can change — for the worse. The braking
performance you have come to expect can change
in many other ways if someone puts in the wrong
replacement brake parts.
5-41

Jump Starting
If your battery has run down, you may want to use
another vehicle and some jumper cables to start your
vehicle. Be sure to follow the steps below to do it safely.
{CAUTION:
Batteries can hurt you. They can be dangerous
because:
They contain acid that can burn you.
They contain gas that can explode
or ignite.
They contain enough electricity to
burn you.
If you do not follow these steps exactly, some
or all of these things can hurt you.
Notice:Ignoring these steps could result in costly
damage to your vehicle that would not be covered
by your warranty.
Trying to start your vehicle by pushing or pulling it
will not work, and it could damage your vehicle.1. Check the other vehicle. It must have a 12-volt
battery with a negative ground system.
Notice:If the other vehicle’s system is not a 12-volt
system with a negative ground, both vehicles can
be damaged. Only use vehicles with 12-volt systems
with negative grounds to jump start your vehicle.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren’t touching
each other. If they are, it could cause a ground
connection you don’t want. You wouldn’t be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake rmly on both vehicles involved in
the jump start procedure. Put an automatic
transmission in PARK (P) or a manual transmission
in NEUTRAL before setting the parking brake.
Notice:If you leave your radio or other accessories
on during the jump starting procedure, they could
be damaged. The repairs would not be covered
by your warranty. Always turn off your radio and
other accessories when jump starting your vehicle.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or in the accessory power outlet. Turn off
the radio and all lamps that aren’t needed. This will
avoid sparks and help save both batteries. And it
could save your radio!
5-43

Fuse Usage
6 Ignition 0
7 Stop Lamp
8 Right Rear Defogger/Heated Mirror
9Right Daytime Running Lamp/Turn
Signal
10Left Daytime Running Lamp/Turn
Signal
11 Truck Body Control Module 4
12 Fuel Pump
13 Trailer
14 Flasher
15 Horn
16 Truck Body Control Module 3
17 Trailer Stop/Turn Signal
18 Truck Body Control Module 2
19 Truck Body Control Module
20 Remote Function Actuator
21 Engine 2Fuse Usage
22 Ignition E
23 Engine 1
24 Truck Body Control Module Ignition 1
25 Spare
26 RPA/Inside Rearview Mirror
27 Crankcase
28Brake Transmission Shift Interlock
System
29 Auxiliary Power Outlets
30 Cigarette Lighter
31 Instrument Panel Cluster
32 Air Conditioning
33 Spare
34 Vent
35 Spare
36 Vehicle Back Up
37Supplemental Inatable Restraint
System
5-104

A
Accessory Power Outlets.................................3-18
Adding Equipment to Your Air Bag-Equipped
Vehicle.......................................................1-81
Adding Washer Fluid.......................................5-38
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-101
Add-On Equipment..........................................4-38
Adjusting the Speakers
(Balance/Fade)....................3-45, 3-47, 3-53, 3-63
Air Bag
Off Light.....................................................3-28
Readiness Light..........................................3-27
Air Bag System..............................................1-70
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-81
Air Bag Off Switch.......................................1-77
How Does an Air Bag Restrain?....................1-75
Servicing Your Air Bag-Equipped Vehicle.........1-80
What Makes an Air Bag Inate?....................1-75
What Will You See After an Air Bag Inates?......1-76
When Should an Air Bag Inate?...................1-74
Where Are the Air Bags?..............................1-72
Air Bag Systems.............................................1-75
Air Cleaner/Filter, Engine.................................5-18
Airbag Sensing and Diagnostic Module (SDM)....7-10
All-Wheel Drive...............................................5-48
All-Wheel Drive (AWD) System.........................2-26AM ...............................................................3-73
AM-FM Radio.................................................3-43
Antenna, Fixed Mast.......................................3-75
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-32
Appearance Care............................................5-92
Care of Safety Belts....................................5-95
Chemical Paint Spotting...............................5-98
Cleaning the Inside of Your Vehicle................5-92
Cleaning the Outside of Your Vehicle..............5-95
Finish Damage............................................5-98
Sheet Metal Damage...................................5-98
Underbody Maintenance...............................5-98
Vehicle Care/Appearance Materials................5-99
Weatherstrips..............................................5-95
Ashtrays........................................................3-18
Audio System(s).............................................3-42
AM-FM Radio.............................................3-43
Care of Your Cassette Tape Player................3-73
Care of Your CD Player...............................3-75
Care of Your CDs........................................3-74
Chime Level Adjustment...............................3-75
Fixed Mast Antenna.....................................3-75
Radio with Cassette and CD.........................3-50
Radio with CD............................................3-46
Radio with Six-Disc CD................................3-61
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-43
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-43
1

Audio System(s) (cont.)
Theft-Deterrent Feature................................3-72
Understanding Radio Reception.....................3-73
Automatic Transmission
Fluid..........................................................5-19
Operation...................................................2-24
B
Backing Up....................................................4-48
Battery..........................................................5-42
Battery Replacement......................................... 2-6
Battery Run-Down Protection............................3-17
Before Leaving on a Long Trip.........................4-23
Brake
Parking......................................................2-26
System Warning Light..................................3-31
Brake Adjustment............................................5-41
Brake Fluid....................................................5-39
Brake Pedal Travel.........................................5-41
Brake Wear...................................................5-41
Brakes..........................................................5-39
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-20
Bulb Replacement...........................................5-52
Front Turn Signal, Sidemarker and Parking
Lamps....................................................5-54
Halogen Bulbs............................................5-52Bulb Replacement (cont.)
Headlamps.................................................5-52
Replacement Bulbs......................................5-56
Taillamps....................................................5-54
Buying New Tires...........................................5-70
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-8
Capacities and Specications..........................5-106
Carbon Monoxide...........................2-30, 4-27, 4-38
Care of
Safety Belts................................................5-95
Your Cassette Tape Player............................3-73
Your CD Player...........................................3-75
Your CDs ...................................................3-74
Cargo Door Relocking....................................... 2-8
Cargo Van.....................................................1-51
Cargo Vans and Cab and Chassis Models with
an Air Bag Off Switch..................................1-49
Cargo Vans and Cab and Chassis Models
without an Air Bag Off Switch........................1-48
Cargo Vans with a Passenger Air Bag and an
Air Bag Off Switch, Passenger Vans and Cab
and Chassis Models....................................1-37
2

Cargo Vans with a Passenger Air Bag and
without an Air Bag Off Switch........................1-40
Cassette Tape Messages.................................3-58
CD Adapter Kits.............................................3-58
CD Messages................................3-50, 3-61, 3-72
Center High-Mounted Stoplamp.........................3-16
Center Passenger Position, Safety Belts.....1-24, 1-25
Chains, Tire...................................................5-74
Charging System Light....................................3-30
Check
Engine Light...............................................3-34
Gages Warning Light...................................3-41
Check Engine Light.........................................3-34
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-24
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-98
Child Restraints
Child Restraint Systems...............................1-43
Infants and Young Children...........................1-36
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-53
Older Children.............................................1-34
Securing a Child Restraint Designed
for the LATCH System......................1-55, 1-56
Securing a Child Restraint in a Center
Seat Position...................................1-61, 1-62
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-58Child Restraints (cont.)
Securing a Child Restraint in the Right
Front Seat Position...................................1-65
Top Strap...................................................1-50
Top Strap Anchor Location............................1-51
Where to Put the Restraint...........................1-46
Chime Level Adjustment..................................3-75
Cigarette Lighter.............................................3-18
Cleaning
Inside of Your Vehicle..................................5-92
Outside of Your Vehicle................................5-95
Underbody Maintenance...............................5-98
Weatherstrips..............................................5-95
Cleaning Aluminum Wheels..............................5-97
Cleaning Exterior Lamps/Lenses.......................5-96
Cleaning Fabric/Carpet....................................5-92
Cleaning Glass Surfaces..................................5-94
Cleaning Interior Plastic Components.................5-94
Cleaning Leather............................................5-94
Cleaning the Top of the Instrument Panel...........5-94
Cleaning the Windshield and Wiper Blades.........5-97
Cleaning Tires................................................5-97
Cleaning Vinyl................................................5-94
Climate Control System...................................3-19
Outlet Adjustment........................................3-21
Rear Air Conditioning and Heating System......3-22
Rear Heating System...................................3-22
Control of a Vehicle.......................................... 4-5
3

I
If No Steam Is Coming From Your Engine..........5-27
If Steam Is Coming From Your Engine...............5-26
If the Light Is Flashing.....................................3-35
If the Light Is On Steady.................................3-36
If You Are Caught in a Blizzard.........................4-29
If You Are Stuck in Sand, Mud, Ice or Snow.......4-31
If You Do Decide To Pull A Trailer.....................4-39
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-36
Ination - Tire Pressure...................................5-66
Inside Day/Night Rearview Mirror......................2-32
Instrument Panel
Cluster.......................................................3-25
Overview..................................................... 3-4
Instrument Panel Brightness Control..................3-16
Interior Lamps................................................3-16
J
Jump Starting.................................................5-43
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-14
Interior.......................................................3-16
Lamps On Reminder.......................................3-15
Lap Belt........................................................1-25
Lap-Shoulder Belt...........................................1-15
LATCH System
Child Restraints...........................................1-53
Securing a Child Restraint Designed
for the LATCH System......................1-55, 1-56
Leaving Your Vehicle.......................................2-10
Leaving Your Vehicle With the Engine Running......2-28
Light
Air Bag Off .................................................3-28
Air Bag Readiness.......................................3-27
Anti-Lock Brake System Warning...................3-32
Brake System Warning.................................3-31
Change Engine Oil......................................3-38
Charging System.........................................3-30
Check Gages Warning.................................3-41
Cruise Control.............................................3-39
Daytime Running Lamps Indicator..................3-40
Malfunction Indicator....................................3-34
Reduced Engine Power................................3-40
Safety Belt Reminder...................................3-27
Security.....................................................3-39
Stabilitrak
®Indicator.....................................3-33
Stabilitrak®Not Ready..................................3-33
7

O
Off-Road Recovery..........................................4-13
Oil
Change Engine Oil Light...............................3-38
Engine.......................................................5-13
Pressure Gage............................................3-37
Older Children, Restraints................................1-34
Online Owner Center........................................ 7-4
OnStar
®Personal Calling.................................2-36
OnStar®Services............................................2-36
OnStar®System.............................................2-35
OnStar®Virtual Advisor....................................2-36
Operation Tips................................................3-21
Other Warning Devices...................................... 3-7
Outlet Adjustment............................................3-21
Outside
Camper-Type Mirrors....................................2-32
Convex Mirror.............................................2-34
Heated Mirrors............................................2-35
Manual Mirror.............................................2-32
Power Mirrors.............................................2-33
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Park (P)
Shifting Into................................................2-27
Shifting Out of............................................2-29
Parking
Brake........................................................2-26
Over Things That Burn.................................2-30
Parking on Hills..............................................4-50
Passenger Van...............................................1-52
Passenger Vans with an Air Bag Off Switch........1-47
Passenger Vans without an Air Bag Off Switch.......1-46
Passing.................................................4-14, 4-48
Passlock
®......................................................2-19
Payload.........................................................4-38
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape..................................3-56
Playing a CD.................................3-48, 3-59, 3-67
Playing a Specic Loaded CD..........................3-68
Playing the Radio...................3-43, 3-46, 3-50, 3-61
Power
Accessory Outlets........................................3-18
Door Locks.................................................. 2-8
Reduced Engine Light..................................3-40
Seat............................................................ 1-4
Steering Fluid.............................................5-36
Windows....................................................2-17
Power Steering...............................................4-11
9

Q
Questions and Answers About Safety Belts.........1-14
R
Radiator Pressure Cap....................................5-25
Radio Data System (RDS).......................3-53, 3-64
Radio Messages.............................3-45, 3-48, 3-56
Radios..........................................................3-42
AM-FM Radio.............................................3-43
Care of Your Cassette Tape Player................3-73
Care of Your CD Player...............................3-75
Care of Your CDs........................................3-74
Radio with Cassette and CD.........................3-50
Radio with CD............................................3-46
Radio with Six-Disc CD................................3-61
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-43
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-43
Theft-Deterrent............................................3-72
Understanding Reception..............................3-73
RDS Messages......................................3-55, 3-66
Reading Lamps..............................................3-17
Rear Air Conditioning and Heating System.........3-22
Rear Axle......................................................5-49
Locking........................................................ 4-8
Rear Door Security Locks.................................. 2-8
Rear Doors....................................................2-14Rear Heating System......................................3-22
Rear Safety Belt Comfort Guides......................1-31
Rear Seat Operation......................................... 1-6
Rear Seat Outside Passenger Positions.............1-27
Rear Seat Passengers, Safety Belts..................1-27
Rear Window Defogger....................................3-21
Rearview Mirrors.............................................2-32
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-32
Reduced Engine Power Light............................3-40
Remote Keyless Entry System............................ 2-3
Remote Keyless Entry System, Operation............ 2-4
Removing the Flat Tire and Installing
the Spare Tire.............................................5-84
Removing the Rear Seat................................... 1-6
Removing the Spare Tire and Tools...................5-77
Removing the Wheel Covers............................5-83
Replacement Bulbs.........................................5-56
Replacing Brake System Parts..........................5-41
Replacing the Rear Seats.................................. 1-8
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-11
Restraint System Check
Checking Your Restraint Systems...................1-81
Replacing Restraint System Parts
After a Crash..........................................1-82
10