Page 1 of 406

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-6
Safety Belts
.............................................1-10
Child Restraints
.......................................1-34
Air Bag System
.......................................1-70
Restraint System Check
............................1-81
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-16
Theft-Deterrent Systems
............................2-19
Starting and Operating Your Vehicle
...........2-20
Mirrors
....................................................2-32
OnStar
®System
......................................2-35
Storage Areas
.........................................2-36
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-19
Warning Lights, Gages, and Indicators
........3-24
Audio System(s)
.......................................3-42
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-32Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under
the Hood
.............................................5-10
All-Wheel Drive
........................................5-48
Rear Axle
...............................................5-49
Front Axle
...............................................5-50
Noise Control System
...............................5-51
Bulb Replacement
....................................5-52
Windshield Wiper Blade Replacement
.........5-56
Tires
......................................................5-58
Appearance Care
.....................................5-92
Vehicle Identi cation
...............................5-100
Electrical System
....................................5-101
Capacities and Speci cations
...................5-106
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index................................................................ 1
2004 Chevrolet Express Owner ManualM
Page 9 of 406
Front Seats
Manual Seats
The bucket seats can be adjusted forward or rearward
with the lever located at the front of the seat.
To adjust the seat, pull the lever up to release the seat
bottom. Slide the seat to where you want it and then
release the lever. Try to move the seat with your body,
to make sure the seat is locked into place.
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
1-3
Page 10 of 406
Power Seat
If your vehicle has a power seat on the driver’s or
passenger’s side, you can adjust it with these controls
located at the front center of the seat cushion.
To raise or lower the seat, move the center knob up or
down. To move the seat forward or rearward, move
the center knob toward the right or left.
To raise or lower the front of the seat cushion, move the
right lever up or down. To raise or lower the rear of
the seat cushion, move the left lever up or down.
Reclining Seatbacks
To adjust the seatback, lift the front of the lever, which
is located on the inboard side of the seat cushion.
Move the seatback with your body and release the lever
to lock the seatback where you want it. Lean forward
and pull up on the front of the lever and the seatback will
go to an upright position.
1-4
Page 14 of 406

Replacing the Rear Seats
{CAUTION:
A seat that isn’t locked into place properly can
move around in a collision or sudden stop.
People in the vehicle could be injured. Be sure
to lock the seat into place properly when
installing it.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.1. Position the seat into the open slots in both rails.
Push the seat forward in the rail, hooking both
seat bases onto the pins inside of the rails.
2. To install the locking pins at the rear of the seat
base, locate the hole in the rail for the pin. It is
found on the inboard side of the seat. If the vehicle
has oor mats, pull the ap that has been cut
into the mat.
3. Insert the locking pin into the seat base and push
the seat to line up with the pin with the base. The
pin with the black cap marked “R” must be installed
on the passenger’s side and the pin with the gray
cap marked “L” on the driver’s side.
1-8
Page 15 of 406
4. Push the pin with the black cap marked “R” down
until it is in the retaining clip.5. Push the pin with the gray cap marked “L” down
until it is in the retaining clip.
6. If the vehicle has a oor mat, put the ap back to
its original position.
7. Repeat this procedure for the other seat base.
8. Connect the quick-release latch plates for the
lap-shoulder belts by inserting the latch plates
into the buckles attached at the outboard positions
of the bench seat. Do not twist the belt.
9. Check that all locking pins are locked into place
before operating the vehicle.
1-9
Page 21 of 406

Q:If I’m a good driver, and I never drive far from
home, why should I wear safety belts?
A:You may be an excellent driver, but if you’re in an
accident – even one that isn’t your fault – you and
your passengers can be hurt. Being a good
driver doesn’t protect you from things beyond your
control, such as bad drivers.
Most accidents occur within 25 miles (40 km) of
home. And the greatest number of serious injuries
and deaths occur at speeds of less than 40 mph
(65 km/h).
Safety belts are for everyone.
How to Wear Safety Belts Properly
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, seeOlder Children on page 1-34
orInfants and Young Children on page 1-36. Follow
those rules for everyone’s protection.
First, you’ll want to know which restraint systems your
vehicle has.
We’ll start with the driver position.
Driver Position
This part describes the driver’s restraint system.
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here’s how to wear it
properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To see
how, see “Seats” in the Index.
1-15
Page 23 of 406

The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this
applies force to the strong pelvic bones. And you’d be
less likely to slide under the lap belt. If you slid under it,
the belt would apply force at your abdomen. This
could cause serious or even fatal injuries. The shoulder
belt should go over the shoulder and across the
chest. These parts of the body are best able to take belt
restraining forces.
The safety belt locks if there’s a sudden stop or crash.
Shoulder Belt Height Adjuster
Before you begin to drive, move the shoulder belt
adjuster to the height that is right for you.
To move it down, pull on
the center adjuster control
labeled PULL. You can
move the adjuster up just
by pushing up on the
shoulder belt guide.
After you move the adjuster to where you want it, try to
move it down without pushing in to make sure it has
locked into position.
Adjust the height so that the shoulder portion of the belt
is centered on your shoulder. The belt should be
away from your face and neck, but not falling off your
shoulder.
1-17
Page 30 of 406

The best way to protect the fetus is to protect the
mother. When a safety belt is worn properly, it’s more
likely that the fetus won’t be hurt in a crash. For
pregnant women, as for anyone, the key to making
safety belts effective is wearing them properly.
Right Front Passenger Position
To learn how to wear the right front passenger’s safety
belt properly, seeDriver Position on page 1-15.
The right front passenger’s safety belt works the same
way as the driver’s safety belt – except for one thing.
If you ever pull the shoulder portion of the belt out all the
way, you will engage the child restraint locking feature.
If this happens, just let the belt go back all the way
and start again.
Center Passenger Position
(2nd Row)
If your vehicle has a second row bench seat, someone
can sit in the center position. When you sit in the
center position in the second row bench seat, you have
a lap-shoulder belt which works the same way as the
rear seat outside passengers’ belts. To learn how
to wear a lap-shoulder belt see, “Lap-Shoulder Belt”
underRear Seat Passengers on page 1-27.
1-24