2003 CHEVROLET EXPRESS CARGO VAN engine

Vehicle Identi®cation
Vehicle Identi®cation Number (VIN)
This is the legal identi®er for your vehicle. It appears on
a plate in the front corner of the instrument panel, on
the driver's side. You can see it if you look through the
windshield from outside your vehicle. The VIN also
appears on the Vehicle Certi®cation and Service Parts
labels and the certi®cates of title and registration.
Engine Identi®cation
The 8th character in your VIN is the engine code. This
code will help you identify your engine, speci®cations
and replacement parts.
Service Parts Identi®cation Label
You'll ®nd this label on the front passenger door frame.
It's very helpful if you ever need to order parts. On
this label is:
·your VIN,
·the model designation,
·paint information and
·a list of all production options and special
equipment.
Be sure that this label is not removed from the vehicle.
5-90

Engine Compartment Fuse Block
The fuse block is in the engine compartment on the driver's side of the vehicle.
Front of Vehicle
5-94

Fuse Usage
1 Radio Battery
2 Powertrain Control Module Battery
3 Left Rear Turn Lamp
4 Right Rear Turn Lamp
5 Backup Lamps Trailer Wiring
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
24Truck 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 In¯atable Restraint
System
38 Powertrain Control Module Ignition 1
39 Oxygen Sensor B
40 Oxygen Sensor A
41 Windshield Wipers
5-95

Capacities and Speci®cations
All capacities are approximate. When adding, be sure to ®ll to the appropriate level or as recommended in this
manual.
See refrigerant charge label under the hood for charge capacity information and requirements.
Engine Speci®cations
Engine VIN Code Transmission Spark Plug Gap Firing OrderWheel Nut
Torque
VORTECŸ 4300 V6
MFI
1W M300.060 inches
(1.52 mm)1±6±5±4±3±2140 lb ft
190Y
VORTECŸ 4800 V8
MFI
1V MT10.060 inches
(1.52 mm)1±8±7±2±6±5±4±3140 lb ft
190Y
VORTECŸ 5300 V8
MFI
1T M300.060 Inches
(1.52 mm)1±8±7±2±6±5±4±3140 lb ft
190Y
VORTECŸ 6000 V8
MFI
1U MT10.060 inches
(1.52 mm)1±8±7±2±6±5±4±3140 lb ft
190Y
1Sequential Fuel Injection
5-97

Capacities
ApplicationCapacities
QTY Without Rear
Heater QTY With Rear Heater
Cooling System
After re®ll, the level must be rechecked. See ªCooling Systemº in the Index.
VORTECŸ 4300 V6 11.0 quarts (10.4 L) 14.0 quarts (13.2 L)
VORTECŸ 4800 V8 13.4 quarts (12.7 L) 16.4 quarts (15.5 L)
VORTECŸ 5300 V8 13.4 quarts (12.7 L) 16.4 quarts (15.5 L)
VORTECŸ 6000 V8 14.8 quarts (14.0 L) 17.8 quarts (17.0 L)
ApplicationCapacities
English Metric
Engine Oil With Filter
After re®ll, the level must be rechecked. Add enough engine oil so that the ¯uid is within the proper operating
range. See
Engine Oil on page 5-13
VORTECŸ 4300 V6 (Vin W) 4.5 quarts 4.3 L
VORTECŸ 4800 V8 ( Vin V) 6.0 quarts 5.7 L
VORTECŸ 5300 V8 (Vin T) 6.0 quarts 5.7 L
VORTECŸ 6000 V8 (Vin U) 6.0 quarts 5.7 L
5-98

Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are based on the latest information available at the time of printing,
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was
built, or if you have any questions, please contact your GM dealer.
These speci®cations are for information only. If you have any questions, see the service manual for the chassis or
refer to the body manufacturer's publications.
VIN Code W V T U
Oil Filter* PF47 PF44 PF44 PF44
Engine Air Cleaner /Filter* A1621C A1621C A1621C A1621C
Passenger Compartment Air Filter
Kit**52485513 52485513 52485513 52485513
PCV Valve* CV 769±C CV 2001±C CV 2001±C CV 2001±C
Spark Plugs 41±932 41±974 41±974 41±974
Fuel Filter* 6F6Z6 GF626 GF626 GF626
Wiper Blades** 15153642 15153642 15153642 15153642
Wiper Blade Type ITTA ITTA ITTA ITTA
Wiper Blade Length22 inches
(56.0 cm)22 inches
(56.0 cm)22 inches
(56.0 cm)22 inches
(56.0 cm)
* ACDelco
žpart number
** GM part number
5-100

A
Accessory Power Outlets.................................3-18
Adding Equipment to Your Air Bag-Equipped
Vehicle.......................................................1-74
Adding Washer Fluid.......................................5-36
Additional Program Information........................... 7-8
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-91
Add-On Equipment..........................................4-31
Adjusting the Speakers (Balance/Fade).....3-43, 3-46,
3-51, 3-62
Air Bag System..............................................1-63
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-74
Air Bag Off Switch.......................................1-70
How Does an Air Bag Restrain?....................1-68
Servicing Your Air Bag-Equipped Vehicle.........1-73
What Makes an Air Bag In¯ate?....................1-68
What Will You See After an Air
Bag In¯ates?...........................................1-68
When Should an Air Bag In¯ate?...................1-67
Where Are the Air Bags?..............................1-65
Air Bag Systems.............................................1-68
Air Bag .........................................................3-28
Off Light.....................................................3-28
Readiness Light..........................................3-27Air Cleaner/Filter, Engine.................................5-17
All-Wheel Drive (AWD) System.........................2-26
All-Wheel Drive...............................................5-46
AM-FM Radio.................................................3-41
AM ...............................................................3-73
Antenna, Fixed Mast.......................................3-75
Anti-Lock Brake, System Warning Light..............3-32
Anti-lock Brake System..................................... 4-6
Appearance Care............................................5-80
Care of Safety Belts....................................5-83
Chemical Paint Spotting...............................5-87
Cleaning the Inside of Your Vehicle................5-80
Cleaning the Outside of Your Vehicle..............5-83
Finish Damage............................................5-86
Sheet Metal Damage...................................5-86
Underbody Maintenance...............................5-87
Vehicle Care/Appearance Materials................5-88
Weatherstrips..............................................5-83
Ashtrays........................................................3-18
Audio System(s).............................................3-40
AM-FM Radio.............................................3-41
Care of Your Cassette Tape Player................3-74
Care of Your CD Player...............................3-75
Care of Your CDs........................................3-75
Chime Level Adjustment...............................3-75
Fixed Mast Antenna.....................................3-75
Radio with Cassette and CD.........................3-48
1

Care of.........................................................5-83
Safety Belts................................................5-83
Your Cassette Tape Player............................3-74
Your CD Player...........................................3-75
Your CDs ...................................................3-75
Cargo Door Relocking....................................... 2-8
Cargo Vans and Cab and Chassis Models with
an Air Bag Off Switch..................................1-48
Cargo Vans and Cab and Chassis Models
without an Air Bag Off Switch........................1-47
Cargo Vans with a Passenger Air Bag and an
Air Bag Off Switch, Passenger Vans and Cab
and Chassis Models....................................1-37
Cargo Vans with a Passenger Air Bag and
without an Air Bag Off Switch........................1-40
Cassette Tape Messages.................................3-56
Cassette Tape Player Service...........................6-12
CD Adapter Kits.............................................3-56
Center High Mounted
Stoplamp (CHMSL)......................................5-54
Center High-Mounted Stoplamp.........................3-15
Center Passenger Position, Safety Belts.....1-25, 1-26
Chains, Tires..................................................5-63
Charging System Light....................................3-29
Check Engine Light.........................................3-33
Checking Brake Fluid......................................5-38
Checking Coolant............................................5-23
Checking Engine Oil........................................5-13
Checking Things Under the Hood....................... 5-9
Checking Your Restraint Systems......................1-74Check...........................................................3-33
Engine Light...............................................3-33
Gages Warning Light...................................3-38
Chemical Paint Spotting...................................5-87
Child Restraints..............................................1-42
Child Restraint Systems...............................1-42
Infants and Young Children...........................1-36
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-51
Older Children.............................................1-34
Securing a Child Restraint Designed for the
LATCH System........................................1-53
Securing a Child Restraint in a Center
Seat Position...........................................1-56
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-53
Securing a Child Restraint in the Right Front
Seat Position...........................................1-58
Top Strap Anchor Location............................1-50
Top Strap...................................................1-48
Where to Put the Restraint...........................1-45
Chime Level Adjustment..................................3-75
Cigarette Lighter.............................................3-18
Cleaning Aluminum Wheels..............................5-85
Cleaning Exterior Lamps/Lenses.......................5-84
Cleaning Fabric/Carpet....................................5-80
Cleaning Glass Surfaces..................................5-82
Cleaning Interior Plastic Components.................5-82
Cleaning Leather............................................5-82
Cleaning the Top of the Instrument Panel...........5-82
3