2003 CHEVROLET EXPRESS CARGO VAN ignition

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 don't 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 wouldn't be covered
by your warranty.
Trying to start your vehicle by pushing or pulling it
won't 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 system isn't a 12-volt system
with a negative ground, both vehicles can be
damaged.
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 on, it could be badly
damaged. The repairs wouldn't be covered by
your warranty.
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!
5-41

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

Fuse Usage
42 Right Headlamp Ð Low Beam
43 Left Headlamp Ð Low Beam
44 Left Headlamp Ð High Beam
45 Right Headlamp Ð High Beam
46Truck Body Control
Module-Accessory
47 Front Windshield Wiper
48 Anti-Lock Brakes
49 Ignition A
50 Trailer
51 Climate Control Blower
52 Ignition B
63 Spare
64 SpareFuse Usage
Relay Usage
53 Windshield Wiper
54 Air Conditioning
55 Spare
56 Headlamp Ð High Beam
57 Fuel Pump
58 Headlamp Ð Low Beam
59 Horn
61 Starter
62 Spare
Circuit Breaker Usage
60 Power Seat
5-96

H
Hazard Warning Flashers................................... 3-5
Headlamp High/Low Beam Changer.................... 3-8
Headlamp Wiring............................................5-91
Headlamps....................................................5-50
Bulb Replacement.......................................5-50
Front Turn Signal, Sidemarker and Parking
Lamps....................................................5-52
Halogen Bulbs............................................5-50
Highway Hypnosis...........................................4-21
Hill and Mountain Roads..................................4-22
Hitches..........................................................4-39
Hood.............................................................. 5-9
Checking Things Under.................................. 5-9
Release.....................................................5-10
Horn............................................................... 3-6
How to Add Coolant to the Coolant
Recovery Tank............................................5-28
How to Add Coolant to the Radiator..................5-31
How to Add Fluid............................................5-21
How to Check Lubricant...................................5-47
How to Check Power Steering Fluid..................5-35
How to Check........................................5-19, 5-57
How to Inspect the Engine Air Cleaner/Filter.......5-18How to Reset the CHANGE ENGINE
OIL Light....................................................5-16
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-15
Hydroplaning..................................................4-16
I
If No Steam Is Coming From Your Engine..........5-25
If Steam Is Coming From Your Engine...............5-24
If the Light Is Flashing.....................................3-34
If the Light Is On Steady.................................3-35
If You Are Stuck in Sand, Mud, Ice or Snow.......4-28
If You Do Decide To Pull A Trailer.....................4-32
If You're Caught in a Blizzard...........................4-26
Ignition Positions.............................................2-20
Ignition Transmission Lock Check......................6-14
Infants and Young Children, Restraints...............1-36
In¯ation -- Tire Pressure..................................5-56
Inside Day/Night Rearview Mirror......................2-31
Inspection......................................................6-17
Brake System.............................................6-17
Engine Cooling System................................6-16
Exhaust System..........................................6-16
Fuel System...............................................6-16
Part C - Periodic Maintenance.......................6-16
7