fuse CHEVROLET ASTRO CARGO VAN 2003 2.G User Guide

Fuse/Circuit
BreakerUsage
10 Air Bag System
11 Not Used
12L, M1, M2 Blower Motor, Rear Air
Conditioning Relay Coil, Front Cont.
Temp. Door Motor, HI Blower Relay,
Defogger Timer Coil
13Cigarette Lighter, Door Lock
Switches, Dutch Door Release
Module
14Cluster Illum, Climate Controls,
Chime Module, Radio Illumination,
Rear Heat Switch Illumination, Rear
Wiper/Washer Switch Illumination,
Rear Liftgate Switch Illumination,
Remote Cassette Illumination,
Overhead Console, Truck Body
Control Illumination
15Truck Body Module, Headlamp
Relay
16Front Turn Signals, Rear Turn
Signals, Trailer Turn Signals,
Back-Up Lamps, Brake
Transmission Shift Interlock SolenoidFuse/Circuit
BreakerUsage
17 Front Wipers, Front Washer Pump
18VCM-Ign 3, VCM-Brake, Cruise
Stepper Motor Signal, ATC Module
19Instrument Panel Radio: ATC (Main
Feed), 2000 Series (Standby)
20PRNDL/Odometer, TCC Enable and
PWM Solenoid, Shift A and Shift B
Solenoids, 3±2 Downshift Solenoid,
Instrument Panel Cluster, VCM
Module
21 Powr Adjust Mirrors
22 Not Used
23 Rear Wiper, Rear Washer Pump
24 Not Used
A(Circuit Breaker) Power Door Lock
Relay, 6±Way Power Seats
B (Circuit Breaker) Power Windows
5-95

Underhood Fuse Block
The underhood fuse block is located toward the rear of
the engine compartment on the driver's side of the
vehicle.
Lift the hood and open the cover to gain access to this
fuse block.
A fuse puller is included in the underhood fuse block.
You will also ®nd spare fuses.Feed Usage
AUX B Up®tter Battery Feed
AUX A Up®tter Accessory Feed
5-96

Relays Usage
A/C Relay
(Rear Heat and
A/C)Rear/Heat and Air Conditioning
Up®tter-ACCY
RelayUp®tter Accessory
Starter Enable
RelayStarter
A/C Enable
RelayAir Conditioning
Headlamps
RelayHeadlamps
Fuel Pump
RelayFuel Pump
Fuse/Circuit
BreakerUsage
UPFITTER-BATTUp®tter Battery Power Stud, Trailer
Wiring Harness
UPFITTER-ACCY Up®tter Accessory Relay
Spare Not used
Spare Not used
Spare Not usedFuse/Circuit
BreakerUsage
ECM-1BFuel Pump Relay and Motor, VCM,
Oil Pressure Switch/Sender
HORN Horn Relay and Horn
A/C COMPAir Conditioning Enable Relay and
Compressor
RR HTR/AC Rear Heater and Air Conditioning
ATC Active Transfer Case-L Van
FRT HVAC Front Heater and Air Conditioning
ENG-IOxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
Evaporative Emission Canister Vent
Solenoid
IGN-E Air Conditioning Enable Relay Coil
ECM-IFuel Injectors 1±6, Crankshaft
Position Sensot, VCM, Coil Driver
Module (EST), Ignition Coil
Blank Not Used
RH HDLMP Right Headlamp
LH Headlamp Left Headlamp
Blank Not Used
Blank Not Used
5-97

Fuse/Circuit
BreakerUsage
DIODE-1 Air Conditioning
Blank Not Used
Blank Not Used
Blank Not Used
LIGHTINGCourtesy Fuse, Power Adjust Mirrors
Fuse, Truck Body Control Battery
Fuse
BATTPower Accessory Circuit Breaker,
Stop/Hazard Fuse, Auxiliary Power
Fuse, Cigarette Lighter Fuse, Radio
Battery FuseFuse/Circuit
BreakerUsage
IGN A Starter Relay, Ignition Switch
IGN B Ignition Switch
ABSElectronic Brake
Control Module
Blank Not Used
RAP Radio Accessory, Power Windows
HTD MIR/RR
DEFOGRear Window Defogger,Climate
Control Head
5-98

Customer Assistance Information........................ 7-8
Courtesy Transportation.................................. 7-8
Customer Assistance for Text Telephone
(TTY) Users.............................................. 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps (DRL).........................3-14
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-19
Directing the Air¯ow........................................3-20
Disabling the Theft-Deterrent Feature.................3-49
Doing Your Own Service Work........................... 5-3
Dome Lamps.................................................3-16
Door............................................................... 2-8
Front Doors.................................................. 2-8
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8Door (cont.)
Programmable Automatic Door Locks............... 2-9
Rear Doors.................................................2-13
Sliding Side Door........................................2-10
Driver Information System................................2-42
Driver............................................................1-18
Position, Safety Belt.....................................1-18
Driving On Grades..........................................4-39
Driving on Snow or Ice....................................4-24
Driving Through Deep Standing Water...............4-18
Driving Through Flowing Water.........................4-18
Driving with a Trailer.......................................4-37
Driving..........................................................4-14
At Night.....................................................4-14
City...........................................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-20
Hill and Mountain Roads..............................4-22
In Rain and on Wet Roads...........................4-16
Winter........................................................4-24
E
Electrical System............................................5-92
Add-On Equipment......................................5-92
Fuses and Circuit Breakers...........................5-93
Headlamp Wiring.........................................5-92
4

Electrical System (cont.)
Power Windows and Other Power Options......5-92
Windshield Wiper Fuses...............................5-92
Emissions Inspection and Maintenance
Programs...................................................3-33
Engine Coolant Level Check.............................6-26
Engine Oil Additives........................................5-18
Engine Oil Level Check...................................6-26
Engine..........................................................5-24
Air Cleaner/Filter.........................................5-24
Battery.......................................................5-46
Check and Service Engine Soon Light............3-30
Compartment Overview................................5-14
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-30
Coolant......................................................5-28
Cooling System Inspection............................6-30
Cover........................................................5-20
Exhaust.....................................................2-30
Fan Noise..................................................5-39
Oil .............................................................5-15
Overheating................................................5-31
Starting......................................................2-21
Entry Lighting.................................................3-15
Erasing HomeLink
žButtons..............................2-37
Except Cargo Vans.................................1-38, 1-47
Exit Lighting...................................................3-15Express-Down Window....................................2-17
Extender, Safety Belt.......................................1-34
Exterior Lamps...............................................3-12
F
Filter.............................................................5-24
Engine Air Cleaner......................................5-24
Finding a Station....................................3-39, 3-41
Finish Care....................................................5-87
Finish Damage...............................................5-88
Fixed Mast Antenna........................................3-50
Flash-to-Pass................................................... 3-7
Flat Tire, Changing.........................................5-71
Flat Tire........................................................5-70
Fluid.............................................................5-25
Automatic Transmission................................5-25
Power Steering...........................................5-40
Windshield Washer......................................5-41
FM ...............................................................3-50
Following Distance..........................................4-38
Front Axle......................................................5-54
Front Doors..................................................... 2-8
Fuel Regulator................................................2-21
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
5

Fuel (cont.)
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-36
Gasoline Octane........................................... 5-5
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-37
System Inspection.......................................6-30
Fuses...........................................................5-93
Fuses and Circuit Breakers...........................5-93
Windshield Wiper.........................................5-92
G
Gage............................................................3-36
Check Gages Warning Light..........................3-36
Engine Coolant Temperature.........................3-30
Fuel..........................................................3-36
Oil Pressure...............................................3-34
Speedometer..............................................3-25
Voltmeter Gage...........................................3-28
Garage Door Opener.......................................2-34
Gasoline......................................................... 5-5
Octane........................................................ 5-5
Speci®cations............................................... 5-5Gasoline (cont.)
Gate Operator and Canadian Programming........2-36
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hatch Release................................................2-15
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-5
Headlamp High/Low-Beam Changer.................... 3-7
Headlamp Wiring............................................5-92
Headlamps....................................................5-55
Bulb Replacement.......................................5-55
Front Turn Signal Lamps..............................5-59
Halogen Bulbs............................................5-55
Highway Hypnosis...........................................4-22
Hill and Mountain Roads..................................4-22
Hitches..........................................................4-36
HomeLink
žTransmitter, Programming................2-35
HomeLinkžTransmitter....................................2-34
Hood............................................................5-11
Checking Things Under................................5-11
Release.....................................................5-11
Horn............................................................... 3-5
6

How to Add Coolant to the Coolant
Recovery Tank............................................5-34
How to Add Coolant to the Radiator..................5-37
How to Add Fluid............................................5-27
How to Check Lubricant...................................5-53
How to Check Power Steering Fluid..................5-40
How to Check........................................5-25, 5-64
How to Inspect the Engine Air Cleaner/Filter.......5-24
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-18
Hydroplaning..................................................4-18
I
If No Steam Is Coming From Your Engine..........5-32
If Steam Is Coming From Your Engine...............5-31
If the Light Is Flashing.....................................3-32
If the Light Is On Steady.................................3-32
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.............................................2-19
Ignition Transmission Lock Check......................6-29
Infants and Young Children, Restraints...............1-38
In¯ation Ð Tire Pressure.................................5-64
Inspection......................................................6-31
Brake System.............................................6-31
Engine Cooling System................................6-30Inspection (cont.)
Exhaust System..........................................6-30
Fuel System...............................................6-30
Part C - Periodic Maintenance.......................6-30
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-30
Throttle System...........................................6-31
Transfer Case and Front Axle
(All-Wheel Drive)......................................6-31
Installing a Garage Door Opener.......................2-40
Instrument Panel Brightness Control..................3-15
Instrument Panel Fuse Block............................5-93
Instrument Panel.............................................3-24
Cluster.......................................................3-24
Overview..................................................... 3-2
Interior Lamps................................................3-15
J
Jump Starting.................................................5-47
K
Key Lock Cylinders Service..............................6-27
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
7

Tires.............................................................5-63
Buying New Tires........................................5-66
Chains.......................................................5-70
Changing a Flat Tire....................................5-71
Compact Spare Tire.....................................5-82
If a Tire Goes Flat.......................................5-70
In¯ation Ð Tire Pressure..............................5-64
Inspection and Rotation................................5-64
Uniform Tire Quality Grading.........................5-67
Wheel Alignment and Tire Balance.................5-69
Wheel Replacement.....................................5-69
When It Is Time for New Tires......................5-66
To Use the Engine Coolant Heater....................2-22
Top Strap Anchor Location...............................1-50
Top Strap......................................................1-48
Torque Lock...................................................2-29
Total Weight on Your Vehicle's Tires..................4-35
Tow/Haul Mode Button.....................................2-25
Tow/Haul Mode Light.......................................3-36
Towing..........................................................4-29
Recreational Vehicle.....................................4-29
Towing a Trailer..........................................4-31
Your Vehicle...............................................4-29
Trailer Brakes.................................................4-36
Trailer Wiring Harness.....................................4-41
Trailering Package..........................................4-31
Transfer Case................................................5-52Transmission Operation, Automatic....................2-23
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-11
Transmission..................................................5-25
Fluid, Automatic...........................................5-25
Transportation Options...................................... 7-9
Trip Odometer................................................3-25
Turn and Lane Change Signals.......................... 3-6
Turn Signal/Multifunction Lever........................... 3-6
Turn Signals When Towing a Trailer..................4-38
U
Underbody Flushing Service.............................6-29
Underhood Fuse Block....................................5-96
Understanding Radio Reception........................3-50
Uniform Tire Quality Grading............................5-67
United States ± Customer Assistance.................. 7-4
Unlocking the Theft-Deterrent Feature After a
Power Loss................................................3-49
Used Replacement Wheels..............................5-70
Using Cleaner on Fabric..................................5-84
Using HomeLink
ž...........................................2-37
14

Windshield Washer (cont.)
Windshield Wiper............................................5-62
Blade Replacement......................................5-62
Fuses........................................................5-92
Windshield Wipers............................................ 3-8
Winter Driving................................................4-24
Wiper Blade Check.........................................6-27
Y
Your Vehicle and the Environment....................... 6-2
16