2005 CHEVROLET ASTRO CARGO VAN headlamp

Fuse/Circuit
BreakerUsage
1Stop/Turn/Hazard Lamps, Center
High-Mounted Stop Lamp, Anti-Lock
Brakes
2Radio Accessory, Rear Seat Audio
Controls
3Courtesy Lamps, Glove Box Lamp,
Dome Reading Lamps, Vanity Mirror
Lamps, Courtesy Lamps
Fuse/Circuit
BreakerUsage
4Daytime Running Lamps Relay,
Instrument Panel Cluster
5 Rear Defogger
6Cruise Module, Truck Body Control
Module, Instrument Panel Cluster,
Cruise Control Switch,
Electrochromic Mirror
7 Power Outlets, Subwoofer Amplier
8Crank Circuit Fuse, Park/Neutral
Switch, Starter Enabler Relay
9License Plate Lamp, Tailamps,
Parking Lamps, Ashtray Lamp,
Panel Lights, Trailer Taillamps,
Front and Rear Sidemarker Lamps,
Door Switch Illumination, Headlamp
Switch Illumination, Rear Seat Audio
Illumination, Truck Body Control
Module
10 Air Bag System
11 Not Used
12Blower 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
5-94

Fuse/Circuit
BreakerUsage
14Cluster Illumination, 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
Solenoid
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)Fuse/Circuit
BreakerUsage
20PRNDL/Odometer, Shift A and Shift
B Solenoids, 3–2 Downshift
Solenoid, Instrument Panel Cluster,
VCM Module
21 Power Adjust Mirrors
22 Not Used
23 Rear Wiper, Rear Washer Pump
24 Not Used
Circuit
BreakersUsage
APower Door Lock Relay, 6–Way
Power Seats
B Power Windows
5-95

Fuse/Circuit
BreakerUsage
UPFITTER-
BATTUptter Battery Power Stud, Trailer
Wiring Harness
UPFITTER-
ACCYUptter Accessory Relay
SPARE Spare
SPARE Spare
SPARE Spare
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
SolenoidFuse/Circuit
BreakerUsage
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
DIODE-1 Air Conditioning
BLANK Not Used
BLANK Not Used
BLANK Not Used
LIGHTINGCourtesy Fuse, Power Adjust
Mirrors Fuse, Truck Body Control
Battery Fuse
5-97

Fuse/Circuit
BreakerUsage
BATTPower Accessory Circuit Breaker,
Stop/Hazard Fuse, Auxiliary Power
Fuse, Cigarette Lighter Fuse, Radio
Battery Fuse
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 HeadRelays Usage
A/C RELAY Rear/Heat and Air Conditioning
UPFITTER-
ACCY RELAYUptter Accessory
STARTER
ENABLE
RELAYStarter
A/C ENABLE
RELAYAir Conditioning
HEAD LAMPS
RELAYHeadlamps
FUEL PUMP
RELAYFuel Pump
Feed Usage
AUX B Uptter Battery Feed
AUX A Uptter Accessory Feed
5-98

Audio System(s) (cont.)
Fixed Mast Antenna.....................................3-51
Radio with CD............................................3-43
Rear Seat Audio (RSA)................................3-47
Setting the Time for Radios with HR
and MN Buttons.......................................3-41
Setting the Time for Radios with the Set
Button....................................................3-41
Theft-Deterrent Feature................................3-49
Understanding Radio Reception.....................3-51
Automatic Headlamp System............................3-16
Automatic Transmission
Fluid..........................................................5-23
Operation...................................................2-20
B
Battery..........................................................5-40
Run-Down Protection...................................3-18
Before Leaving on a Long Trip.........................4-20
Bench Seat..................................................... 1-6
Brake
Anti-Lock Brake System (ABS)........................ 4-6
Emergencies................................................ 4-8
Parking......................................................2-23
System Inspection.......................................6-29
System Warning Light..................................3-29Brakes..........................................................5-37
Braking........................................................... 4-5
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-16
Bucket Seats, Rear.........................................1-13
Bulb Replacement...........................................5-48
Front Turn Signal and Parking Lamps.............5-52
Halogen Bulbs............................................5-48
Replacement Bulbs......................................5-54
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-52
Buying New Tires...........................................5-65
C
California Fuel.................................................. 5-5
Canadian Owners................................................ ii
Capacities and Specications............................5-99
Carbon Monoxide...........................2-26, 4-23, 4-34
Care of
Safety Belts................................................5-86
Your CD Player...........................................3-51
Your CDs ...................................................3-51
Center Rear Passenger Position, Safety Belts.....1-30
Chains, Tire...................................................5-68
Charging System Light....................................3-28
2

Customer Assistance Information (cont.)
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the
Canadian Government..............................7-10
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Doing Your Own Service Work........................... 5-4
Dome Lamps.................................................3-17
Door
Locks.......................................................... 2-6
Power Door Locks......................................... 2-7
Programmable Automatic Door Locks............... 2-7
Rear Doors.................................................2-11
Sliding Side Door.......................................... 2-8
Driver
Position, Safety Belt.....................................1-19
Driver Information Center (DIC).........................3-38
Driving
At Night.....................................................4-13
City...........................................................4-18
Defensive..................................................... 4-2
Drunken....................................................... 4-2Driving (cont.)
Freeway.....................................................4-19
Hill and Mountain Roads..............................4-21
In Rain and on Wet Roads...........................4-15
Rocking Your Vehicle to Get it Out.................4-28
Winter........................................................4-23
E
Electrical System
Add-On Equipment......................................5-92
Fuses and Circuit Breakers...........................5-93
Headlamp Wiring.........................................5-92
Instrument Panel Fuse Block.........................5-93
Power Windows and Other Power Options......5-92
Underhood Fuse Block.................................5-96
Windshield Wiper Fuses...............................5-92
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-40
Check and Service Engine Soon Light............3-31
Coolant......................................................5-25
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-30
Cooling System Inspection............................6-28
Cover........................................................5-17
Engine Compartment Overview......................5-12
Exhaust.....................................................2-26
Fan Noise..................................................5-34
4

G
Gage
Check Gages Warning Light..........................3-36
Engine Coolant Temperature.........................3-30
Fuel..........................................................3-37
Oil Pressure...............................................3-34
Speedometer..............................................3-26
Voltmeter Gage...........................................3-28
Garage Door Opener.......................................2-29
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5
Headlamp Wiring............................................5-92
Headlamps
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-48
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-9
Front Turn Signal and Parking Lamps.............5-52
Halogen Bulbs............................................5-48
Headlamps and Sidemarker Lamps................5-48Headlamps (cont.)
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-15
Headlamps and Sidemarker Lamps...................5-48
Heater...........................................................3-19
Highbeam On Light.........................................3-35
Highway Hypnosis...........................................4-21
Hill and Mountain Roads..................................4-21
HomeLink
®Wireless Control System.................2-29
HomeLink®Wireless Control
System Operation........................................2-30
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-19
I
Ignition Positions.............................................2-17
Infants and Young Children, Restraints...............1-36
Ination -- Tire Pressure..................................5-61
Inspection
Brake System.............................................6-29
Engine Cooling System................................6-28
Exhaust System..........................................6-28
Fuel System...............................................6-28
Part C - Periodic Maintenance.......................6-28
6