1998 CHEVROLET ASTRO Owners Manual

Downloaded from www.Manualslib.com manuals search engine Vehicle Identification Number (VIN)
II
I
ENGINE/l998 7 - ASSEMBLY
CODE MODEL YEAR
PLANT I
This is the legal identifier 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 Certification and Service Parts
labels and the certificates of title and registration.
Engine Identification
The 8th character in your VIN is the engine code. This
code will help you identify your engine, specifications
and replacement parts.
Service Parts Identification Label
You’ll find this label on the inside of the rear edge of the
passenger’s door. It’s very helpful if
you ever need to
order parts.
On this label is:
your VIN,
0 the model designation,
0 paint information and
a list of all production options and
special equipment.
Be sure that this label
is not removed from the vehicle.
6-59

Downloaded from www.Manualslib.com manuals search engine Electrical System
Add-on Electrical Equipment
I NOTICE:
Don’t add anything electrical to your vehicle
unless you check with your dealer first. Some
electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can
keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see “Servicing
Your Air Bag-Equipped Vehicle” in the Index.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the lamp switch. An electrical overload will cause the
lamps to go on and off, or in some cases to remain off. If
this happens, have your headlamp wiring checked
right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools. If
the overload is caused by some electrical problem and
not snow, etc., be sure to get it fixed.
Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power
windows and other power accessories. When the current
load is
too heavy, the circuit breaker opens and closes,
protecting the circuit until the problem is fixed or
goes away.
6-60

Downloaded from www.Manualslib.com manuals search engine 11
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links. This greatly reduces the
chance of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
Spare fuses and a fuse puller are located in the
underhood electrical center.
You can remove fuses with
the fuse puller. Remember to replace any of the spare
fuses you use,
so you will have some if you ever need
them again.
If you ever have a problem on the road and don’t have a
spare fuse, you can borrow one that has the same
amperage. Just pick some feature of your vehicle that
you can get along without
-- like the radio or cigarette
lighter
-- and use its fuse, if it is the correct amperage.
Replace
it as soon as you can.
There are two fuse blocks in your vehicle: one is inside
the vehicle and one is in the engine compartment.
Instrument Panel Fuse Block
The fuse block is on the lower portion of the instrument
panel on the driver’s side.
6-61

Downloaded from www.Manualslib.com manuals search engine / 18 24
5 11 17 23 c7 c7 c7 17
4 ~ 10 16
3 9 15 21 c7 E7 c7 E7
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7 13 19 E7 c7 c7 E3
FuseKircuit
Breaker Usage
4
8
9
2
3
FuseKircuit Breaker
Usage I
1 Stop/Turn/Hazard Lamps, CHMSL,
! Chime Module
Not Used
Courtesy Lamps, Power Outside
Mirrors, Glove
Box Lamp, Dome
Reading Lamps, Vanity Mirror Lamps
10
11
DRL Relay, DRL Module, Chime
Headlamp Switch, Keyless Entry,
Cluster, Overhead Console, Interior
Lamps Module
Not Used
Cruise Module, Cruise Control Switch
Power Outlets, DLC, Subwoofer
Amplifier Starter Enable Relay
I
License Plate Lamp, Taillamps, I
Parking Lamps, Ashtray Lamp, Panel
Lights, Trailer Taillamps, Front and
Rear Sidemarker Lamps, Door Switch
Illumination, Headlamp Switch
Illumination, Rear Seat Audio
Illumination
Air
Bag System
Wiper Motor, Washer Pump, Upfitter
Relay Coil

Downloaded from www.Manualslib.com manuals search engine FuseKircuit Breaker Usage
12
13
14
15
16
17
L, M 1, M2 Blower Motor, Rear A/C
Relay Coil, Front Cont. Temp. Door
Motor,
HI Blower Relay, Defogger
Timer Coil
Cigar Lighter, Door Lock Switches,
Dutch Door Release Module
Cluster Illum, HVAC Controls, Chime
Module, Radio Illumination, Rear Heat
Switch Illumination, Rear
Wiper/Washer Switch Illumination,
Rear Liftgate Switch Illumination,
Remote Cassette Illumination, O/H
Console
DRL Lamps
Front Turn Signals, Rear Turn Signals,
Trailer Turn Signals, Back-up Lamps,
BTSI Solenoid
Radio: ATC (Standby), 2000 Series
(Main Feed), Rear Seat Audio Controls 19
20
FuseKircuit
Breaker Usage
18 VCM-Ign 3, VCM-Brake, LCWAL,
Cruise Stepper Motor Signal
Radio: ATC (Main Feed),
2000 Series
(Standby)
PRNDL/ Odometer, TCC Enable and
PWM Solenoid, Shift A and Shift B
Solenoids, 3-2 Downshift Solenoid
21
22
23
24
A
B Not Used
Security/Steering Module
Rear Wiper, Rear Washer Pump
Not Used (Circuit Breaker) Power Door
Lock
Relay, 6-way Power Seat, Remote
Control Door Lock Receiver, Dutch
Door Module, Dutch Door Release
(Circuit Breaker) Power Windows
6-63

Downloaded from www.Manualslib.com manuals search engine Underhood Electrical Center
c
SThRTER ENABLE ENABLE =CLAY
(,,,) (-) (COLI-
I
I
[ LIGHTING 1
(7)
(T)
(-)
(-)
The underhood electrical center is located toward the
rear
of the engine compartment on the driver’s side.
Lift the hood and open
the cover to gain access to this
fuse block.
Feed Usage
AUX B Upfitter Battery Feed
AUX A Upfitter Accessory Feed
Relay
A/C Relay (Rear Heat and A/C)
Upfitter Accessory Relay
Starter Enable Relay
A/C Enable Relay
Export Only Relay
Fuel Pump Relay
6-64

Downloaded from www.Manualslib.com manuals search engine Fuse/Circuit Breaker Usage
UPFIT-BATT Upfitter Battery Power Stud, Trailer
UPFIT-ACCY Upfitter Accessory Relay
Wiring
Harness
Spare
Fuse Puller*
Spare
Spare
ECM-B
HORN
A/C COMP
RR DEFOG
ENG-I
Fuse/Circuit Breaker Usage
IGN-E
ECM-I
Not used
LIGHTING
Not used
Not used Fuel Pump Relay and Motor, VCM,
Oil Pressure Switch/Sender
Horn Relay and Horn
A/C Enable Relay and Compressor
Heater-A/C Control Selector Switch,
Rear Window Defogger
Oxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
Evaporative Emission Canister Purge
Solenoid, Linear EGR Valve
Solenoid, VCM EGR HI BATT
IGN A
IGN B
ABS
NC
RR HTRIAC
Spare A/C
Enable Relay Coil
Fuel Injectors
1-6, Crankshaft
Position Sensor, VCM, Coil Driver
Module (EST)
Park Lamps Fuse, DRL Fuse,
Headlamp and Panel Dimmer Switch
SteeringBecurity Fuse, Courtesy
Fuse, ACSY CB, Stop/Hazard Fuse,
Auxiliary Power Fuse, Cigar Lighter
Fuse, Radio Battery Fuse
Starter Relay, Ignition Switch
Ignition Switch
Electronic Brake Control Module Blower Motor Resistor, Blower
Relay
Auxiliary Heater NC Relay
Not used
*A fuse puller is included
in the underhood electrical
center. You will also find spare fuses.
6-65

Downloaded from www.Manualslib.com manuals search engine Replacement Bulbs
Exterior Lamps
Halogen Headlamps - Sealed Beam
Halogen Headlamps
- Composite
Halogen Headlamps
- Composite
Parking,
Turn Signal Lamps
Rear, Stoplamps
Sidemarker Lamps
Back-up Lamps
Quantity
2
2
2
2
2
4
2
Trade No.
H6054
9006 (Low-Beam)
9005 (High-Beam)
3 157NA
2057 194
1156
6-66