1994 CHEVROLET ASTRO PASSENGER fuel

Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp
(SERVICE ENGINE SOON )
This light on your instrument cluster lets you know when your emission
system needs service. The light will come on briefly when you start your
engine to let you know that the system is working. If it does not come on
when you start your engine, or if it comes
on and stays on while you’re
driving, your system may need service. Your vehicle should still be
driveable, but you should have your system serviced right away.
Loading Your Vehicle
The Certificationire
label is found on the
rear edge of the
driver’s door. The
label shows the size of
your original tires and
the inflation pressures
needed to obtain the
gross weight capacity
of your vehicle.
This is called the GVWR (Gross Vehicle Weight Rating). The GVWR
includes the weight of the vehicle, all occupants, fuel and cargo.
The CertificatiodTire label
also tells you the maximum weights for the
front and rear axles, called Gross Axle Weight Rating (GAWR). To find out
the actual loads on your front and rear axles, you need
to go to a weigh
station and weigh your vehicle. Your dealer can help you with this. Be sure
to spread out your load equally on both sides of the centerline.
Never exceed
the GVWR for your vehicle, or the Gross Axle Weight Rating
(GAWR) for either the front or rear axle.
6-44

Downloaded from www.Manualslib.com manuals search engine Inflation - Tire Pressure
The Certificatioflire label which is on the rear edge of the driver’s door,
shows the correct inflation pressures for your tires, when they’re cold.
“Cold” means your vehicle has been sitting for at least three hours or driven
no more than a mile.
NOTICE:
Don’t let anyone tell you that underinflation or overinflation is
all right.
It’s not. If your tires don’t have enough air
(underinflation) you can get:
0 Too much flexing
Too much heat
Tire overloading
0 Bad wear
0 Bad handling
0 Bad fuel economy.
If your tires have too much air (overinflation), you can get:
@ Unusual wear
0 Bad handling
6 Rough ride
6 Needless damage from road hazards.
When to Check
Check your tires once a month or more.
Don’t forget your compact spare tire. It should be at
60 psi (420 kPa).
How to Check
Use a good quality pocket-type gage to check tire pressure. Simply looking
at the tires will not tell you the pressure, especially if you have radial tires
- which may look properly inflated even if they’re underinflate\
d.
If your tires have valve caps, be sure to put them back
on. They help prevent
leaks by keeping out dirt and moisture.

Downloaded from www.Manualslib.com manuals search engine Finish Damage
Any stone chips, fractures or deep scratches in the finish should be repaired
right away. Bare metal will corrode quickly and
may develop into a major
repair expense.
Minor chips and scratches can be repaired with touch-up materials available
from your dealer or other service outlets. Larger areas
of finish damage can
be corrected in your dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust control can collect on
the underbody. If these are not removed, accelerated
corrosion (rust) can
occur on the underbody parts such as fuel lines, frame, floor pan, and
exhaust system even though they have corrosion protection.
At least every spring, flush these materials from the underbody with plain
water. Clean any areas where mud and other debris can collect. Dirt packed
in closed areas of the frame should be loosened before being flushed. Your
dealer or
an underbody vehicle washing system can do this for you.
Fiberglass Springs
I NOTICE:
Don’t use corrosive or acidic cleaning agents, engine degreas\
ers,
aluminum cleaning agents
or other harsh solvents to clean
fiberglass springs; they’ll damage the springs.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a chemical fallout.
Airborne pollutants can fall upon and attack painted surfaces on your
vehicle. This damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched into the paint surface.
Although no defect in the paint job causes this,
GM will repair, at no charge
to the owner, the surfaces
of new vehicles damaged by this fallout condition
within
12 months or 12,000 miles (20 000 km) of purchase, whichever
comes first.
6-61

Downloaded from www.Manualslib.com manuals search engine Capacities and Specification Charts
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
truck dealer.
Engine Identification
Engine Description
Type VIN Code
Fuel System
Produced By
Emissions
*Throttle Body Fuel Injection
**Central
Port Fuel Injection
Wheel Nut Torque
DESCRIPTION
Base or Optional Wheel
4.3L
V6
Z
TBI*
U.S.
L.D.
6-68
4.3L
V6
W
CPI* *
U.S.
L.D.
TORQUE
100 ft. lbs. (140 Nom)

Downloaded from www.Manualslib.com manuals search engine Cooling System Capacity
ENGINE
4.3L
4.3L
VIN CODE
Z
w
QUANTITY* Without Rear
Heater
13.5 Quarts
( 12.8 Liters)
13.5 Quarts
(12.8 Liters)
QUANTITY*
With Rear Heater
16.5 Quarts
( 15.5 Liters)
16.5 Quarts
( 15.5 Liters)
*All quantities are approximate. After refill,
the level MUST be checked.
Crankcase Capacity
ENGINE
4.3L
4.3L
VIN CODE
Z
w
QUANTITY*
Without Filter
4 Quarts
(3.8 Liters)
4 Quarts
(3.8 Liters)
QUANTITY*
With Filter
4.5 Quarts
(4.3 Liters)
4.5 Quarts
(4.3 Liters)
*All quantities are approximate. After refill, the level MUST be checked.
Do not overfill.
Fuel Tank Capacity
TYPE
Standard Tank
*All quantities are approximate.
QUANTITY*
27 Gallons (102 Liters)
6-69

Downloaded from www.Manualslib.com manuals search engine NAME
DRL**
PWR
MIRRORS*
TRAILER*
CIRCUITS
PROTECTED
Canadian Daytime Running
Lights
Power Mirror
Trailer Wiring Harness
FUSE
10 Amp
3 Amp
30 Amp
*In-line fuse
**Canada only
***In-line fuse (certain models)
Service Replacement Part and Filter
Recommendations
ENGINE (VIN)
OIL FILTER
AIR CLEANER FILTER
PCV VALVE
SPARK PLUGS*
FUEL FILTER
RADIATOR CAP 4.3L (2)
PF52
A773C
CV789C
.CR43TSM
GF48
1
RC36
*Use copper-cored resistor type spark plugs.
CIRCUIT
BREAKER
4.3L
(W)
PF52
A1163C
cv774c
.CR43TSM GF48
1
RC36
6-74

Downloaded from www.Manualslib.com manuals search engine Scheduled Maintenance Services
This part tells you the maintenance services you should have done and when
you should schedule them. Your GM dealer knows your vehicle best and
wants you to be happy with
it. If you go to your dealer for all your service
needs, you’ll know
that GM-trained and supported service people will
perform the work using genuine GM parts.
These schedules are for vehicles that:
0 carry passengers and cargo within the recommended limits. You will
find these limits on your vehicle’s Certification Label. See “Loading
Your Vehicle”
in the Index.
are driven on regular road surfaces, and within legal driving limits, as
described in Section
4, Your Driving and the Road.
use the proper fuel. See “Fuel” in the Index.
Selecting The Proper Maintenance Schedule
Your driving conditions and how you use your vehicle will help you
determine which schedule to use. The schedules are found later in this
section.
MAINTENANCE SCHEDULE I
Is any one of these true for your vehicle?
0 Most trips are less than 4 miles (6 kilometers).
0 Most trips are less than 10 miles (16 kilometers) and the outside
temperatures are below freezing.
0 The engine is at low speed most of the time (as in stop-and-go traffic,
0 You operate in dusty areas.
door-to-door
delivery, or other commercial uses).
You tow a trailer.
If any one (or more) of these is true for your driving, follow Schedule I. The
chart for Schedule
I has plus signs (+).
MAINTENANCE SCHEDULE I1
Follow Schedule I1 ONLY if none of the above conditions are true. The
chart for Schedule
I1 has dots (0).
7-3

Downloaded from www.Manualslib.com manuals search engine MAlNTENANCE SCHEDULE I/
Item Miles (000) 7.5 15 22.5 30
No. Kilometers (000) 12.5 25 37.5 50
Service
Oil Filter Change*- 12 Months, or
1 12 Months, or I 1 1 I
2 Chassis Lubrication-Every
3 Cooling System Service*
-Every
24 Months or
4 I Air Cleaner Filter Replacement* I I I I 0
5 Front Wheel Bearing Repack
(2WD Only) 0
6 Transmission Service **
7 Fuel Filter Replacement*$ 0
8 Spark Plug Replacement* 0
9 Spark Plug Wire Inspection*
10 Engine Timing Check*$
11 Fuel Tank, Cap and Lines
12 Engine Accessory Drive Belt
13 Tire and Wheel Rotation
0 0
14 Drive Axle Service 0.00
15 Brake Systems Inspection** Inspection*$
Inspection”
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index
$ The California Air Resources Board has determined that the fail\
ure to perform this
maintenance item will not nullify the emission warranty or limi\
t recall liability prior
to the
completion
of vehicle useful life. General Motors, however, urges that all recommended
maintenance services be performed at the indicated intervals and\
the maintenance be
recorded.
THE SERVICES SHOWN
ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER
60,000 MILES AT THE SAME INTERVALS.
TI 003
7-6