1993 CHEVROLET ASTRO PASSENGER service

Downloaded from www.Manualslib.com manuals search engine Good Battery Dead Battery
K350
10. Now start the vehicle with the good battery and run the engine fo\
r
11. Try to start the vehicle with the dead battery.
awhile.
If it
won't start after a few tries, it probably needs service.
GOOD BAlTERY
I
DEAD BAlTERY
K1508
12. Remove the cables in reverse order to prevent electrical shorting. Take
care that they don't touch each other or any other metal.
5-6

Downloaded from www.Manualslib.com manuals search engine Towing Your Vehicle
Try to have a GM dealer or a professional towing service tow your vehicle.
They can provide the right equipment and know how to tow it without
damage.
If your vehicle has been changed or modified since it was factory-new by
adding aftermarket items like fog lamps, aero skirting, or special tires and
wheels, these things could be damaged during towing.
Before you do anything, turn on the hazard warning flashers.
When you call, tell the towing service:
That, if your vehicle has all-wheel drive or rear-wheel drive with fog
lamps, it cannot be towed from the front with sling-type equipment.
That your vehicle has rear-wheel drive, or that it has the all-wheel-drive
option.
The make, model, and year of your vehicle.
Whether you can still move the shift lever.
If there was an accident, what was damaged.
* To help avoid injury to you or others:
I
Never let passengers ride in a vehicle that is being towed.
Never tow faster than safe or posted speeds.
Never tow with damaged parts not fully secured.
Never get under your vehicle after it has been lifted by the tow
Always use separate safety chains on each side when towing a
truck.
I vehicle.
When your vehicle is being towed, have the ignition key
off. The steering
wheel should be clamped in a straight-ahead position, with a clamping device
designed
for towing service. Do not use the vehicle’s steering column lock for
this. The transmission should be in
N (Neutral) and the parking brake
released.
If your vehicle has the all-wheel drive option, it can only be towed with
all four wheels
off the ground. A dolly must be used under the un-raised
wheels when towing or the vehicle must be transported
on a flat bed
carrier.
5-7

Downloaded from www.Manualslib.com manuals search engine If there’s still no sign of steam, push the accelerator until the engine speed is
about twice
as fast as normal idle speed. Bring the engine speed back to
normal idle speed after two
or three minutes. Now see if the warning stops.
But then,
if you still have the warning, TURN OFF THE ENGINE AND GET
EVERYONE OUT OF THE VEHICLE until it cools down.
You may decide not to
lift the hood but to get service help right away.
PO424
When you decide it’s safe to lift the hood, here’s what \
you’ll see:
A. Coolant recovery tank
B. Radiator pressure cap
C. Engine fan
If the coolant inside the coolant recovery tank is boiling, don’t do anything
else until
it cools down.
5-1 0

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
L
......... ..... -&-.A- -
I 5, "9
. .
Here you will find information about the care of your vehicle \
. This Section
begins with service and fuel information. and then
it shows how to check
important fluid and lubricant levels
. There is also technical information about
your vehicle. and a section devoted to its appearance care
.
Service ........................................................................\
........................................... 6-3
Fuel
........................................................................\
................................................ 6-4
Checking Things Under the Hood
....................................................................... \
6-8
Hood Release
........................................................................\
............................ 6-8
Engine
Oil ........................................................................\
.................................. 6-9
Engine Cover
........................................................................\
........................... 6-15
Air Cleaner
........................................................................\
............................... 6-19
Automatic Transmission Fluid
........................................................................\
. 6-20
Rear Axle
........................................................................\
................................. 6-23
All-Wheel Drive
........................................................................\
........................ 6-23
Transfer Case
........................................................................\
.......................... 6-23
Front Axle
........................................................................\
................................. 6-24
Engine Coolant
........................................................................\
........................ 6-26
Power Steering Fluid
........................................................................\
............... 6-30
Windshield Washer Fluid
........................................................................\
......... 6-31
Brake Master Cylinder
........................................................................\
............. 6-32
6-1

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
Replacing Brake System Parts ........................................................................\
.. 6-33
Fluid Leak Check
........................................................................\
........................ 6-34
Battery
........................................................................\
.......................................... 6-34
Vehicle Storage
........................................................................\
........................... 6-34
Bulb Replacement
........................................................................\
....................... 6-35
Other Maintenance Items
........................................................................\
........... 6-38
Loading Your Vehicle
........................................................................\
.................. 6-42
Tires ........................................................................\
.............................................. 6-44
Appearance Care
........................................................................\
........................ 6-52
Vehicle Identification Number
........................................................................\
..... 6-60
Service Parts Identification Label
...................................................................... 6-62
Capacities and Specification Charts
.................................................................. 6-64
Fuses and Circuit Breakers
........................................................................\
........ 6-68
6-2

Downloaded from www.Manualslib.com manuals search engine Service
Your General Motors dealer knows your vehicle best and wants you to be
happy with it. We hope you’ll go to your dealer for all your service needs.
You’ll get genuine
GM parts and GM-trained and supported service people.
We hope you’ll want to keep your GM vehicle
all GM. GM parts have one of
these marks:
K1604
Doing Your Own Service Work
If you want to do some of your own service work, you’ll want to get the
proper General Motors Service Manual. It tells you much more a\
bout how to
service your vehicle than this manual can.
To order the proper service
manual, see ‘Service Publications’’ in the Index.
You should keep a record with all parts receipts and list the mil\
eage and the
date .of any service work you perform. See “Maintenance Reco\
rd” in the
Index.
You can be injured
if you try to do service work on a vehicle without
knowing enough about
it.
Be sure you have sufficient knowledge, experience, and the
proper replacement parts and tools before you attempt any
vehicle maintenance task.
Be sure to use the proper nuts, bolts and other fasteners.
“English” and “metric” fasteners can be easily confus\
ed.
If you
use the wrong fasteners, parts can later break or fall off. You
I could be hurt.
6-3

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
NOTICE I-
Fuel
The 8th digit of your Vehicle Identification Number (VIN) sho\
ws the code letter for your engine. You will find the VIN at the top left of your instrument
panel. (See “Vehicle Identification Number” in the Index.)\

Use regular unleaded gasoline rated at 87 octane or higher. Wi\
th the 4.3L
(Code
W) engine, use premium unleaded gasoline rated at 91 octane or .
higher for high power performance, when towing a trailer or wi\
th a high
payload requirement. But when operating with a light load as a\
normal
condition, you may use middle grade or regular unleaded gasolin\
es.
The gasoline you use should meet specifications ASTM D4814 in the U.S.
and CGSB 3.5-92 in Canada. These fuels should have the proper \
additives,
so you should not have to add anything to the fuel.
In the
U.S. and Canada, it’s easy to be sure you get the right kind o\
f
gasoline (unleaded). You’ll see
UNLEADED right on the pump. And only
unleaded nozzles
will fit into your vehicle’s filler neck.
Be sure the posted octane
is at least 91 for premium, 89 for middle grade
and
87 for regular. If the octane is less than 87, you may get a heavy
knocking noise when you drive. If it’s bad enough,
it can damage your
engine.
6-4

Downloaded from www.Manualslib.com manuals search engine If you’re using fuel rated at 91 octane or higher and you still hear heavy
knocking, your engine needs service. But don’t worry if you hear a little
pinging noise when you’re accelerating or driving up a hill. That’s normal, and
you don’t have to buy a higher octane fuel to get rid of pinging. It’s the
heavy, constant knock that means you have a problem.
What about gasoline with blending materials that contain oxygen,\
such as MTBE
or alcohol?
MTBE is “methyl tertiary-butyl ether.” Fuel that is no more th\
an 15% MTBE is
fine for your vehicle.
Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more than
10% ethanol is fine for your vehicle.
Methanol is methyl or wood alcohol.
Fuel that is more than
5% methanol is bad for your vehicle. Don’t use It.
It can corrode metal parts in your fuel system and also damage plastic
and rubber parts. That damage wouldn’t be covered under your\
warran
And even at 5% or less, there must be “cosolvents” md cc----6io
preventers in this fuel to help avoid these problems
Gasolines for CIeaner Air
Your use of gasoline with detergent additives will help prevent deposits fro\
m
forming in your engine and fuel system. That helps keep your engine in tune
and your emission control system working properly. It’s good \
for your vehicle,
and you’ll be doing your part for cleaner air.
Many gasolines are now blended with materials called oxygenates.\
General
Motors recommends that you use gasolines with these blending ma\
terials,
such as MTBE and ethanol. By doing
so, you can help clean the air,
especially in those parts of the country that have high carbon monoxide
levels.
In addition, some gasoline suppliers are now producing reformulated \
gasolines. These gasolines are specially designed to reduce vehicle
emissions. General Motors recommends that you use reformulated g\
asoline.
By doing
so, you can help clean the air, especially in those parts of the
country that have high ozone levels.
You should ask your service station operators
if their gasolines contain
detergents and oxygenates, and
if they have been reformulated to reduce
vehicle emissions.
6-5