1998 CHEVROLET ASTRO air condition

Downloaded from www.Manualslib.com manuals search engine Rear Axle Capacity
Standard Rear Axle . . . . . . . . . . . . . . 3.5 pint (1.7 L)
Locking Rear Axle . . . . . . . . . . . 3.5 pint (1.7 L)
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used. If
you’re not sure, ask your dealer.
Refrigerant should be added only by a qualified
NC technician.
Air Conditioning Refrigerant Capacity
mPe
R- 134a
R- 134a
System
C-60**
C-69***
*All quantities are approximate.
**Front
A/C only.
***Front and Rear A/C.
Quantity*
2 lbs. (0.91 kg)
3 lbs,
(1.36 kg)
NOTICE:
R-134a refrigerant is not compatible with R-12
refrigerant in an air conditioning system. R-12 in
an R-134a system
will cause compressor failure,
refrigerant oil sludge
or poor air conditioning
system performance.
6-68

Downloaded from www.Manualslib.com manuals search engine Introduction
IMPORTANT-
KEEP ENGINE OIL
AT THE PROPER
LEVEL AND CHANGE A$
RECOMMENDED
Plan
Have you purchased the GM Protection Plan? The Plan
supplements
your new vehicle warranties. See your
Warranty and Owner Assistance booklet, or your GM
dealer for details.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment. All recommended maintenance procedures
are important. Improper vehicle maintenance can even
affect the quality
of the air we breathe. Improper fluid
levels
or the wrong tire inflation can increase the level
of emissions from your vehicle. To help protect our
environment, and to keep your vehicle in good
condition, please maintain your vehicle properly.
7-2

Downloaded from www.Manualslib.com manuals search engine How This Section is Organized
The remainder of this section is divided into five parts:
“Part
A: Scheduled Maintenance Services” shows
what
to have done and how often. Some of these
services can be complex,
so unless you are technically
qualified and have the necessary equipment,
you should
let your dealer’s service department or another qualified
service cpqter do these
job.
I
Performing maintenance work on a vehicle can
be dangerous. In trying to do some jobs, you can
be seriously injured.
Do your own maintenance
work only if you have the required know-how
and the proper
tools and equipment for the job.
If you have any doubt, have a qualified
technician do the work.
If you are skilled enough to do some work
on your
vehicle, you will probably want to get
the service
information. See “Service and Owner Publications”
in the Index. “Part
B: Owner Checks and Services”
tells you what
should be checked and when.
It also explains what you
can easily do to help keep your vehicle in good condition.
“Part
C: Periodic Maintenance Inspections” explains
important inspections that your dealer’s service department
or another qualified service center should perform.
“Part
D: Recommended Fluids and Lubricants’’ lists
some recommended products
to help keep your vehicle
properly maintained. These products, or their
equivalents, should be used whether you do the work
yourself or have it done.
“Part
E: Maintenance Record” provides a place for
you to record the maintenance performed on your
vehicle. Whenever any maintenance is performed, be
sure to write
it down in this part. This will help you
determine when your next maintenance should be done.
In addition,
it is a good idea to keep your maintenance
receipts. They may be needed
to qualify your vehicle for
warranty repairs.
7-3

Downloaded from www.Manualslib.com manuals search engine Part A: Scheduled Maintenance
Services
Using Your Maintenance Schedule
We at General Motors want to help you keep your
vehicle
in good working condition. But we don’t know
exactly how you’ll drive
it. You may drive very short
distances
only a few times a week. Or you may drive
long distances all
the time in very hot, dusty weather.
You may use your vehicle in making deliveries. Or
you may drive
it to work, to do errands or in many
other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may even need
more frequent checks and replacements than you’ll find
in the schedules in this section. So please read this
section and note how you drive. If you have any
questions on how to keep your vehicle in good
condition, see your GM dealer.
This part tells you the maintenance services you should
have done and when you should schedule them. If you
go to your dealer for your service needs, you’ll know
that GM-trained and supported service people
will
perform the work using genuine GM parts. The
proper fluids and lubricants
to use are listed in
Part
D. Make sure whoever services your vehicle
uses these. All parts should be replaced and all
necessary repairs done before
you or anyone else
drives the vehicle.
These schedules are for vehicles
that:
carry passengers and cargo within recommended
limits.
You will find these limits on your vehicle’s
Certificationmire label. See “Loading Your Vehicle”
in the Index.
are driven on reasonable road surfaces within legal
driving limits.
0 use the recommended fuel. See “Fuel” in the Index.
Selecting the Right Schedule
First you’ll need to decide which of the two schedules is
right for your vehicle. Here’s how to decide which
schedule to follow:
7-4

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
I Short Trip/City Definition
Follow the Short Trip/City Maintenance Schedule if any
one of these conditions
is true for your vehicle:
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
driving
in stop-and-go traffic).
0 Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
If the vehicle is used for delivery service, police, taxi
One of the reasons you should follow this schedule if
you operate your vehicle under any of these conditions
is that these conditions cause engine oil to
break
down sooneE
0 Most trips include extensive idling (such as frequent
your vehicle.
or other commercial application.
I Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change (or
3 months, whichever occurs first). Chassis
Lubrication (or
3 months, whichever occurs first). Drive
Axle Service (or
3 months, whichever occurs first).
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving
in dusty conditions. Front
Wheel Bearing Repack
(2WD only) (or at each brake
relining, whichever occurs first). Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (normal conditions).
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection. Fuel Tank,
Cap and Lines Inspection.
7-5

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
L Long Tripmighway Intervals I
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every 12 months, whichever occurs first).
Chassis Lubrication
(or every 12 months, whichever
occurs first). Drive Axle Service. Tire Rotation.
Every 15,000 Miles (25 000 km): Automatic
Every 30,000 Miles (50 000 km): Fuel Filter
Transmission Service (severe conditions
only).
Replacement.
Air Cleaner Filter Replacement. Front
Wheel Bearing Repack
(2WD only) (or at each brake
relining, whichever occurs first).
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (normal conditions).
Long Tripmighway Intervals
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection.
Fuel Tank,
Cap and Lines Inspection.
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
These intervals only summarize maintenance services.
Be sure to follow the complete maintenance schedule on
the following pages.
Every 100,000 Miles (166 000 km): Spark Plug Wire
7-7

Downloaded from www.Manualslib.com manuals search engine 1 Short TripKity Maintenance Schedule I
0 Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote?.)
velocity joints and axle seals for leaking. (See footnote
**.)
bearings (or at each brake relining, whichever occurs first).
under
one or more of these conditions:
0 Check readfront axle fluid level and add fluid as needed. Check constant
0 For Two-Wheel-Drive vehicles only: Clean and repack the front wheel
0 Change automatic transmission fluid and filter if the vehicle is mainly driven
- In heavy city traffic where the outside temperature regularly reaches
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
90 OF (32 O C) or higher.
- Uses such as found in taxi, police or delivery service.
If you do not use yaw- vehicle under any of these conditions, change thejiruid
andfilter every
50,000 miles (83 000 km).
18,000 Miles (30 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
7-11

Downloaded from www.Manualslib.com manuals search engine I Short TripKity Maintenance Schedule I
30,000 Miles (50 000 km) (Continued)
0
0
0
For Two-Wheel-Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Replace
fuel filter.
An Emission Control Service. (See footnote+.)
Replace air cleaner filter.
An Emission Control Service.
Change automatic transmission fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
- In heavy city traffic where the outside temperature regularly reaches
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
and.filter every
50,000 miles (83 000 km).
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
90°F (32°C) or higher.
7-14