service Oldsmobile Achieva 1998 s Service Manual

NOTICE: (Continued)
If your tires have too much air (overinflation),
you
can get the following:
Unusual wear
0 Bad handling
Rough ride
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 Wa).
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back
on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 OOO to 13 O00 km). Any time you notice unusual
wear, rotate your tires as soon as possible and check
wheel alignment.
Also check for damaged tires or wheels.
See ‘When It’s Time for New Tires” and ‘Wheel
Replacement” later in this section for more information.
The purpose of regular rotation is to achieve more
uniform wear for
all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services” in the Index for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.
6-38 -

Buying New Tires
To find out what kind and size of tires you need, look at
the Tire-Loading Information label.
The tires installed on your vehicle when it was new had
a Tire Performance Criteria Specification (TPC Spec)
number on each tire’s sidewall, When you get new tires,
get ones with that same TPC Spec number. That way
your vehicle will continue to have tires that are designed
to give proper endurance, handling, speed rating,
traction, ride and other things during normal service on
your vehicle.
If your tires have an all-season tread
design, the TPC number will be followed by an
“MS”
(for mud and snow).
If you ever replace your tires with those not having a
TPC Spec number, make sure they are the same size,
load range, speed rating and construction type (bias,
bias-belted or radial) as your original tires.
Mixing tires could cause you to lose control while
driving.
If you mix tires of different sizes or types
(radial and bias-belted tires), the vehicle may not
handle properly, and you could have a crash.
Using tires of different sizes may also cause
damage to your vehicle. Be sure to use the same
size and type tires
on all wheels.
It’s all right to drive with your compact spare,
though. It was developed for use on your vehicle.
If you use bias-ply tires on your vehicle, the
wheel rim flanges could develop cracks after
many miles of driving.
A tire and/or wheel could
fail suddenly, causing a crash. Use only radial-ply
tires with the wheels
on your vehicle.
6-40

Uniform Tire Quality Grading
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance. (This
applies only to vehicles sold in the United States.) The
grades
are molded on the sidewalls of most passenger
car tires. The Uniform Tire Quality Grading system does
not apply to deep tread, winter-type snow tires,
space-saver
or temporary use spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to Federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course.
For example, a tire graded
150 would wear one and a
half
(1 1/2) times as well on the government course
as a tire graded
100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from the norm
due to variations in driving habits, service practices
and differences in road characteristics and climate.
Traction -- A, B, C
The traction grades, from highest to lowest, are A, B,
and C, and they represent the tire’s ability to stop
on wet pavement as measured under controlled conditions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor
traction performance.
Warning: The traction grade assigned to this tire is based
on braking (straight ahead) traction tests and does not
include cornering (turning) traction.

Sheet Metal Damage
If your vehicle is damaged and requires sheet metal
repair or replacement, make
sure the body repair shop
applies anti-corrosion material to the parts repaired or
replaced to restore corrosion protection.
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 retailer or other service
outlets. Larger areas of finish damage can be corrected
in your retailer’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 retailer or an underbody car washing system can
do
this for you.
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,
Oldsmobile will repair, at no charge to the owner,
the surfaces
of new vehicles damaged by this fallout
condition within
12 months or 1.2,OOO miles (20 000 km)
of purchase, whichever occurs first.
6-50

Vehicle Identification Number (VIN)
ENGINE/ 1998 T ASSEMBLY
CODE MODEL YEAR PLANT
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 bottom of your spare tire
cover. 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
Be sure that this label is not removed from the vehicle.
special equipment.
Electrical System
Add-on
Electrical Equipment
I NOTICE:
Don’t add anything electrical to your vehicle
unless you check with your retailer 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.
6-52

Fuse
PWR ST
RDO IGN
HTR-A/C
CRUISE
TAIL LPS
LTR
WIPER
Usage
Power Seat
Radio
Heater/Air Conditioning Blower,
Daytime Running Lamps, Automatic
Lamp Control
Cruise Control
Parking Lamps, Taillamps, Sidemarker
Lamps, License Lamps, Instrument
Panel Lights, Underhood Lamp,
Headlamp Warning Alarm
Cigarette Lighter, Auxiliary Power
Outlet
Windshield Wipers/Washers
02 Heated Oxygen Sensors
DR UNLK Automatic Door Unlock
ALARM Automatic Transaxle, Automatic Door
Unlock, Alarm Module (Illuminated
Entry, Warning Chimes), Traction Telltale, Rear Window Defogger,
Remote Lock Control
Fuse
FOGLFTP
PRNDL
DR LK
2
AIR BAG
HORN
Usage
Fog Lamps
Instrument Cluster, Powertrain
Computer, Park-Lock Solenoid,
Electronic PRNDL
Door Locks
Air Bag-Power
Horn, Service Tool Power
INST Instrument Cluster
STOP HAZ Stoplamps, Hazard Lamps,
Anti-Lock Brakes
PCM
DR LK 1
INST LPS
RR DEF
HDLP
Powertrain Control Module
Door Locks, Remote Lock Control
Instrument Panel Lights, Fog Lamps
Rear Window Defogger
Headlamps, Daytime Running Lamps (Circuit Breaker)
6-55

Section 7 Maintenance Schedule
This section covers the maintenance required for your vehicle. Your vehicle needs these services to retain its safety,
dependability and emission control performance.
7-2
7-3
7-4
7-5 7-5
7-6
7-6 Introduction
How
This Section is Organized
Part
A: Scheduled Maintenance Services
Short Trip/City Definition
Short Trip/City Intervals
Long TripMighway Definition
Long Tripmighway Intervals 7-7
7-2
1
7-30
7-34
7-36
7-37
Short
Trip/City Maintenance Schedule
Long Trip/Highway Maintenance Schedule
Part B: Owner Checks and Services
Part
C: Periodic Maintenance Inspections
Part
D: Recommended Fluids and Lubricants
Part
E: Maintenance Record

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 retailer’s service department or another
qualified service center do these jobs.
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 retailer’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
~

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 Oldsmobile retailer.
This
part tells you the maintenance services you should
have done and when you should schedule them.
If you
go to your retailer 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:
0 carry passengers and cargo within recommended
limits.
You will find these limits on your vehicle’s
Tire-Loading Information label. See “Loading Your
Vehicle’’
in the Index.
0 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

Maintenance Schedule
I Short TripKity Definition 1
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.
Most trips include extensive idling (such as frequent
driving
in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
your vehicle. (With some models, you should never
tow
a trailer. See “Towing a Trailer” in the Index.)
If the vehicle is used for delivery service, police, taxi
or other commercial application.
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 sooner:
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Every 6,000 Miles (10 000 km): Chassis Lubrication
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving in dusty conditions.
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Tank, Cap and Lines Inspection.
Every 50,000 Miles (83 000 km): Automatic Transaxle
Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Change
(or
3 months, whichever occurs first).
(or
6 months, whichever occurs first). Tire Rotation.
These intervals only summarize maintenance services.
Be sure to filllow the complete maintenance schedule
on
the following pages.
7-5