1993 CHEVROLET LUMINA check engine

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When It’s Time for New Tires
One way to tell when it’s time for new
tires is to check the treadwear
indicators, which will appear when your
tires have only
2/32 inch (1.6 mm) or less
of tread remaining.
You need a new tire if:
You can see the indicators at three
You can see cord or fabric showing
The tread or sidewall is cracked, cut
places around
the tire.
through the tire’s rubber.
or snagged deep enough to show cord
or fabric.
The tire has a bump, bulge or split.
The tire has a puncture, cut, or other
damage that can’t be repaired well
because of the size or location of the
damage.
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 a
“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.
I CAUTION I
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. 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
limited use
on your vehicle.

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Glass
Glass should be cleaned often. GM
Glass Cleaner
(GM Part No. 1050427)
or a liquid household glass cleaner will
remove normal tobacco smoke and dust
films.
Don’t use abrasive cleaners on glass,
because they may cause scratches.
Avoid placing decals on the inside rear
window, since they may have to be
scraped off later.
If abrasive cleaners are used on the
inside of the rear window, an electric
defogger element may be damaged. Any
temporary license should not be
attached across the defogger grid.
Cleaning the Outside of the
Windshield and Wiper Blades
If the windshield is not clear after using
the windshield washer, or
if the wiper
blade chatters when running, wax or other material may be on the blade or
windshield.
Clean the outside of the windshield
with GM Windshield Cleaner, Bon-Ami
Powder@
(GM Part No. 1050011). The
windshield is clean
if beads do not form
when you rinse it with water.
Clean the blade by wiping vigorously
with a cloth soaked in
full strength
windshield washer solvent. Then rinse
the blade with water.
Wiper blades should be checked
on a
regular basis and replaced when worn.
Cleaning the Outside of Your
Chevrolet
The paint finish on your vehicle
provides beauty, depth of color, gloss
retention and durability.
Washing Your Vehicle
The best way to preserve your vehicle’s
finish is to keep it clean by washing it
often with lukewarm or cold water.
Don’t wash your vehicle in the direct
rays of the sun. Don’t use strong soaps
or chemical detergents. Use liquid hand,
dish or car washing (non-detergent) soaps. Don’t use cleaning agents that
contain acid or abrasives. All cleaning
agents should be flushed promptly and
not allowed to dry on the surface, or
they could stain. Dry the finish with a
soft, clean chamois or a 100% cotton
towel
to avoid surface scratches and
water spotting.
High pressure vehicle washes may
cause water
to enter your vehicle.

Downloaded from www.Manualslib.com manuals search engine Fuses & Circuit Breakers
The wiring circuits in your vehicle are
protected
from short circuits by a
combination of fuses, circuit breakers,
and fusible thermal links in the wiring
itself. This greatly reduces the chance
of
fires caused by electrical problems.
Some fuses are located in a fuse block
in the glove box
as shown above. Pull
out the panel marked
FUSES to see the
fuse block.
Other fuses are located in underhood
electrical centers
on the right and left
sides
of the engine compartment.
I
A component center behind your glove
box has other electrical components,
including relays and circuit breakers. 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.
To identify and check fuses, refer to the
charts on the
following pages.
241

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Headlight Wiring
The headlight wiring is protected by a
circuit breaker in the component center.
An electrical overload will cause the
lights to
go on and off, or in some cases
to remain off. If this happens, have your
headlight system checked right away.
Windshield Wipers
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, have
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
I
until the problem is fixed.

Downloaded from www.Manualslib.com manuals search engine IMPORTANT I
KEEP ENGINE OIL
AT THE PIROPER
LEVEL AND CHANGE AS
RECOMMENDED
I
This part covers the maintenance
required for your Chevrolet
. Your
vehicle needs these services to retain
its safety. dependability and emission
control performance
.
Part 7
Maintenance Schedule
Have you purchased the GM
Protection Plan?
The Plan supplements your new
vehicle warranties
. See your
Chevrolet dealer for details
.
Section
Introduction
A Word About Maintenance ........................................................... 260
Your Vehicle and the Environment
................................................ 260
How This Part is Organized ........................................................... 261
Using Your Maintenance Schedules
.............................................. 262
Selecting the
Right Schedule .......................................................... 262
Schedule
I ........................................................................\
................ 264
Schedule
I1 ........................................................................\
.............. 266
Explanation
of Scheduled Maintenance Services .......................... 268
At Each Fuel Fill
........................................................................\
..... 271
At Least Once a Month
.................................................................. 271
At Least Twice a Year
..................................................................... 271
At Least Once a Year
...................................................................... 272
A . Scheduled Maintenance Services
B . Owner Checks & Services
C . Periodic Maintenance Inspections ....................................................... 274
D . Recommended Fluids & Lubricants .................................................... 275
E . Maintenance Record ........................................................................\
...... 278
259 . .

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Introduction
A Word About Maintenance
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 GM
vehicles, maintenance needs vary.
You may even need more
frequent checks and replacements than you
will find in the
schedules in this part.
So please read this part and note how
you drive. If you have any questions on how to keep your
vehicle in good condition, see your Chevrolet dealer, the
place many GM owners choose to have their maintenance
work done. Your dealer can be relied upon
to use proper
parts and practices.
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 or the removal of
important components can significantly affect the quality of
the air we breathe. Improper fluid levels or even the wrong
tire inflation can increase the level of emissions from your
vehicle.
To help protect our environment, and to help keep
your vehicle in good condition, please maintain your vehicle
properly.

Downloaded from www.Manualslib.com manuals search engine How This Parf is Organized
The remainder of this part is divided into five sections:
Section
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 center do
these jobs.
CAUTION
Performing maintenance work on a vehicle can be
b dangerous. In trying to do some jobs, you can be
senously 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 GM
publishes.
You will find a list of publications and how to get
them in this manual. See the
Index under Service
Publications.
Section B: Owner Checks & Services tells you what should
be checked whenever you stop for fuel. It also explains what
you can easily do to help keep your vehicle in good
condition.
Section C: Periodic Maintenance Inspections explains
important inspections that your Chevrolet dealer’s service
department or another qualified service center should
perform.
Section
D: Recommended Fluids & Lubricants lists some
products
GM recommends 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.
Section
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 section. 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.
26 I

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Section A: Scheduled Maintenance Services (cont.)
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule 11. The proper fluids and
lubricants to use are listed in Section
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.
ITEM
NO.
1
2
SERVICE
Engine Oil and Filter Change*-Always use SG
Energy Conserving I1 oils of proper viscosity. The
“SG” designation may be shown alone or in
combination with others, such as “SG/CC,”
“SG/CD” or “SF, SG, CC,” etc. To determine the
preferred viscosity for your vehicle’s engine
(e.g.,
SAE 5W-30 or SAE 1OW-30) see the Index under
Engine Oil.
Chassis Lubrication-Lubricate the transaxle shift
linkage, parking brake cable guides, underbody contact points and linkage. Lubricate the front and
rear suspension.
ITEM
NO. SERVICE
3 Throttle Body Mounting Bolt Torque (3.1L
Code T or W engine only)*-Check the torque of
the mounting bolts and/or nuts.
4 Tire and Wheel Rotation and Inspection-For
proper wear and maximum tire life, rotate your
tires following the instructions in this manual. See
the
Index under Tires, Inspection G Rotation.
Check the tires for uneven wear or damage. If you
see irregular or premature wear, check the wheel
alignment. Check for damaged wheels also.
NOTE: To determine your engine’s displacement and code, see the Index under Engine Identification.
* An Emission Control Service.
* The US. Environmental Protection Agency has determined that the failure \
to perform this maintenance item will not nullify the emission
warranty
or limit 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 in Section
E: Maintenance Record.
5 Engine Accessory Drive Belt Inspection
(California 3.1L Code T
or W engine*)-Inspect 1
the belt for cracks, fraying, wear and proper
tension. Replace as needed.