check engine CHEVROLET BLAZER 1998 2.G Service Manual

Downloaded from www.Manualslib.com manuals search engine ’ CAUTION:
Make sure the tire and carrier are secure.
Driving with the tire or carrier unlatched could
injure pedestrians or damage the vehicle.
Compact Spare Tire (If Equipped)
Although the compact spare tire was fully inflated when
your vehicle was new, it can lose air after a time. Check
the inflation pressure regularly. It should be
60 psi
(420 kPa).
After installing the compact spare on your vehicle,
you should stop as soon as possible and make sure
your spare tire
is correctly inflated. The compact
spare
is made to perform well at speeds up to 65 mph
(105 Wh) for distances up to 3,000 miles (5 000 km),
so you can finish your trip and have your full-size tire
repaired or replaced where
you want. Of course, it’s besf
to replace your spare with a full-size tire as soon as you
can. Your spare will last longer and be in good shape in
case you need it again.
NOTICE:
When the compact spare is installed, don’t take
your vehicle through an automatic car wash with
guide rails. The compact spare can get caught on
the rails. That can damage
the tire and wheel,
and maybe other parts
of your vehicle.
Don’t use your compact spare on other vehicles.
And don’t mix your compact spare tire or wheel with
other wheels or tires. They won’t fit. Keep your spare
tire and its wheel together.
NOTICE:
Tire chains won’t fit your compact spare. Using
them can damage your vehicle and can damage
the chains too. Don’t use tire chains on your
compact spare.
5-34

Downloaded from www.Manualslib.com manuals search engine Section 6 Service and Appnara-- ~2 Care
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 part devoted to its appearance care.
6-2
6-3
6-5
6-5
6-7
6-8
6-10
6- 14
6-15
6-1 9
6-20
6-2
1
6-22 6-23
6-26 6-27
6-27
Service
Fuel
Fuels
in Foreign Countries
Filling Your Tank
Filling a Portable Fuel Container
Checking Things Under the Hood
Engine Oil
Air Cleaner
Automatic Transmission Fluid
Manual Transmission Fluid
Hydraulic Clutch
Rear Axle
Four-wheel Drive
Engine Coolant
Radiator Pressure Cap
Thermostat Power Steering Fluid 6-28
6-29
6-32
6-33
6-38
6-40
6-49
6-50
6-52
6-54
6-57
6-58
6-58
6-58
6-64 6-64
6-65 Windshield Washer Fluid
Brakes
Battery
Bulb Replacement
Windshield Wiper Blade Replacement
Tires
Appearance Care
Cleaning the Inside of Your Vehicle
Care
of Safety Belts
Cleaning the Outside
of Your Vehicle
Appearance Care Materials Chart
Vehicle Identification Number (VTN)
Service Parts Identification Label
Electrical System
Replacement Bulbs Capacities and Specifications
Air Conditioning Refrigerants

Downloaded from www.Manualslib.com manuals search engine /! CAUTION:
You can be injured and your vehicle could be
damaged if you
try to do service work on a
vehicle without knowing enough about it.
Be sure you have sufficient knowledge,
experience, 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 confused.
If you use
the wrong fasteners, parts can later break
or fall
off. You could be hurt.
Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airflow around it. This may cause wind noise
and affect windshield washer performance. Check with
your dealer before adding equipment to the outside of
your vehicle. Use regular unleaded
gasoline rated at
87 octane or
higher. At a minimum, it should meet specifications
ASTM D48 14 in
the United States and CGSB 3.5-M93
in Canada. Improved gasoline specifications have
been developed by the American Automobile
Manufacturers Association (AAMA) for better
vehicle performance and engine protection. Gasolines
meeting the AAMA specification could provide
improved driveability and emission control system
protection compared to other gasolines.
Be sure the posted octane
is at least 87. 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.
If you’re using fuel rated at
87 octane or higher and you
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.
6-3

Downloaded from www.Manualslib.com manuals search engine If your vehicle is certified to meet California Emission
Standards (indicated on the underhood emission control
label), it is designed to operate on fuels that
meet
California specifications. If such fuels are not available
in states adopting California emissions standards, your
vehicle will operate satisfactorily
on fuels meeting
federal specifications, but emission control
system
performance may be affected. The malfunction indicator
lamp on your instrument panel may turn on and/or your
vehicle may fail
a smog-check test. If this occurs, return
to your authorized GM dealer for diagnosis to determine
the cause of failure.
In the event it is determined that the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.
Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not his fuel
contains MMT. General Motors does not recommend the
use
of such gasolines. If fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance
may be affected. The
malfunction indicator lamp
on your instrument panel
may turn on. If this occurs, return to your authorized
GM dealer for service.
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent deposits from forming in your engine and fuel
system, allowing your emission control system to
function properly. Therefore, you should not have to
add anything to the fuel. In addition, gasolines
containing oxygenates, such as ethers and ethanol, and
reformulated gasolines may be available in your area
to
help clean the air. General Motors recommends that you
use these gasolines
if they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. 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 warranty.
6-4

Downloaded from www.Manualslib.com manuals search engine Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard to
find. Never use leaded gasoline or any other fuel not
recommended in the previous text on
fuel. Costly repairs
caused by use of improper fuel wouldn’t be covered by
your warranty.
To check on fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you’ll be driving.
You can also write us at the following address for
advice. Just tell us where you’re going and give your
Vehicle Identification Number (VIN).
General Motors Overseas Distribution Corporation
1908 Colonel Sam Drive
Oshawa, Ontario
L1H 8P7
Filling Your Tank
The fuel cap is behind a hinged door on the driver’s side
of your vehicle.
6-5

Downloaded from www.Manualslib.com manuals search engine Checking Things Under the Hood
' A CAUTION: I
Things that burn can get on hot engine parts and
start a fire. These include liquids like gasoline,
oil, coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber. You or others
could be burned. Be careful not to drop
or spill
things that will burn onto
a hot engine.
To open the hood, first pull
the handle inside the vehicle
on the lower driver's side
of
the instrument panel. Then
go to the front of the vehicle and release the
secondary
hood release.
Lift the hood, release the hood prop from its retainer and
put the hood prop into the slot in the hood.
You may
have a lamp that comes on when you lift the hood.

Downloaded from www.Manualslib.com manuals search engine Before closing the hood, be sure all the filler caps are on
properly. Then lift the hood to relieve pressure
on the
hood prop.
Remove the hood prop from the slot in the hood and
return the prop to
its retainer.
Then just pull the hood down firmly to close. It
will
latch when dropped from 10 to12 inches (25 to 30 cm)
without pressing
on the hood.
Engine Oil
It’s a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The oil dipstick is a
yellow ring.
Turn
off the engine and
give the oil
a few minutes
to drain back into the oil
pan.
If you don’t, the oil
dipstick might not show
the actual level.
6-10

Downloaded from www.Manualslib.com manuals search engine Checking Engine Oil
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
When to Add Engine Oil
If the oil is at or below the ADD line, then you’ll need
to add at least one quart of oil. But you must use the
right kind. This part explains what kind
of oil to use. For
crankcase capacity, see “Capacities and Specifications”
in the Index.
NOTICE:
Don’t add too much oil. If your engine has so
much oil that the’oil level gets above the
cross-hatched area that
shows the proper
operating range,
your engine could be damaged.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when
you’re through.
6-11

Downloaded from www.Manualslib.com manuals search engine Operating the engine with the air cleaner off can
cause you or others to be burned. The
air cleaner
not only cleans the air, it stops flame
if the engine
backfires.
If it isn’t there, and the engine
backfires, you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the air cleaner
off.
NOTICE:
If the air cleaner is off, a backfire can cause a
damaging engine fire. And, dirt can easily get
into your engine, which will damage it. Always
have the
air cleaner in place when you’re driving.
Automatic Transmission Fluid
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
Change both the fluid and filter every
15,000 miles
(25 000 km) if the vehicle is mainly driven under one
or more of these conditions:
0 In heavy city traffic where the outside temperature
0 In hilly or mountainous terrain.
0 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).
See “Scheduled Maintenance Services” in the Index.
regularly
reaches
90°F (32” C) or higher.
6-15

Downloaded from www.Manualslib.com manuals search engine How to Check
Because this operation can be a little difficult, you
may choose to have this done at your GM dealership
Service Department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
NOTICE:
~ Too much or too little fluid can damage your
transmission.
Too much can mean that some of
the fluid could come out and fall on hot engine
parts
or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
Wait at least 30 minutes before checking the
transmission fluid level
if you have been driving:
When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic -- especially in hot weather.
0 While pulling a trailer.
To get the right reading, the fluid should be at
normal operating temperature, which is
180°F to 200°F
(82” C to 93 “C). See “Checking Transmission Fluid
Hot”
in the Index.
6-16