oil GMC SIERRA 1993 User Guide

antifreeze at the coolant recovery tank. (See “Coolant” in the Index for more
information about the proper coolant mix.)
* Adding only plain water to your cooling system can be dangerous.
Plain water, or some other liquid like alcohol, can boil before the
proper coolant mix will. Your vehicle’s coolant warning system is
for the proper coolant mix. With plain water or the wrong mix, your
engine could get too hot but you wouldn’t get the overheat warning,
Your engine could catch fire and you or others could be burned.
USE
7 50/50 mix of clean water and a proper antifreeze.
I ln cold weather, water can freeze and crack the engine, radiator, heate\
r
:ore and other parts. Use the recommended coolant.
PO206
I * You can be burned if you spill coolant on hot engine parts. CoolQni
A contains ethylene glycol and it will burn if the engine parts are hut
enough. Don’t spill coolant on a hot engine.
When the coolant in the coolant recovery is at
or above COLD, start your
vehicle.
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I CAUTION
Sust or dirt on the wheel, or on the parts to which it is fastened,
could come
off and cause an accident. When you change a wheel,
remove any rust or dirt from the places where the wheel attac\
hes to
the vehicle. In an emergency, you can use a cloth or a paper towel
to
do this; but be sure to use a scraper or wire brush later- if vou
need to, to get all the rust or dirt
off.
A :an make the wheel nuts become loose after a time. The wheel
Remove any rust
or dirt from the wheel bolts, mounting surfaces or spare
wheel. Place the spare on the wheel mounting surface.
1 CAUTION I
Never use oil or grease on studs or nuts. If you do, the nuts migh
come loose. Your wheel could fall
off, causing a serious accident.
K2530
Replace the wheel nuts with the rounded end of the nuts toward the wheel.
Tighten each wheel nut by hand until the wheel is held against the hub.
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Service & Appearance 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 section devoted to its appearance care
.
Service ........................................................................\
........................................... 6-3
Fuel (Gasoline Engines)
........................................................................\
............... 6-4
Diesel Fuel Requirements and Fuel System
...................................................... 6-6
Checking Things Under the Hood
..................................................................... 6-17
Hood Release
........................................................................\
.......................... 6-18
Cleaning Your Diesel Engine
........................................................................\
.. 6-19
Noise Control System
........................................................................\
............. 6-19
Engine Oil (Except Diesel)
........................................................................\
..... 6.20
Engine Oil (Diesel Engines)
........................................................................\
... 6-26
Air Cleaner
........................................................................\
............................... 6-31
Automatic Transmission Fluid
........................................................................\
. 6-33
Manual Transmission Fluid
........................................................................\
..... 6-36
Hydraulic Clutch
........................................................................\
....................... 6-37
Transfer Case
........................................................................\
.......................... 6-39
Front Axle ........................................................................\
................................. 6-40
Rear Axle
........................................................................\
................................. 6-41
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Service & Appearance Care
Diesel Fuel Requirements
and Fuel System
Some states and provinces have restrictions on the purchase of diesel fuel
for light-duty vehicles and require you
to buy permits or pay special taxes.
Some of these restrictions apply only
to residents, and others apply to both
residents and visitors. These restrictions can change.
To learn the current
restrictions in any state or province, contact your auto club, \
the police or
other officials.
Fuel Requirements
1 NOTICE
Diesel fuel or fuel additives not recommended in this manual could
damage your fuel system and engine. Your warranty wouldn’t cover thi
damage. And:
Diesel fuel that has been mixed with engine oil could damage your
engine and emission controls.
Always check with your service station
his
diesel fuel, it can be difficult to restart your
engine. “Running Out of Fuel,” later
in this section, tells you how to
get
it started again. To avoid all this, try never to let. your tank get
What Fuel to Use:
You can use either Number I-D or Number 2-D diesel fuel, but you’ll get
better fuel economy using
2-D.
Diesel fuel may foam when you fill your tank. This can cause the automatic
pump nozzle
to shut off, even though your tank isn’t full. If this happens, just
wait for the foaming to stop and then continue to fill your tank.
1 CAUTION
- Heat coming from the engine may cause the fuel to expand and force
the fuel out of your tank. If something ignites the fuel, a \
fire could start
and people could be burned.
To help avoid this, fill your fuel tank only
until the automatic nozzle shuts
off. Don’t try to “top if off .” I
I
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Cold Weather Operation
In cold weather (below 20”F, or -7°C)’ use 1-D or “Winterized” Number 2-D
fuel (a blend of 1-D and 2-D). Be sure you get the right fuel. In very cold
temperatures (when it stays below
0°F or -18”C), use Number 1-D.
If you’re driving in very cold temperatures and can’t get\
Number 1-D or a
“winterized” Number 2-D, you can use one gallon of kerosene for every two
gallons of diesel fuel. Once you add the kerosene, run your engine for
several minutes
so the fuels will mix. Add kerosene only when the
temperature falls below
0°F (-18°C)’ because the fuel economy of kerosene
isn’t as good as that of diesel fuel.
NOTICE I
Never use home heatina oil o
I
1
In cold weather, your fuel filter may become clogged, especiall\
y if you use
Number 2-D diesel fuel that hasn’t been “winterized.” To unclog it, just warm the
filter to between 32°F and
50°F (0°C to 10°C). You won’t need to replace it.
Water in Fuel
Sometimes, water can be pumped into your fuel tank along with \
your diesel
fuel. This can happen
if a service station doesn’t regularly inspect and clean
its fuel tanks, or
if it gets contaminated fuel from its suppliers.
If this happens, a WATER IN FUEL light will come on. If it does, the excess
water must be drained. Your dealer can
do this for you.
AT€
PBOlO
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6. Close the water drain valve and connect a hose going from the air bleed\

valve port
to a fuel-resistant container. The inside diameter of the hose
should be one-eighth of an inch.
for the starter to cool.
Do this until you can see clear fuel coming from
the air bleed valve.
7. Turn your ignition key to Start for 10 to 15 seconds. Wait one minute
8. Close the air bleed valve and replace the fuel tank cap.
9. Start your engine and let it idle for five minutes. Be sure to check your
fuel filter for leaks.
Fuels in Foreign Countries (Gasoline Engines)
If you plan on driving in another country outside the US. or Canada,
unleaded fuel may be hard to find.
Do not use leaded gasoline. If you use
even one tank full, your emission controls won’t work well \
or at all. With
continuous use, spark plugs can get fouled, the exhaust system \
can corrode,
and your engine oil can deteriorate quickly. Your vehicle’s three-way catalytic
converter and oxygen sensor will be damaged.
All of that means costly
repairs that 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 of Canada Ltd.
International Export Sales
Post Office Box
828
Oshawa, Ontario L1H 7N1, Canada
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Service & Appearance Cam
i r:
PO21 7
If your vehicle has air conditioning, the auxiliary fan under the \
hood
can start up and injure you even when the engine is not runn\
ing.
Keep your hands, clothing and tools away from any underhood
electric fan,
if you have one.
Things that burn can get on hot engine parts and start
a fire. These
b include liquids like gasoline or diesel fuel, oil, coolant, bra\
ke 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.
Before closing the hood, be sure all the filler caps are
on properly. Then just
pull the hood down and close it firmly.
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Service & Appearance Care
Exhaust:
Removal of muffler andlor resonator.
Removal of exhaust pipes and exhaust pipe clamps.
Engine Oil (Except Diesel)
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.
t
L
K2389
Turn off the engine and give the oil a few minutes to get back down into the
oil pan.
If you don't, the oil dipstick might not show the actual level.
I
K2613
To Check 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 lower.
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When to Add Oil: If the oil is at or below the ADD mark, then you’ll need
to add some 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.
Don’t add too much
oil. If your engine has so much oil that the oil level
gets above the upper mark that shows the proper operating range, your
engine
could be damaged.
I
.I a.. ;
K2390
Just 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.
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K2543
What Kind of Oil to. Use:
L .ook for three things:
SG
SG must be on the. oil container, either by itself or combined with other\

quality designations, such as
SWCC, SWCD, SF,SG, CC, etc. These
letters show American Petroleum Institute
’ (API) levels. of quality.
@@qy$@
f you use oils that don’t have the “SG” designation, you can cause%@@$&
mgine damage not covered by your warranty. I I
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