1993 GMC SIERRA service

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K2451
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3. With the engine off, open the water drain valve 2 to 3 turns.
4. Start the engine and allow it to idle for 1 to 2 minutes, or until clear fuel
is observed.
5. Stop the engine and close the water drain valve.
6. Install the fuel tank cap.
If the
WATER IN FUEL light comes on again after driving a short distance or
the engine runs rough or stalls-a large amount of water has probably been
pumped into the fuel tank. The fuel tank should be purged.
~ CAUTION I
A Diesel fuel containing water is still flammable. You could h~ burmi.
If you eve:r try to drain water from your fuel, kee,p sparks mes d.
. smoking materials away from the mixture.
If there is water in your diesel fuel and the weather is warm or humid,
fungus and bacteria can grow in the fuel. They can damage your fuel
system. You'll need a diesel fuel biocide
to sterilize your fuel system. Your
dealer can advise you
if you ever need this.
If your fuel tank needs to be purged to remove water, see your dealer or
a qualified service technician. Improper purging can damage your fuel
system.
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Service & Appearance Care
Running Out of Fuel (Diesel Engines)
If the engine stalls and you think that you’ve run out of fuel, do this:
6.5L Engine
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6.2L Engine
PO228
First, open the fuel filter air bleed valve or remove the scr\
ew. If there is air,
then
you are probably out of fuel.
To restart your engine:
1. If you’re parked on a level surface, add at least two gallons \
of fuel.
However,
if you’re parked on a slope, you may need to add up to five
gallons of fuel.
PO227
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Service & Appearance Cave
PO503
3. The filter is behind the air cleaner on the intake manifold. \
Unscrew and take
off the ring nut from the the top of the filter head. Lift the element
out of the filter head.
4. If there is any dirt on the element sealing surface of the filter head,
clean it
off.
...
t
PO212
5. Line up the widest key slot in the top of the new element with the
widest key on the filter head
and push the element in until the mating
surfaces touch.
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Service & Appearance Care
To remove the filter:
1. Turn off your engine and set your parking brake.
2. Take off the fuel tank cap. This releases pressure in the tank.
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K2669
3. The filter is behind the air cleaner on the intake manifold. Using a
4. If there is any dirt on the fuel port seal of the filter adapter, clean \
it off.
5. Snap the new filter into position with the bail wires.
screwdriver, separate both bail wires. Take out the filter.
K2671
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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.
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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.
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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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Service & Appearance Care
HOT
WEATHER LOOK FOR THIS
LABEL
SAE 5W-30
SAE 1OW-30
PREFERRED
above 0°F (-18°C)
IF NEITHER
SAE 5W-30 NOR SAE 1OW-30
GRADE
OILS ARE AVAILABLE, SAE 30
GRADE MAY BE USED AT TEMPERATURES
ABOVE
40 DEGREES F (4 DEGREES C).
DO NOT USE SAE 1OW-40, SAE 2OW-50 OR
ANY OTHER GRADE OIL NOT RECOMMENDED
PO347
SAE 1OW-30
Vehicles with Heavy Duty
Emissions (8501 GVWR or more).
As shown in this chart, SAE 1OW-30 is best for your vehicle. However,
you can use
SAE 5W-30 if it's going to be colder than 60°F (16°C)
before your next oil change. When it's very cold, below 0°F (-18"C), you
should use
SAE 5W-30.
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Service & Appearance Care
Engine Block Heater:
An engine block heater can be a big help if you have to park outside in very
cold weather,
0°F (-18°C) or colder. If your vehicle has this option, see
“Engine Block Heater” in the Index.
What to Do with Used Oil:
I CAUTION I
Used engine oil contains things that have caused skin cancer
laboratory animals. Don’t let used oil stay on your skin fo\
r very
I
Clean your skin and nails with soap and water, or a good han\
d
cleaner. Wash or properly throw away clothing or rags containin\
g
used engine oil.
Used-oil can be a real threat
to the environment. If you change your own oil,
be sure to drain all free-flowing oil from the filter before disp\
osal. Don’t ever
dispose of oil by putting it in the trash, pouring it on the ground, into sewers,
or into streams or bodies of water. Instead, recycle it by taking it to a place
that collects used
oil. If you have a problem properly disposing of your used
oil, ask your dealer, a service station or a local recycling \
center for help.
Engine Oil (Diesel Engines)
It’s a good idea to check your engine oil level 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.
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K2394
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.
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