2006 CHEVROLET DURAMAX water pump

It is acceptable to use diesel fuel containing up to 5%
biodiesel (B5), but the final blended fuel must meet the
same specification, CAN/CGSB-3.517 (Low Sulfur
Diesel) in Canada, as other fuels used in your vehicle,
and the biodiesel used for making this fuel must meet the
latest version of ASTM specification D 6751. Biodiesel is
produced from vegetable oils or animal fat that have been
chemically modified to reduce the possibility of damage
to your fuel system and engine. Higher concentration
(i.e., greater than B5) biodiesel-containing fuels or the
use of unmodified bio-oils blended into diesel fuel at any
concentration is not recommended and could damage
your fuel system and engine. Such damage would not be
covered by your warranty. If there are questions about
the biodiesel-containing fuels you are using, contact your
fuel supplier.
Very Cold Weather Operation
Follow the instructions listed previously under the
heading “What Fuel to Use.”
Notice:Never use home heating oil or gasoline in
your diesel engine. They can cause engine damage.
In cold weather, your fuel filter may become clogged
(waxed). To unclog it, move the vehicle to a warm garage
area and warm the filter to between 32°F and 50°F
(0°C to 10°C). You will not need to replace it. Additional
information on the fuel filter follows.
Water in Fuel
{CAUTION:
Diesel fuel containing water is still ammable.
You could be burned. If you ever try to drain
water from your fuel, keep sparks, ames and
smoking materials away from the mixture.
Notice: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
and fuel operated heater (FOH) (if equipped). A diesel
fuel biocide can be used to sterilize your fuel system.
However, your fuel system may still need to be
cleaned. Your dealer can advise you of the
appropriate solution.
If your fuel tank needs to be purged to remove
water, see your dealer or a qualied technician.
Improper purging can damage your fuel system
and block your FOH.
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.
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Water In Fuel Light/Message Chart
(cont’d)
Problem Recommended Action
•Immediately after
refueling, large
amount of water
possibly pumped
into fuel tank.Fuel tank purging
required. See your
dealer for assistance.
Notice:If you drive when this warning indicator is
on, you can damage your fuel injection system and
your engine. If the indicator comes on right after you
refuel, it means water was pumped into your fuel
tank. Turn off your engine immediately. Then, have
the water drained at once.
Hard starting, hesitation or flat performance at high speed
or during hard acceleration may be an indication of
premature fuel filter plugging due to dirty or contaminated
fuel. The filter element may need to be changed if this
happens. SeeFuel Filter Replacement on page 5-12.To drain water, do the following:
1. Stop and park the vehicle in a safe place.
Turn off the engine and apply the parking brake.
2. Remove the fuel cap.
3. Place a fuel-resistant container under the fuel
filter(s). For pickup models, the filter drain valve
is located in the engine compartment, on the
passenger’s side of the vehicle, on the bottom of the
fuel filter. For van models, the filter drain valves for
the primary and secondary fuel filters are located in
the chassis (inside frame rail) compartment. They
are on the driver’s side of the vehicle, below the
fuel filters.
4. For pickup models,
open the drain valve
by turning it two to
three turns. When fuel
empties from the valve,
all the water has been
drained. Close the
valve hand tight. To
help remove all the
water, press the priming
pump several times.
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5. For van models, in order to drain the water from the
system, you will have to repeat the operation for the
primary and secondary fuel filters.6. Remove the fuel-resistant container and properly
dispose of the contaminated fuel. To find out how
to properly dispose of contaminated diesel fuel,
see “What to Do With Used Oil” underEngine Oil
on page 5-21.
7. Install the fuel cap.
8. For pickup models, start the engine and let it run for a
few minutes. If the engine stalls, the fuel system may
need to be primed. While draining the water from the
fuel filter, air may enter the fuel system. If air has
entered the fuel system the fuel system will need to
be primed. For van models, start the engine and let it
run for a few minutes.
If the WATER IN FUEL message/warning 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.
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Fuel Priming
In order for the fuel system to work properly, the fuel lines
must be full of fuel and contain no air. If air gets into the
fuel lines, it will be necessary to prime the fuel lines, to
eliminate air before operating the vehicle.
Q:How does air get into the fuel lines?
A:One of the following may have happened:
•The vehicle ran out of fuel
•The fuel filter was removed for servicing or
replacement
•The fuel lines were removed or disconnected for
servicing
•The fuel filter water drain valve was opened while
the engine was running
If one or more of the above occur, it is very likely that
air has entered your fuel system and that you will need
to prime the fuel system before operating the vehicle.
Air in the fuel lines will not harm the engine or the
vehicle.However, the engine may not be able to start until the
fuel system is primed and the air is removed.
Q:How do I prime the vehicle? (Pickup Models)
A:Your vehicle is equipped with a priming pump which
is part of the engine mounted fuel filter. The priming
pump is hand operated (pickup only) and is designed
to bring fuel to the engine to eliminate any air that
may be in the fuel lines. To prime the engine, do the
following:
1. You must correct the condition which caused the loss
of prime by making sure there is fuel in the tank.
2. Make sure the fuel filter has been installed and
properly tightened.
3. Make sure the fuel lines are properly connected
and the fuel filter is cool enough to touch.
4. Remove any dirt from the fuel filter head and vent
valve by wiping with a cloth.
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The coolant level should
be at or above the FULL
COLD mark. If it isn’t, you
may have a leak at the
pressure cap or in the
radiator hoses, heater
hoses, radiator, water
pump or somewhere
else in the cooling system.
{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them. If
you do, you can be burned.
Do not run the engine if there is a leak. If you
run the engine, it could lose all coolant. That
could cause an engine re, and you could be
burned. Get any leak xed before you drive
the vehicle.If there seems to be no leak, start the engine again. If
your vehicle is equipped with an engine driven cooling
fan, the engine cooling fan speed should increase when
idle speed is doubled by pushing the accelerator pedal
down. If it doesn’t, your vehicle needs service. Turn off
the engine.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
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Van Models
When you decide it is safe to lift the hood, here is what
you will see:
A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine Cooling Fan
If the coolant inside the coolant surge tank is boiling,
do not do anything else until it cools down.When the engine is cold,
the coolant level should
be at or above the
COLD FILL mark.
If it is not, you may have a leak at the pressure cap or in
the radiator hoses, heater hoses, radiator, water pump,
fuel operated heater (FOH) or somewhere else in the
cooling system.
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