2006 CHEVROLET DURAMAX check engine

Features and Controls..................................... 2-1
Starting and Operating Your Vehicle ............. 2-2
Instrument Panel ............................................. 3-1
Warning Lights, Gages and Indicators ........... 3-2
Driving Your Vehicle ....................................... 4-1
Towing ..................................................... 4-2 Service and Appearance Care
.......................... 5-1
Diesel Fuel Requirements and Fuel System ..... 5-2
Checking Things Under the Hood ...............5-18
Capacities and Specifications .....................5-50
Maintenance Schedule ..................................... 6-1
Maintenance Schedule ................................ 6-2
2006 DURAMAX®Diesel EngineM
Index ......................................................................... 1
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When your engine is cold, let it run for a few minutes
before you move your vehicle. This lets oil pressure
build up. Your engine will sound louder when it’s cold.
Notice:If you are not in an idling vehicle and the
engine overheats, you would not be there to see the
overheated engine indication. This could damage
your vehicle. Do not let your engine run when you are
not in your vehicle.
Cold Weather Starting (Diesel Engine)
The following tips will help you get good starting in
cold weather.
Use the recommended engine oil when the outside
temperature drops below freezing. SeeEngine Oil on
page 5-21. When the outside temperature drops below
0° F (–18°C), use of the engine coolant heater is
recommended.
If you experience longer cranking times, notice an
unusual amount of exhaust smoke or are at higher
altitudes (over 7,000 ft. or 2 135 m), you may use your
engine coolant heater. SeeEngine Coolant Heater
on page 2-8.
SeeDiesel Fuel Requirements and Fuel System on
page 5-2for information on what fuel to use in cold
weather.
If Your Diesel Engine Won’t Start
If you’ve run out of fuel, look atRunning Out of Fuel
on page 5-11. SeeDiesel Fuel Requirements and Fuel
System on page 5-2.
If you’re not out of fuel, and your engine won’t start,
do this:
Turn your ignition key to RUN. Immediately after the wait
to start light goes off, turn the ignition key to START.
If the light doesn’t go off, wait a few seconds, then try
starting your engine again. See your dealer as soon
as you can for a starting system check.
If the light comes on and then goes off and you know your
batteries are charged, but your engine still won’t start,
your vehicle needs service.
If the light does not come on when the engine is cold,
your vehicle needs service.
If your batteries don’t have enough charge to start your
engine, see “Battery” in the owner’s manual Index.
Be sure you have the right oil for your engine, and that
you’ve changed the oil at the proper times. If you use
the wrong oil, your engine may be harder to start.
2-3
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Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a computer which monitors operation
of the fuel, timing, and emission control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner environment.The check engine light comes on to indicate when service
is required. Malfunctions often will be indicated by the
system before any problem is apparent. This may prevent
more serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls may not
work as well, your fuel economy may not be as good,
and your engine may not run as smoothly. This could
lead to costly repairs that may not be covered by
your warranty.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system of
your vehicle or the replacement of the original tires
with other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test. Pickup Models
Van Models
3-4
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If the Light Comes On
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If it does not, have it repaired. This light will also
come on if an emission control system malfunction has
been detected on your vehicle. Diagnosis and service
may be required.
You also may be able to correct the emission system
malfunction by considering the following:
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line. The system can detect
this. Adding fuel should correct this condition. It will take
a few driving trips to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has the
proper test equipment and diagnostic tools to fix any
mechanical or electrical problems that may have
developed.
Emissions Inspection and
Maintenance Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this inspection
could prevent you from getting a vehicle registration.
Here are some things you need to know in order to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the check
engine light is on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen if
you have recently replaced your battery or if your battery
has run down. The diagnostic system is designed to
evaluate critical emission control systems during normal
driving. This may take several days of routine driving. If
you have done this and your vehicle still does not pass
the inspection for lack of OBD system readiness, your
GM dealer can prepare the vehicle for inspection.
3-5
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Oil Pressure GageThe oil pressure gage shows the engine oil pressure in
psi (pounds per square inch) when the engine is running.
Canadian vehicles indicate pressure in kPa (kilopascals).
Oil pressure may vary under different driving conditions
and oil types. The DURAMAX
®engine may generate
oil pressure in excess of 80 psi (548 kPa) under certain
conditions, especially in cold temperatures. This is a
normal operating range.
{CAUTION:
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be covered
by your warranty. Always follow the maintenance
schedule in this manual for changing engine oil. United States
(Pickup Models)Canada
(Pickup Models)
United States
(Van Models)Canada
(Van Models)
3-6
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Diesel Fuel Requirements and Fuel System.......5-2
Diesel Engine Fuel.........................................5-2
What Fuel to Use...........................................5-3
Very Cold Weather Operation...........................5-5
Water in Fuel.................................................5-5
Water in Fuel Light Chart................................5-6
Running Out of Fuel.....................................5-11
Fuel Filter Replacement.................................5-12
Filling the Tank............................................5-15
Filling a Portable Fuel Container.....................5-17Checking Things Under the Hood....................5-18
Engine Compartment Overview.......................5-18
Engine Oil...................................................5-21
Engine Oil Life System..................................5-24
Engine Air Cleaner/Filter................................5-25
Automatic Transmission Fluid.........................5-29
Engine Coolant.............................................5-34
Radiator Pressure Cap..................................5-39
Coolant Surge Tank Pressure Cap..................5-39
Engine Overheating.......................................5-39
Cooling System............................................5-41
Capacities and Specications..........................5-50
Specification Charts......................................5-50
Section 5 Service and Appearance Care
5-1
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5. Open the fuel filter vent
valve by turning the
screw counterclockwise
several full turns. The
vent valve is located
on top of the fuel filter
housing.
6. Repeatedly push down
on the fuel filter priming
pump with the palm of
your hand. The pump
is located on top of the
fuel filter housing. Let
the pump return upward
between pushes.7. Operate the priming pump until a small amount of
fuel seeps from the vent valve. When you see the
fuel, the filter is now full of fuel and the system
should be primed.
8. Close the vent valve. Clean any fuel which
accumulated on the fuel filter. Start the engine and
let idle for a few minutes. Check the filter for leaks.
Q:How do I prime the vehicle? (Van Models)
A:Your vehicle is equipped with an electric priming
pump which is located in front of the fuel tank
under your vehicle. The priming pump is operated
electrically 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. Turn the ignition key on for two minutes. The fuel
pump will be operating and starting the priming
process. Do not start the engine during the first
two minutes.
2. After completing the initial prime in Step 1, turn the
ignition off, then back to start and crank the engine
for 15 seconds.
3. If the engine does not start, repeat Steps 1 and 2
until the engine starts.
5-10
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4. If the engine does not run after repeating Steps 1
and 2 three times, turn the ignition key off for
60 seconds, allowing the Electronic Control
Module (ECM) to reset.
5. Repeat the above steps until the engine starts.
6. If the engine runs, but does not run smoothly,
increase the engine speed slightly by pressing
the accelerator pedal. This will help to force
out air through the system.
7. If the engine starts and runs but stalls again, turn the
ignition key off for 60 seconds to reset the ECM and
repeat the steps above.
8. When the engine starts, let it idle for a few minutes
and check the filters for any leaks.Running Out of Fuel
Pickup Models
If the engine stalls and you think that you have run out
of fuel, do this to restart your engine:
{CAUTION:
Diesel fuel is ammable. It could start a re if it
gets on hot engine parts. You could be burned.
Do not let too much fuel ow from the air bleed
valve, and wipe up any spilled fuel with a cloth.
1. If you are parked on a level surface, add at least
two gallons of fuel. However, if you are parked on a
slope, you may need to add up to five gallons of fuel.
2. Follow the fuel priming procedure earlier in this
section to prime the fuel filter.
3. Close the air bleed valve.
4. Turn the ignition key to START for 10 to 15 seconds
at a time until your engine starts. If the engine tries to
run, but does not run smoothly, increase the rpm a
little using the accelerator pedal. This will help force
air through the system.
5-11
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