2004 CHEVROLET SILVERADO light

If the Light is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed
Avoiding hard accelerations
Avoiding steep uphill grades
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible
If the light stops ashing and remains on steady, see “If
the Light Is On Steady” following.
If the light continues to ash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart
the engine. If the light remains on steady, see “If
the Light Is On Steady” following. If the light is still
ashing, follow the previous steps, and see your dealer
for service as soon as possible.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. SeeFilling Your Tank on page 5-9. The
diagnostic system can determine if the fuel cap hasbeen left off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.
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.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, misring, hesitation
on acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel 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
x any mechanical or electrical problems that may
have developed.
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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 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.
Oil Pressure Gage
The 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 with engine speed, outside
temperature and oil viscosity, but readings above the
low pressure zone indicate the normal operating range.United States
Canada
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A reading in the low pressure zone may be caused by a
dangerously low oil level or some other problem
causing low oil pressure. Check your oil as soon as
possible. SeeOil Pressure LowunderDIC Warnings
and Messages on page 3-64andEngine Oil on
page 5-20.
{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.
Cruise Control Light
The cruise light comes on
whenever you set your
cruise control. See “Cruise
Control” underTurn
Signal/Multifunction Lever
on page 3-7.
Four-Wheel-Drive Light
The four-wheel drive
indicator will light up when
you shift a manual
transfer case into
four-wheel drive and the
front axle engages.
Some delay between shifting and the indicator’s
lighting is normal.
SeeFour-Wheel Drive on page 2-36for
more information.
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Tow/Haul Mode Light
This light is displayed
when the Tow/Haul mode
has been activated.
For more information, seeTowing a Trailer on
page 4-70.
Overdrive Disable
This light will illuminate
when the overdrive disable
feature is activated. The
overdrive disable
feature will prevent your
vehicle from shifting
into fth (5) gear.
Fuel Gage
When the ignition is on, the fuel gage tells you about
how much fuel you have left in your tank.
The gage will rst indicate empty before you are
out of fuel, and you should get more fuel as soon
as possible.
When the fuel tank is low the Low Fuel message will
appear. SeeDIC Warnings and Messages on page 3-64
for more information.
United StatesCanada
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Here are some situations you may experience with your
fuel gage. None of these indicate a problem with the
fuel gage.
At the gas station, the fuel pump shuts off before
the gage reads full.
It takes a little more or less fuel to ll up than the
fuel gage indicated. For example, the gage may
have indicated the tank was half full, but it actually
took a little more or less than half the tank’s
capacity to ll the tank.
The gage goes back to empty when you turn off
the ignition.
If you have a diesel engine, see “Fuel Gage” in the
Diesel Engine Supplement.
Low Fuel Warning Light
The light next to the fuel gage will come on briey when
you are starting the engine.
This light comes on when the fuel tank is low on fuel.
To turn it off, add fuel to the fuel tank. SeeFuel on
page 5-5.
Driver Information Center (DIC)
The DIC display is located on the instrument panel
cluster above the steering wheel. The DIC can display
information such as the trip odometer, fuel economy and
personalization features.
A (Trip Information):This button will display the
odometer, personal trip odometer, business trip
odometer, hourmeter, annual log and the timer.
B (Fuel Information):This button will display the
current range, average fuel economy, instant fuel
economy and engine oil life.
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Instant Fuel Economy
Press the fuel information button until INST ECON
appears in the display. Instant fuel economy is how
many miles per gallon your vehicle is getting at
the particular moment in time. The instant fuel economy
cannot be reset.
GM Oil Life System
Press the fuel information button until ENGINE OIL LIFE
appears in the display. The GM Oil Life System shows
an estimate of the oil’s remaining useful life. It will show
100% when the system is reset after an oil change. It
will alert you to change your oil on a schedule consistent
with your driving conditions.
Always reset the engine oil life after an oil change. To
reset the Oil Life System use the fuel button to reach the
ENGINE OIL LIFE screen and then press and hold
the select button for ve seconds while ENGINE OIL
LIFE is displayed. OIL LIFE RESET will appear on
the display for 10 seconds to let you know the system
is reset.
The DIC does not replace the need to maintain your
vehicle as recommended in the Maintenance Schedule
in this manual. SeeEngine Oil on page 5-20.
Personalization Button
You can program certain features to a preferred setting
for up to two people. Press the personalization button
to scroll through the following personalization features.
All of the personalization options may not be available
on your vehicle. Only the options available will be
displayed on your DIC.
If your vehicle is not equipped with the DIC steering
wheel buttons you will not have any of the following
personalization options except for DISPLAY
LANGUAGE. See DISPLAY LANGUAGE later in this
section for more information.
AUTOMATIC LOCKING
AUTOMATIC UNLOCKING
DELAYED LOCKING
REMOTE LOCK FEEDBACK
ALARM WARNING TYPE
REMOTE UNLOCK FEEDBACK
HEADLAMPS ON AT EXIT
PERIMETER LIGHTING
SEAT POSITION RECALL
EASY EXIT DRIVER SEAT
CURB VIEW ASSIST
DISPLAY LANGUAGE
DISPLAY UNITS (ENG/MET)
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Seat Position Recall
Press the personalization button until SEAT POSITION
RECALL appears in the display. To select your
personalization for seat position recall, press the select
button while SEAT POSITION RECALL is displayed
on the DIC. Pressing the select button will scroll through
the following choices:
SEAT POSITION RECALL OFF (default):The memory
seat position you saved will only be recalled when the
memory button 1 or 2 is pressed.
SEAT POSITION RECALL AT KEY IN:The memory
seat position you saved will be recalled when you
put the key in the ignition.
SEAT POSITION RECALL ON REMOTE:The
memory seat position you saved will be recalled
when you unlock the vehicle with the remote keyless
entry transmitter.
Choose one of the three options and press the
personalization button while it is displayed on the DIC to
select it and move on to the next feature. For more
information on seat position recall seeMemory Seat on
page 2-70.
Perimeter Lighting
Press the personalization button until PERIMETER
LIGHTING appears in the display. To select your
personalization for perimeter lighting, press the select
button while PERIMETER LIGHTING is displayed on the
DIC. Pressing the select button will scroll through the
following choices:
PERIMETER LIGHTING ON (default):The headlamps
and back-up lamps will come on for 40 seconds, if it
is dark enough outside, when you unlock the vehicle
with the remote keyless entry transmitter.
PERIMETER LIGHTING OFF:The perimeter lights will
not come on when you unlock the vehicle with the
remote keyless entry transmitter.
Choose one of the two options and press the
personalization button while it is displayed on the
DIC to select it and move on to the next feature.
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If you accidentally choose a language that you don’t
want or understand, press and hold the personalization
button and the trip information button at the same
time. The DIC will begin scrolling through the languages
in their particular language. English will be in English,
French will be in French and so on. When you see
the language that you would like, release both buttons.
The DIC will then display the information in the
language you chose.
You can also scroll through the different languages by
pressing and holding the trip reset stem for four
seconds, as long as you are in the odometer mode.
Select Button
The select button is used to reset certain functions and
turn off or acknowledge messages on the DIC display.
The select button also toggles through the options
available in each personalization menu. For example,
this button will reset the trip odometers, turn off the
FUEL LEVEL LOW message, and toggle through the
languages you can select the DIC to display
information in.
DIC Warnings and Messages
Warning messages are displayed on the DIC to notify
the driver that the status of the vehicle has changed and
that some action may be needed by the driver to
correct the condition. If there is more than one message
that needs to be displayed they will appear one after
another. Some messages may not require immediate
action but you should press the select button, or
the reset stem, to acknowledge that you received the
message and clear it from the display. Some messages
cannot be cleared from the display because they are
more urgent. These messages require action before they
can be removed from the DIC display. The following
are the possible messages that can be displayed
and some information about them.
BATTERY NOT CHARGING
If the battery is not charging during operation, this
message will appear on the DIC. Driving with this
problem could drain your battery. Have the electrical
system checked as soon as possible. Press the select
button to acknowledge the message and clear it
from the DIC display. SeeBattery Warning Light on
page 3-42.
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