2003 CHEVROLET TAHOE fuel

Notice:Modi®cations 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.
Modi®cations 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.
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 the light does not come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
·Light FlashingÐ A mis®re condition has been
detected. A mis®re increases vehicle emissions
and may damage the emission control system on
your vehicle. Diagnosis and service may be
required.
·Light On SteadyÐ An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
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 ªIf
the Light Is On Steadyº 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 ªIf
the Light Is On Steadyº following. If the light is still
¯ashing, follow the previous steps, and see your dealer
for service as soon as possible.
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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. See
Filling Your Tank on page 5-9. The
diagnostic system can determine if the fuel cap has
been 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, mis®ring, 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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Tow/Haul Mode Light
This light is displayed
when the tow/haul mode
has been activated.
For more information, see
Towing a Trailer on
page 4-65.
Fuel Gage
The fuel gage, when the ignition is on, 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 FUEL LEVEL LOW
message will appear. See
Driver Information Center
(DIC) on page 3-53.
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.
Low Fuel Warning Light
The light next to the fuel gage will come on brie¯y 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. See
Fuel on
page 5-4.
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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C (Personalization):This button will change personal
options available on your vehicle.
D (Select):This button resets certain functions and
turns off or acknowledges messages on the DIC.
If your vehicle is not equipped with the DIC steering
wheel buttons you will not have all of the features listed
above, and you will turn off, or acknowledge DIC
messages by using the trip odometer reset stem located
on the instrument panel cluster.
DIC Operation and Displays
The DIC comes on when the ignition is on. After a short
delay the DIC will display the current driver and the
information that was last displayed before the engine
was turned off.
If a problem is detected, a warning message will appear
on the display. Pressing any of the DIC buttons will
acknowledge any current warning or service messages.The DIC has different modes which can be accessed by
pressing the four buttons on the DIC. These buttons
are trip information, fuel information, personalization and
select. The button functions are detailed in the
following.
If your vehicle is not equipped with the DIC steering
wheel buttons not all of the features listed will be
available on your vehicle.
Trip Information Button
Use the trip information button to scroll through the
ODOMETER, PERSONAL TRIP ON/OFF, BUSINESS
TRIP ON/OFF, HOURMETER, ANNUAL LOG and
TIMER. If the personal trip and/or the business trip are
set to ON, you will also be able to scroll through
more messages. See
Personal TripandBusiness Tripnext for more information.
If your vehicle is not equipped with the DIC steering
wheel buttons you can select the trip information
by pressing the trip odometer reset stem on the
instrument panel cluster.
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Personal Trip
If the PERSONAL TRIP is on (turn it on or off by
pressing the select button) you will also be able to scroll
through the following:
·PERSONAL: XX MI Ð This shows the current
distance traveled since the last reset for the
personal trip odometer in either miles or kilometers.
·PERSONAL: XX.X GAL Ð This shows the amount
of fuel used for the personal trip.
·PERSONAL: XX.X MPG Ð This shows the amount
of fuel used for the personal trip.
·PERSONAL: AVG MPH Ð This shows the vehicle's
average speed for the personal trip.
·PERSONAL: % ANNUAL Ð This shows the ratio of
personal trip miles to annual miles as a percent.
You can reset the personal trip odometer by pressing
and holding the trip odometer reset stem.
Business Trip
If the BUSINESS TRIP is on (turn it on or off by
pressing the select button) you will also be able to scroll
through the following:
·BUSINESS: XX MI Ð This shows the current
distance traveled since the last reset for the
business trip odometer in either miles or kilometers.
·BUSINESS: XX.X MPG Ð This shows the amount
of fuel used for the business trip.
·BUSINESS: XX.X GAL Ð This shows the amount
of fuel used for the business trip.
·BUSINESS: AVG MPH Ð This shows the vehicle's
average speed for the business trip.
·BUSINESS: % ANNUAL Ð This shows the ratio of
business trip miles to annual miles as a percent.
To reset the personal or business trip information, do
the following: press and hold select button for two
seconds while in one of the personal or business trip
modes. This will reset all of the information for the
personal or business trip, or if your vehicle does not
have the DIC steering wheel control buttons, press the
reset stem on the instrument panel cluster.
You can also reset the PERSONAL: XX MI, or
BUSINESS: XX MI, while they are displayed by pressing
the reset stem on the cluster. If you press and hold
the reset stem or select button for four seconds,
the display will show the distance traveled since the last
ignition cycle for the personal or business trip.
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Fuel Information Button
Use the fuel information button to scroll through the
range, average fuel economy, instant fuel economy and
the GM Oil Life SystemŸ.
If your vehicle is not equipped with the DIC steering
wheel control buttons you will not be able to display the
fuel information.
Fuel Range
Press the fuel information button until RANGE appears
to display the remaining distance you can drive
without refueling. It's based on fuel economy and the
fuel remaining in the tank. The display will show LOW if
the fuel level is low.
The fuel economy data used to determine fuel range is
an average of recent driving conditions. As your
driving conditions change, this data is gradually updated.
Fuel range cannot be reset.
Average Fuel Economy
Press the fuel information button until AVG appears in
the display. Average fuel economy is how many
miles per gallon your vehicle is getting based on current
and past driving conditions.Press and hold the select button while AVG.ECON is
displayed to reset the average fuel economy. Average
fuel economy will then be calculated starting from
that point. If the average fuel economy is not reset, it
will be continually updated each time you drive.
Instant Fuel Economy
Press the fuel information button until INST appears in
the display. Instant fuel economy is how many miles
per gallon your vehicle is at the particular moment
in time. The instant fuel economy cannot be reset.
GM Oil Life SystemŸ
Press the fuel information button until ENGINE OIL LIFE
appears in the display. The GM Oil Life SystemŸ
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 and oil change.
To reset the Oil Life System press and hold the select
button 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.
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Easy Exit Seat
Press the personalization button until EASY EXIT SEAT
appears in the display. To select your personalization
for seat position exit, press the select button while EASY
EXIT SEAT is displayed on the DIC. Pressing the
select button will scroll through the following choices:
SEAT POSITION EXIT OFF (default):The driver's seat
will move to the exit position when the exit button on
the driver's door panel is pressed.
SEAT POSITION EXIT ON:The driver's seat will move
to the exit position when the key is removed from the
ignition.
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. For
more information on the seat position exit see
Memory
Seat on page 2-66.
Display Units (ENG/MET)
Press the personalization button until DISPLAY UNITS
appears in the display. To select English or metric,
press the select button while DISPLAY UNITS is
displayed on the DIC. Pressing the select button will
scroll through the following choices:
·UNITS: ENGLISH
·UNITS: METRIC
If you choose English, all information will be displayed
in English units. For example, distance in miles and fuel
economy in miles per gallon.
Choose one of the two options and press the
personalization button while it is displayed on the DIC
to select it and end out of the personalization options.
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