GMC YUKON DENALI 2003 Owners Manual
Manufacturer: GMC, Model Year: 2003, Model line: YUKON DENALI, Model: GMC YUKON DENALI 2003Pages: 447, PDF Size: 21.97 MB
Page 181 of 447

A temporary solution to hotter transmission operating
temperatures may be
to let the transmission cool down.
If the transmission is operated at higher temperatures
on a frequent basis, see
Scheduled Maintenance
on page
6-5 for the proper transmission maintenance
intervals.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with
a computer which
monitors operation of the
fuel, ignition 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 that there is a problem and 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 a while, 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: Modifications 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.
Modifications 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 doesn’t come on, have it
repaired. This light will also come on during
a
malfunction in one of two ways:
Light Flashing - A misfire condition has been
detected.
A misfire increases vehicle emissions
and may damage the emission control system on
your vehicle. Dealer or qualified service center
diagnosis and service may be required.
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Light On Steady - An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center 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 flashing and remains on steady, see “If
the Light
Is On Steady” following.
If the light continues to flash, 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
flashing, follow the previous steps, and drive the vehicle
to your dealer or qualified service center for service.
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 5-7. 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, misfiring, 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.
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If none of the above steps have made the light turn off,
have your dealer or qualified service center check
the vehicle. Your dealer has the proper test equipment
and diagnostic
tools to fix any mechanical or electrical
problems that may have developed.
€missions 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, see your dealer or qualified service
center to prepare the vehicle for inspection.
Oil Pressure Gage
_I
United States Canada
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.
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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. See
Engine Oil on page 5-13.
DL.. t kc-> dl - - jng if -..3 oil pressure is IOL- If
you do, your engine can become
so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice: Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
Security Light
1 This light will come on
I'
brieflywhen you turn the
key toward START.
The light will stay on until
the engine starts.
If the light flashes, the Passlock@ system has entered a
tamper mode. If the vehicle fails
to start, see Passlock@
on page
2- 17.
If the iight comes on continuously while driving and
stays on, there may be a problem with the Passlock@
system. Your vehicle will not be protected by Passlock@,
and you should see your dealer.
Also, see Content Theft-Deterrent on page 2- 16 for
additional information regarding the security light.
Cruise Control Light
The cruise light comes on
whenever you
set your
cruise control. See Cruise
Control under Turn
SignaVMultifunction Lever
on page 3-7.
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Tow/HauI Mode Light
I
This light is displayed
when the tow/haul mode
has been activated.
For more information, see "Tow/Haul Mode" under
Towing a Trailer on page 4-47.
Fuel Gage
United States
Canada
When the ignition is on, the fuel gage tells you about
how much fuel you have left in your tank.
The gage will first indicate empty before you are out of
fuel, and you should get more fuel as
soon as
possible.
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 fill 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
fill 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 briefly 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 5-5.
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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.
C (Personalization): This button will change personal
options available on your vehicle.
D (Select): This button resets certain functions and
turns off
or acknowledges nessages on the DIC.
DIC Operation and Displays
The DIC comes on when the ignition is on. After a short
delay the DIC will display the current driver
(1 or 2)
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 four buttons will
acknowledge (clear) most current warnings or service
messages. Some warnings that cannot be
acknowledged (cleared) are: ENGINE OVERHEATED,
OIL PRESSURE LOW, REDUCED ENGINE POWER,
TRANS HOT IDLE ENGINE. These warnings must
be dealt with immediately and therefore cannot
be cleared until the problem has been corrected.
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.
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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.
Trip Information Button
Use the trip information button to scroll through the
SEASON 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 Trip and
Business Trip next for more information.
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:
e PERSONAL: XX MI - This shows the current
distance traveled since the last reset for the
personal trip odometer in either miles or kilometers.
PERSONAL: XX.X MPG - This shows the amount
of fuel used for the personal trip.
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PERSONAL: AVG ECONOMY - This shows how
many miles per gallon of fuel your vehicle
is
getting for the personal trip based on current and
past driving conditions.
PERSONAL: AVG MPH - This shows the vehicle’s
average speed for the personal trip.
PERSONAL: % ANNUAL - This shows the ratio of
personal trip miles
to annual miles as a percent.
You can also reset the PERSONAL:
XX MI while it is
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 trip.
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 - This shows the current
distance traveled since the last reset for the
business trip odometer in either miles or kilometers.
of fuel used for the business trip.
BUSINESS: AVG ECONOMY - This shows how
many miles per gallon of fuel your vehicle
is
getting for the business trip based on current and
past driving conditions.
BUSINESS: XX.X MPG - This shows the amount
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BUSINESS: AVG MPH - This shows the vehicle’s
average speed for the business trip.
BUSINESS: Yo ANNUAL - This shows the ratio GI
busifless trip miles to ar,nual miles as a percent.
To reset the personal or business trip information, do
the following: press and hold the 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.
You can also reset the BUSINESS:
XX MI while it is
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 business trip.
Season Odometer
Press the trip information button until SEASON
ODOMETER appears on the display. This shows the
total distance the vehicle has been driven in either miles
or kilometers. Pressing the reset stem located on the
instrument cluster with the vehicle
off will also display
the season odometer.
Hourmeter
Press the trip button to scroll to the hourmeter. The
hourmeter shows the total number of hours the engine
has run. Pressing the reset stem on the instrument
cluster will also display the hourmeter after the season
odometer is displayed.
Annual Log
Press the trip button to scroll to the annual log. The
annual log shows the mileage accumulated since it was
iasi reset. io reset the anntial log, press and hold
the select button for two seconds.
Timer
The DIC can be used as a stopwatch. Press the select
button while TIMER is displayed
to start the timer.
The display will show the amount of time that has
passed since the timer was last reset (not including time
the ignition is
off). Time will continue to be counted as
long as the ignition is on, even
if another display is being
shown on the DIC. The timer will record up
to 99 hours,
59 minutes and 59 seconds (99:59:59) after which
the display will roll back to zero.
To stop the counting of time, press the select button
briefly while TIMER is displayed.
To reset the timer to zero, press and hold the select
button while TIMER is displayed.
Fuel Information Button
Use the fuel information button to scroll through the
range, average fuel economy, instant fuel economy and
the
GM Oil Life System.
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Fuel Range GM Oil Life System
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 ECON
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 for two seconds 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 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. 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 press and hold the select
button for five 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.
Also, the oil change reminder
will not detect dusty conditions or engine malfunctions
that may affect the oil.
Also, the oil change reminder
does not measure how much oil you have in your
engine.
So, be sure to check your oil level often.
See
Engine Oil on page 5- 13.
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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.
ALARM WARNING TYPE
AUTOMATIC LOCKING
AUTOMATIC UNLOCKING SEAT POSITION RECALL
PERIMETER LIGHTING
REMOTE LOCK FEEDBACK
REMOTE UNLOCK FEEDBACK
HEADLAMPS ON AT EXIT
CURB VIEW ASSIST EASY EXIT SEAT
DISPLAY UNITS (E/M)
DISPLAY LANGUAGE
The default options for the above features were set
when your vehicle left the factory. The default options
are noted in the text following, but may have been
changed from their default state since then. The driver’s preferences can
be recalled by pressing the
unlock button on the remote keyless entry transmitter
labeled
1 or 2 or by pressing the appropriate memory
button
1 or 2 located on the driver’s door.
Alarm Warning Type
Press the personalization button until ALARM
WARNING TYPE appears in the display. To select your
personalization for alarm warning type, press the
select button while ALARM WARNING TYPE is
displayed
on the DIC. Pressing the select button will
scroll through the following choices:
ALARM WARNING: BOTH (default): The headlamps
will flash and the horn will chirp when the alarm is
active.
ALARM WARNING: OFF: There will be no alarm
warning on activation.
ALARM WARNING: HORN: The horn will chirp when
the alarm is active.
ALARM WARNING: LAMPS: The headlamps will flash
when the alarm is active.
Choose one of the four options and press the
personalization button while your choice is displayed on
the DIC to select
it and move on to the next feature.
For more information on alarm warning type see
Content
Theft-Deterrent on page 2- 16.
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