warning lights GMC YUKON 2004 Owner's Manual

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-23
Child Restraints
.......................................1-45
Air Bag Systems
......................................1-72
Restraint System Check
............................1-87
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-18
Starting and Operating Your Vehicle
...........2-20
Mirrors
....................................................2-43
OnStar
®System
......................................2-53
HomeLink®Transmitter
.............................2-55
Storage Areas
.........................................2-60
Sunroof
..................................................2-63
Vehicle Personalization
.............................2-64
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-22
Warning Lights, Gages and Indicators
.........3-40
Driver Information Center (DIC)
..................3-58
Audio System(s)
.......................................3-77Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-53
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
.................5-10
All-Wheel Drive
........................................5-51
Rear Axle
...............................................5-52
Four-Wheel Drive
.....................................5-53
Front Axle
...............................................5-54
Bulb Replacement
....................................5-55
Windshield Wiper Blade Replacement
.........5-62
Tires
......................................................5-63
Appearance Care
...................................5-103
Vehicle Identication
...............................5-112
Electrical System
....................................5-113
Capacities and Specications
...................5-122
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index................................................................ 1
2004 GMC Yukon/Yukon XL Owner ManualM

Vehicle Damage Warnings
Also, in this book you will nd these notices:
Notice:These mean there is something that could
damage your vehicle.
A notice will tell you about something that can damage
your vehicle. Many times, this damage would not be
covered by your warranty, and it could be costly. But the
notice will tell you what to do to help avoid the
damage.
When you read other manuals, you might see CAUTION
and NOTICE warnings in different colors or in different
words.
You’ll also see warning labels on your vehicle. They use
the same words, CAUTION or NOTICE.
Vehicle Symbols
Your vehicle has components and labels that use
symbols instead of text. Symbols, used on your vehicle,
are shown along with the text describing the operation
or information relating to a specic component, control,
message, gage or indicator.
If you need help guring out a specic name of a
component, gage or indicator, reference the following
topics:
Seats and Restraint Systems in Section 1
Features and Controls in Section 2
Instrument Panel Overview in Section 3
Climate Controls in Section 3
Warning Lights, Gages and Indicators in Section 3
Audio System(s) in Section 3
Engine Compartment Overview in Section 5
iv

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-7
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-8
Exterior Lamps.............................................3-15
Interior Lamps..............................................3-19
Accessory Power Outlets...............................3-21
Ashtrays and Cigarette Lighter........................3-21
Climate Controls............................................3-22
Climate Control System.................................3-22
Dual Climate Control System..........................3-23
Dual Automatic Climate Control System...........3-27
Rear Air Conditioning System.........................3-34
Rear Air Conditioning and Heating System.......3-35
Rear Air Conditioning and Heating System
and Electronic Climate Controls...................3-38
Warning Lights, Gages and Indicators.............3-40
Warning Lights, Gages, and Indicators.............3-40
Instrument Panel Cluster................................3-41
Speedometer and Odometer...........................3-42
Tachometer.................................................3-42
Safety Belt Reminder Light.............................3-42
Air Bag Readiness Light................................3-43
Passenger Air Bag Status Indicator.................3-43Battery Warning Light....................................3-45
Voltmeter Gage............................................3-45
Brake System Warning Light..........................3-46
Anti-Lock Brake System Warning Light.............3-47
Traction Off Light..........................................3-48
Engine Coolant Temperature Gage..................3-49
Transmission Temperature Gage.....................3-49
Tire Pressure Light.......................................3-51
Malfunction Indicator Lamp.............................3-51
Oil Pressure Gage........................................3-55
Cruise Control Light......................................3-56
Four-Wheel-Drive Light..................................3-56
Tow/Haul Mode Light....................................3-56
Fuel Gage...................................................3-57
Low Fuel Warning Light.................................3-57
Driver Information Center (DIC).......................3-58
DIC Operation and Displays...........................3-58
DIC Warnings and Messages.........................3-70
Audio System(s).............................................3-77
Setting the Time for Radios without Radio
Data Systems (RDS)..................................3-77
Setting the Time for Radios with Radio
Data Systems (RDS)..................................3-78
AM-FM Radio...............................................3-78
Radio with CD..............................................3-81
Radio with Cassette and CD..........................3-92
Section 3 Instrument Panel
3-1

Warning Lights, Gages and
Indicators
Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that may
be on your vehicle. The pictures will help you locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you will
see in the details on the next few pages, some
warning lights come on briey when you start the
engine just to let you know they’re working. If you are
familiar with this section, you should not be alarmed
when this happens.Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there’s a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about it. Please follow this manual’s advice.
Waiting to do repairs can be costly – and even
dangerous. So please get to know your warning lights
and gages. They’re a big help.
Your vehicle also has a driver information system that
works along with the warning lights and gages. See
Driver Information Center (DIC) on page 3-58.
3-40

{CAUTION:
Your brake system may not be working
properly if the brake system warning light is
on. Driving with the brake system warning light
on can lead to an accident. If the light is still
on after you have pulled off the road and
stopped carefully, have the vehicle towed for
service.
Anti-Lock Brake System Warning
Light
With the anti-lock brake
system, this light will come
on when you start your
engine and may stay on for
several seconds.
That’s normal. If the light doesn’t come on then, have it
xed so it will be ready to warn you if there is a problem.
If the light stays on, or comes on when you’re driving,
your vehicle needs service. You will also hear a chime
sound when the light is on steady. If the regular brake
system warning light isn’t on, you still have brakes, but
you don’t have anti-lock brakes. If the regular brake
system warning light is also on you don’t have anti-lock
brakes and there’s a problem with your regular brakes. In
addition to both lights, you will also hear a chime sound
on the rst occurrence of a problem and each time the
vehicle is shut off and then restarted. SeeBrake System
Warning Light on page 3-46.
3-47

Anti-lock Brake System
Your vehicle has anti-lock brakes. ABS is an advanced
electronic braking system that will help prevent a
braking skid.
When you start your engine and begin to drive away,
your anti-lock brake system will check itself. You
may hear a momentary motor or clicking noise while
this test is going on. This is normal.
If there is a problem with
the anti-lock brake system,
this warning light will
stay on. SeeAnti-Lock
Brake System Warning
Light on page 3-47.
Along with ABS, your vehicle has a Dynamic Rear
Proportioning (DRP) system. If there is a DRP problem,
both the brake and ABS warning lights will come on
accompanied by a 10-second chime. The lights
and chime will come on each time the ignition is turned
on until the problem is repaired. See your dealer for
service.Let us say the road is wet and you are driving safely.
Suddenly, an animal jumps out in front of you. You slam
on the brakes and continue braking. Here’s what
happens with ABS:
A computer senses that wheels are slowing down. If
one of the wheels is about to stop rolling, the computer
will separately work the brakes at each front wheel
and at both rear wheels.
4-7

The traction control system is enabled automatically
when you start your vehicle, and it will activate and
display the TRACTION ACTIVE message in the Driver
Information Center (DIC) if it senses that any of the
wheels are spinning or beginning to lose traction while
driving. If you turn off Stabilitrak
®, only the brake-traction
control portion of traction control will work. The engine
speed management will be disabled. In this state, engine
power is not reduced automatically and the driven wheels
can spin more freely. This can cause the brake-traction
control to activate constantly. For more information on the
traction active message, seeDriver Information
Center (DIC) on page 3-58.
Notice:If the traction off light comes on due to
heavy braking and/or because the traction control
system has been continuously active, do not
allow the wheel(s) of one axle to spin excessively.
If you do, you may be causing damage to the
transfer case. This could lead to costly repairs not
covered by your warranty.
If the brake-traction control system activates constantly or
if the brakes have heated up due to high speed braking,
the brake-traction control will be disabled and the
TRACTION SYS LIMITED message will be displayed. In
the limited mode, the traction control system will only use
engine traction-control and is limited in its ability to
provide optimal performance since the system will not
utilize brake traction-control to control slip on the drivewheels. The system will return to normal operation after
the brakes have cooled. This can take up to two minutes
or longer depending on brake usage.
Notice:If you allow the wheel(s) of one axle to spin
excessively while the traction off, ABS and brake
warning lights and the SERVICE STABILITY
MESSAGE are displayed, you could damage the
transfer case. The repairs would not be covered by
your warranty. Reduce engine power and do not
spin the wheel(s) excessively while these lights and
this message are displayed.
The traction control system may activate on dry or
rough roads or under conditions such as heavy
acceleration while turning or abrupt upshifts/downshifts
of the transmission. When this happens you may
notice a reduction in acceleration, or may hear a noise
or vibration. This is normal.
If your vehicle is in cruise control when the system
activates, the STABILITY SYS ACTIVE message will
appear on the Driver Information Center (DIC), and the
cruise control will automatically disengage. When
road conditions allow you to use cruise again, you may
re-engage the cruise control. See “Cruise Control”
underTurn Signal/Multifunction Lever on page 3-8
Stabilitrak
®may also turn off automatically if it
determines that a problem exists with the system. If the
problem does not clear itself after restarting the
vehicle, you should see your dealer for service.
4-13

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add only
DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-29.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
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.
What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which won’t damage
aluminum parts. If you use this coolant mixture,
you don’t need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
5-26

U
Underhood Fuse Block...................................5-117
Understanding Radio Reception.......................3-137
Uniform Tire Quality Grading............................5-79
United States................................................... 7-4
Used Replacement Wheels..............................5-82
Using Cleaner on Fabric................................5-104
Using HomeLink
®...........................................2-58
Using Song List Mode...................................3-120
Using the Recovery Hooks...............................4-51
V
Vehicle
Control........................................................ 4-5
Damage Warnings........................................... iv
Loading......................................................4-56
Symbols......................................................... iv
Vehicle Data Collection and Event Data Records . 7-10
Vehicle Identication
Number (VIN)............................................5-112
Service Parts Identication Label..................5-112
Vehicle Personalization
Memory Seat..............................................2-64
Vehicle Storage..............................................5-44
Video Screen................................................3-126
Visors...........................................................2-17
Voltmeter Gage..............................................3-45
W
Warning Lights, Gages and Indicators................3-40
Warnings
DIC Warnings and Messages........................3-70
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-7
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle....................................5-107
Weight Distributing Hitches and Weight
Carrying Hitches..........................................4-69
Weight of the Trailer........................................4-65
Weight of the Trailer Tongue.............................4-68
What Kind of Engine Oil to Use........................5-17
What to Add..................................................5-42
What to Do with Used Oil................................5-20
What to Use..........................5-26, 5-39, 5-40, 5-52
Wheels
Alignment and Tire Balance..........................5-80
Replacement...............................................5-81
When to Add Engine Oil..................................5-17
When to Change Engine Oil (GM Oil
Life System)...............................................5-19
When to Check..............................................5-72
When to Check and Change............................5-23
When to Check Lubricant.................................5-52
When to Check Power Steering Fluid................5-39
17