2004 GMC YUKON climate control

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

Lockout Protection
This feature protects you from locking your key in the
vehicle when the key is in the ignition and a door
is open.
If the power lock switch is pressed when a door is open
and the key is in the ignition, all of the doors will lock
and then the driver’s door will unlock.
Liftgate
{CAUTION:
It Can be dangerous to drive with the liftgate
glass, liftgate or rear doors open because
carbon monoxide (CO) gas can come into your
vehicle. You can not see or smell CO. It can
cause unconsciousness and even death.
CAUTION: (Continued)
CAUTION: (Continued)
If you must drive with the liftgate glass, liftgate
or rear doors open or if electrical wiring or
other cable connections must pass through
the seal between the body and the liftgate
glass, liftgate or rear doors:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed with the
setting on VENT or OUTSIDE AIR. That will
force outside air into your vehicle. See
Climate Control System on page 3-22.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-42.
2-13

Engine Exhaust
{CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you can not see
or smell. It can cause unconsciousness and
death.
You might have exhaust coming in if:
Your exhaust system sounds strange or
different.
Your vehicle gets rusty underneath.
Your vehicle was damaged in a collision.
Your vehicle was damaged when driving
over high points on the road or over road
debris.
Repairs were not done correctly.
Your vehicle or exhaust system had been
modied improperly.
If you ever suspect exhaust is coming into
your vehicle:
Drive it only with all the windows down to
blow out any CO; and
Have your vehicle xed immediately.
Running Your Engine While You
Are Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier Caution under
Engine Exhaust on page 2-42.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the climate control fan is at the highest setting.
One place this can happen is a garage.
Exhaust — with CO — can come in easily.
NEVER park in a garage with the engine
running.
Another closed-in place can be a blizzard. See
Winter Driving on page 4-46.
2-42

Outside Curb View Assist Mirrors
If your vehicle has the optional memory package
you may have this feature.
The vehicle’s mirrors are capable of performing the curb
view assist mirror function. This feature will cause the
passenger’s and/or driver’s mirror to tilt to a preselected
position when the vehicle is in REVERSE (R). This
feature may be useful in allowing you to view the curb
when you are parallel parking. When the vehicle is
shifted out of REVERSE (R) and a short delay
has occurred, the passenger’s and/or driver’s mirror will
return to its original position.
To change the preselected tilt position, adjust the
mirrors to the desired position while the vehicle is in
REVERSE (R). When the vehicle is shifted out of
REVERSE (R), this new position is saved in memory as
the tilt position.
You may be able to enable/disable this feature through
the Driver Information Center. SeeDriver Information
Center (DIC) on page 3-58.
Outside Convex Mirror
Your passenger’s side mirror is convex. A convex
mirror’s surface is curved so you can see more from the
driver’s seat.
{CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder
before changing lanes.
Outside Heated Mirrors
The outside rearview mirrors with this option have a
defrost mode.
To turn on the defrost feature, press the rear window
defogger button. See “Rear Window Defogger”
underDual Automatic Climate Control System on
page 3-27for further information.
2-52

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

A. Dome Lamp Override Button. See “Dome Lamps”
underInterior Lamps on page 3-19.
B. Exterior Lamp Controls. SeeExterior Lamps on
page 3-15.
C. Air Outlets. See “Climate Controls” in Section 3.
D. Automatic Transfer Case/Stabilitrak
®Mode Button
(AWD Vehicles)/Traction Assist System (TAS).
SeeFour-Wheel Drive on page 2-28.
E. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-8.
F. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-41.
G. Gearshift Lever. SeeAutomatic Transmission
Operation on page 2-24.
H. Tow/Haul Selector Button (If Equipped). See
Automatic Transmission Operation on page 2-24.
I. Audio System. SeeAudio System(s) on page 3-77.
J. Comfort Control System. SeeClimate Control
System on page 3-22.K. Instrument Panel Fuse Block. SeeFuses and Circuit
Breakers on page 5-113.
L. Hood Release. SeeHood Release on page 5-11.
M. Steering Wheel Control Buttons (If Equipped).
SeeDriver Information Center (DIC) on page 3-58.
N. Center Instrument Panel Utility Block. SeeFuses and
Circuit Breakers on page 5-113.
O. Tilt Wheel Lever. SeeTilt Wheel on page 3-7.
P. Parking Brake Release. SeeParking Brake on
page 2-37.
Q. Lighter and Accessory Power Outlets. See
Accessory Power Outlets on page 3-21.
R. Storage Area (If Equipped). See “Storage Areas” in
Section 2.
S. Ashtray. SeeAshtrays and Cigarette Lighter on
page 3-21.
T. Glovebox. SeeGlove Box on page 2-60.
3-5

Climate Controls
Climate Control System
Fan Knob
The fan knob on the left side of the control panel
adjusts the fan speed. To increase airow, turn the knob
clockwise. To decrease airow, turn it counterclockwise.
To turn the fan off, turn the knob to the off position.
9(Off):If the fan is off, outside air will still enter the
vehicle, and will be directed based on the position of
the mode knob. The temperature can also be adjusted
using the temperature knob.
Temperature Knob
The middle knob on the control panel lets you select the
temperature of the air owing into the passenger
area. Turn the knob clockwise toward the red area for
warmer air. Turn the knob counterclockwise toward
the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction of air delivery.
H(Vent):This setting directs the air through the
instrument panel outlets.
3-22