2004 GMC YUKON DENALI climate control

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-7
Safety Belts
.............................................1-25
Child Restraints
.......................................1-48
Air Bag Systems
......................................1-72
Restraint System Check
............................1-86
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-16
Starting and Operating Your Vehicle
...........2-18
Mirrors
....................................................2-32
OnStar
žSystem
......................................2-37
HomeLinkžTransmitter
.............................2-39
Storage Areas
.........................................2-43
Sunroof
..................................................2-47
Vehicle Personalization
.............................2-48
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages and Indicators
.........3-30
Driver Information Center (DIC)
..................3-46
Audio System(s)
.......................................3-64Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-44
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under
the Hood
.............................................5-10
All-Wheel Drive
........................................5-45
Rear Axle
...............................................5-46
Front Axle
...............................................5-47
Bulb Replacement
....................................5-48
Windshield Wiper Blade Replacement
.........5-53
Tires
......................................................5-54
Spare Tire
...............................................5-92
Appearance Care
.....................................5-92
Vehicle Identi®cation
...............................5-102
Electrical System
....................................5-103
Capacities and Speci®cations
...................5-112
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2004 GMC Yukon Denali/Yukon XL Denali 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 speci®c component, control,
message, gage or indicator.
If you need help ®guring out a speci®c 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/Liftglass
{CAUTION:
It can be dangerous to drive with the liftgate or
liftglass 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. If you must
drive with the liftgate open or if electrical
wiring or other cable connections must pass
through the seal between the body and the
liftgate or liftglass:
·Make sure all other windows are shut.
CAUTION: (Continued)
CAUTION: (Continued)
·
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See Climate Control
System in the Index.
·If you have air outlets on or under the
instrument panel, open them all the way.
See
Engine Exhaust on page 2-30.
To unlock the liftgate and liftgate glass from the outside
use either the power door locks or the remote keyless
entry system.
The liftgate glass can be opened using the pushbutton
on the liftgate after the doors have been unlocked.
To open the entire liftgate, lift the handle located in the
center of the door.
To lock the liftgate and liftgate glass from the outside
use the remote keyless entry system or the power door
locks to lock the liftgate and liftgate glass.
2-13

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 2-30.
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 Ð with CO Ð 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 4-37.
{CAUTION:
It can be dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P) with
the parking brake ®rmly set. Your vehicle can
roll. Do not leave your vehicle when the engine
is running unless you have to. If you have left
the engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle will not move, even
when you are on fairly level ground, always set
your parking brake and move the shift lever to
PARK (P).
Follow the proper steps to be sure your vehicle will not
move. See
Shifting Into Park (P) on page 2-27.
If you are pulling a trailer, see
Towing a Trailer on
page 4-51.
2-31

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
Your vehicle may have this feature.
When you press this
button, a defogger warms
the heated driver's and
passenger's outside
rearview mirrors to help
clear them of ice,
snow and condensation.
If your vehicle has a rear window defogger, it will also
operate when you press this button. See ªRear Window
Defoggerº under
Dual Automatic Climate Control
System on page 3-20for more information.
2-36

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-14
Interior Lamps..............................................3-17
Accessory Power Outlets...............................3-18
Ashtrays and Cigarette Lighter........................3-19
Climate Controls............................................3-20
Dual Automatic Climate Control System...........3-20
Outlet Adjustment.........................................3-26
Rear Climate Control System.........................3-27
Climate Controls Personalization.....................3-29
Warning Lights, Gages and Indicators.............3-30
Warning Lights, Gages, and Indicators.............3-30
Instrument Panel Cluster................................3-31
Speedometer and Odometer...........................3-32
Tachometer.................................................3-32
Safety Belt Reminder Light.............................3-32Air Bag Readiness Light................................3-32
Passenger Air Bag Status Indicator.................3-34
Charging System Light..................................3-35
Voltmeter Gage............................................3-36
Brake System Warning Light..........................3-36
Anti-Lock Brake System Warning Light.............3-37
Traction Off Light..........................................3-38
Engine Coolant Temperature Gage..................3-38
Transmission Temperature Gage.....................3-39
Tire Pressure Light.......................................3-40
Malfunction Indicator Lamp.............................3-40
Oil Pressure Gage........................................3-43
Security Light...............................................3-44
Cruise Control Light......................................3-44
Tow/Haul Mode Light....................................3-44
Fuel Gage...................................................3-45
Low Fuel Warning Light.................................3-45
Driver Information Center (DIC).......................3-46
DIC Operation and Displays...........................3-46
DIC Warnings and Messages.........................3-57
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the
following:
A. Air Outlets. See ªClimate Controlsº in Section 3.
B. Exterior Lamps Control. See
Exterior Lamps
on page 3-14.
C. Turn Signal/Multifunction Lever. See
Turn
Signal/Multifunction Lever on page 3-7.
D. OnStaržand Radio Steering Wheel Buttons. SeeAudio Steering Wheel Controls on page 3-96.
E. Instrument Panel Cluster. See
Instrument Panel
Cluster on page 3-31.
F. Shift Lever/Tow/Haul Selector Button. See
Automatic
Transmission Operation on page 2-22.
G. Audio System. See
Audio System(s) on page 3-64.
H. Dome Override Button. See ªDome Lampsº under
Interior Lamps on page 3-17.
I. Rear Wiper Washer. See ªRear Window
Washer/Wiperº under
Turn Signal/Multifunction Lever
on page 3-7.J. Fog Lamps Button. See ªFog Lampsº under
Exterior
Lamps on page 3-14.
K. Driver Information Center (DIC) Buttons. See
Driver
Information Center (DIC) on page 3-46.
L. Parking Brake Release. See
Parking Brake on
page 2-26.
M. Tilt Wheel Lever. See
Tilt Wheel on page 3-7.
N. Comfort Control System. See
Dual Automatic
Climate Control System on page 3-20.
O. Storage Area. See ªStorage Areasº in Section 2.
P. Compact Disc Changer. See
CD Changer on
page 3-93.
Q. Accessory Power Outlet. See
Accessory Power
Outlets on page 3-18.
R. StabiliTrakžButton. SeeStabilitrakžSystem on
page 4-9.
S. Glove Box. See
Glove Box on page 2-43.
3-5

Climate Controls
Dual Automatic Climate Control
System
With this system, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also
has a ¯ow-through ventilation system described later in
this section.
You can select different climate control settings for the
driver and passengers.
Driver's Side Temperature Knob
The driver's side knob is used to adjust the temperature
of the air coming through the system on the driver's
side. The temperature can be adjusted even if the
system is turned off. This is possible since outside air
will always ¯ow through the system as the vehicle
is moving forward unless it is set to recirculation mode.
See ªRecirculationº later in this section.
Turn the knob counterclockwise or clockwise to lower or
increase the cabin temperature. The display will show
the temperature setting decreasing or increasing and an
arrow pointing to the driver will be displayed under
and to the left of the temperature setting.
Passenger's Side Temperature Knob
The passenger's side knob can be used to change the
temperature of the air coming through the system
on the passenger's side of the vehicle. The temperature
can be adjusted even if the system is turned off. This
is possible since outside air will always ¯ow through the
system as the vehicle is moving forward unless it is
set to recirculation mode. See ªRecirculationº later in this
section.
3-20