2003 GMC SIERRA audio

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-6
Safety Belts
.............................................. 1-7
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-55
Restraint System Check
............................1-71
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-6
Windows
.................................................2-11
Theft-Deterrent Systems
............................2-13
Starting and Operating Your Vehicle
...........2-15
Mirrors
....................................................2-28
OnStar
®System
......................................2-33
HomeLink®Transmitter
.............................2-35
Storage Areas
.........................................2-39
Vehicle Personalization
.............................2-41
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-18
Warning Lights, Gages and Indicators
.........3-24
Driver Information Center (DIC)
..................3-42
Audio System(s)
.......................................3-56Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-46
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
.........5-56
Tires
......................................................5-56
Appearance Care
.....................................5-82
Vehicle Identication
.................................5-90
Electrical System
......................................5-91
Capacities and Specications
.....................5-99
Normal Maintenance Replacement Parts
....5-100
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-8
Index................................................................ 1
2003 GMC Sierra Denali Owner ManualM
2003 - Sierra Denali Owner Manual

Vehicle Damage Warnings
Also, in this book you willfind 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 specific component, control,
message, gage or indicator.
If you need helpfiguring out a specificnameofa
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
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2003 - Sierra Denali

Instrument Panel Overview...............................3-2
Hazard Warning Flashers................................3-4
Other Warning Devices...................................3-4
Horn .............................................................3-5
Tilt Wheel.....................................................3-5
Turn Signal/Multifunction Lever.........................3-5
Exterior Lamps.............................................3-11
Interior Lamps..............................................3-15
Accessory Power Outlets...............................3-16
Ashtrays and Cigarette Lighter........................3-17
Climate Controls............................................3-18
Dual Automatic Climate Control System...........3-18
Warning Lights, Gages and Indicators.............3-24
Instrument Panel Cluster................................3-25
Speedometer and Odometer...........................3-26
Tachometer.................................................3-26
Safety Belt Reminder Light.............................3-27
Air Bag Readiness Light................................3-27
Air Bag Off Light..........................................3-28
Passenger Air Bag Status Indicator.................3-31
Battery Warning Light....................................3-33
Voltmeter Gage............................................3-33
Brake System Warning Light..........................3-34
Anti-Lock Brake System Warning Light.............3-35
Engine Coolant Temperature Gage..................3-36Transmission Temperature Gage.....................3-36
Malfunction Indicator Lamp.............................3-37
Oil Pressure Gage........................................3-40
Cruise Control Light......................................3-40
Tow/Haul Mode Light....................................3-41
Fuel Gage...................................................3-41
Low Fuel Warning Light.................................3-41
Driver Information Center (DIC).......................3-42
DIC Operation and Displays...........................3-42
DIC Warnings and Messages.........................3-51
Audio System(s).............................................3-56
Setting the Time...........................................3-57
Radio with Cassette and CD..........................3-57
Navigation/Radio System...............................3-70
Rear Seat Audio (RSA).................................3-71
CD Changer................................................3-73
Theft-Deterrent Feature..................................3-75
Audio Steering Wheel Controls.......................3-76
Understanding Radio Reception......................3-76
Care of Your Cassette Tape Player.................3-77
Care of Your CDs.........................................3-78
Care of Your CD Player................................3-78
Fixed Mast Antenna......................................3-78
XM™ Satellite Radio Antenna System
(United States Only)..................................3-78
Section 3 Instrument Panel
3-1
2003 - Sierra Denali

The main components of your instrument panel are the
following:
A. Dome Lamp Override Button
B. Exterior Lamp Control
C. Air Outlets
D. Storage Compartment
E. Multifunction Lever
F. Instrument Panel Cluster
G. Shift Lever
H. Tow/Haul Selector Switch (If Equipped)
I. Audio System
J. Comfort Control SystemK. Instrument Panel Fuse Block
L. Hood Release
M. Audio Steering Wheel Controls (If Equipped)
N. Center Instrument Panel Fuse Block
O. Tilt Lever
P. Parking Brake Release
Q. Compact Disc Changer (If Equipped)
R. Ashtray
S. Accessory Power Outlet
T. Air Bag Off Switch and 4–Wheel Steer Button
U. Glovebox
3-3
2003 - Sierra Denali

DRIVER DOOR AJAR
If the driver’s door is not fully closed, this message will
appear on the display and you will hear a chime.
Stop and turn off the vehicle, check the door for
obstacles, and close the door again. Check to see if the
message still appears on the DIC. Pressing the select
button will acknowledge this message and clear it
from the DIC display.
PASSENGER DOOR AJAR
If the passenger’s door is not fully closed, this message
will appear on the display and you will hear a chime.
Stop and turn off the vehicle, check the door for
obstacles, and close the door again. Check to see if the
message still appears on the DIC. Pressing the select
button will acknowledge this message and clear it
from the DIC display.
RFA# BATTERY LOW
If a remote keyless entry transmitter battery is low, this
message will appear on the DIC. The battery needs
to be replaced in the transmitter. Pressing the select
button will acknowledge this message and clear it from
the DIC display.
Audio System(s)
Notice:Before you add any sound equipment to
your vehicle–like a tape player, CB radio, mobile
telephone or two-way radio–be sure you can
add what you want. If you can, it’s very important to
do it properly. Added sound equipment may
interfere with the operation of your vehicle’s engine,
radio or other systems, and even damage them.
Your vehicle’s systems may interfere with the
operation of sound equipment that has been added
improperly.
So, before adding sound equipment, check with
your dealer and be sure to check federal rules
covering mobile radio and telephone units.
Your audio system has been designed to operate easily
and to give years of listening pleasure. You will get
the most enjoyment out of it if you acquaint yourself with
itfirst. Figure out which radio you have in your vehicle,
find out what your audio system can do and how to
operate all of its controls to be sure you’re getting the
most out of the advanced engineering that went into it.
Your vehicle may have a feature called Retained
Accessory Power (RAP). With RAP, you can play your
audio system even after the ignition is turned off.
See“Retained Accessory Power (RAP)”underIgnition
Positions on page 2-16.
3-56
2003 - Sierra Denali

Setting the Time
Press and hold the HR button until the correct hour
appears on the display. Press and hold the MN button
until the correct minute appears on the display. The time
may be set with the ignition on or off.
To synchronize the time with an FM station broadcasting
Radio Data System (RDS) information, press and
hold the hour and minute buttons at the same time until
RDS TIME appears on the display. To accept this
time, press and hold the hour and minute buttons, at the
same time, for another 2 seconds. If the time is not
available from the station, NO UPDAT will appear on the
display instead.
RDS time is broadcast once a minute. Once you have
tuned to an RDS broadcast station, it may take a
few minutes for your time to update.
Radio with Cassette and CD
Radio Data System (RDS)
Your audio system is equipped with a Radio Data
System (RDS). RDS features are available for use only
on FM stations that broadcast RDS information.
•Seek to stations broadcasting the selected type of
programming,
•receive announcements concerning local and
national emergencies,
•display messages from radio stations, and
•seek to stations with traffic announcements.
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2003 - Sierra Denali

This system relies upon receiving specific information
from these stations and will only work when the
information is available. In rare cases, a radio station
may broadcast incorrect information that will cause
the radio features to work improperly. If this happens,
contact the radio station.
While you are tuned to an RDS station, the station name
or the call letters will appear on the display instead of the
frequency. RDS stations may also provide the time of
day, a program type (PTY) for current programming and
the name of the program being broadcast.
XM™Radio Satellite Service
(USA Only)
XM™is a continental U.S. based satellite radio service
that offers 100 coast to coast channels including
music, news, sports, talk and children’s programming.
XM™provides digital quality audio and text information,
including song title and artist name. A service fee is
required in order to receive the XM™service. For more
information, contact XM™at www.xmradio.com or
call 1-800-852-XMXM (9696).
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease volume.AUTO VOL (Automatic Volume):Your vehicle is
equipped with Bose AudioPilot
®noise compensation
technology. AudioPilot monitors the level of noise in the
vehicle and automatically increases or decreases the
level of the audio to keep your audio above the noise.
To use this feature press the AUTO VOL button
until AVOL ON appears on the display. This feature
works best at lower volume settings where background
noise may be louder than the audio. At high volume
settings, where the audio is much louder than the
background noise, there will be no change in the audio
level. To turn automatic volume off, press this button
until AVOL OFF appears on the display.
DISP (Display):Push this knob to switch the display
between radio station frequency and time. Time display
is available with the ignition turned off.
For RDS, push this knob to change what appears on
the display while using RDS. The display options
are station name, RDS station frequency, PTY and the
name of the program (if available).
For XM™(USA only, if your radio is equipped with
XM™Satellite Radio Service), push this knob while in
XM mode to retrieve various pieces of information
related to the current song or channel. By pressing and
releasing this knob, you may retrieve four different
categories of information: Artist, Song Title, Category or
PTY, Channel Number/Channel Name.
3-58
2003 - Sierra Denali

Setting the Tone (Bass/Treble)
AUDIO:Press and release the AUDIO knob until BASS
or TREB appears on the display. Turn the knob to
increase or to decrease. The display will show the bass
or treble level. If a station is weak or noisy, you may
want to decrease the treble.
To adjust the bass and treble to the middle position,
push and hold the AUDIO knob. The radio will produce
one beep and adjust the display level to the middle
position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker control is displayed. The radio will produce
one beep and display ALL with the level display in
the middle position.
AUTO EQ (Automatic Equalization):Press this button
to enhance the audio performance for different
passengers in the vehicle.
The setting last chosen will appear on the display when
youfirst press AUTO EQ. Each time you press this
button, another setting will appear on the display and
AUTO EQ will switch to one of the preset settings listed.
Your audio system allows you to choose from four
different equalization settings: normal, driver, rear and
spacious. These settings can be used while listening to
the radio, cassette or the CD player.NORMAL:This setting provides the best overall vehicle
sound quality for all seating locations.
DRIVER:This setting gives the driver the best sound
quality.
REAR:This setting gives the rear seat passengers the
best sound quality.
SPACIOUS:This setting makes the listening space
seem larger.
The radio can save separate AUTO EQ settings for
each preset and source.
Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance to the right and the
left speakers, push and release the AUDIO knob until
BAL appears on the display. Turn the knob to move the
sound toward the right or the left speakers.
To adjust the fade to the front and the rear speakers,
push and release the AUDIO knob until FADE appears
on the display. Turn the knob to move the sound
toward the front or the rear speakers.
To adjust the balance and fade to the middle position,
push the AUDIO knob then push it again and hold it until
the radio produces one beep. The balance and fade
will be adjusted to the middle position and the display
will show the speaker balance.
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2003 - Sierra Denali