warning GMC SIERRA DENALI 2003 Owners Manual

The 2003 GMC Sierra Denali Owner Manual a
Seats and Restraint Systems ........................... 1-1
Front Seats ............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................. 1-8
Child Restraints
....................................... 1-30
Air Bag Systems
...................................... 1-57
Restraint System Check
............................ 1-73
Features and Controls
..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-6
Windows
................................................. 2-1 0
Theft-Deterrent Systems ............................ 2-1 3
Starting and Operating Your Vehicle ........... 2-15
Mirrors
.................................................... 2-28
Onstar@ System
...................................... 2-33
HomeLink@ Transmitter
............................. 2-35
Storage Areas
......................................... 2-39
Instrument Panel
............................................. 3-1
Vehicle
Personalization
............................. 2-42
Instrument Panel Overview
.......................... 3-2
Climate Controls
...................................... 3-1 8
Warning Lights, Gages and Indicators
......... 3-24
Driver Information Center (DIC)
.................. 3-43
Audio System(s)
....................................... 3-61 Driving Your Vehicle
....................................... 4-1
Your
Driving, the Road, and Your Vehicle ..... 4-2
Towing
................................................... 4-45
Service and Appearance Care
.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
............................................. 5-10
All-Wheel Drive
........................................ 5-49
Rear Axle
............................................... 5-50
Front Axle
............................................... 5-51
Bulb Replacement
.................................... 5-52
Windshield Wiper Blade Replacement
......... 5-60
Tires
...................................................... 5-61
Appearance Care
..................................... 5-86
Vehicle Identification
................................. 5-94
Electrical System
...................................... 5-95
Capacities and Specifications
................... 5-1 04
Normal Maintenance Replacement Parts
.... 5-1 05
Maintenance Schedule
..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information
.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-9
Index
................................................................. 1

Safety Warnings and Symbols
You will find a number of safety cautions in this book.
We use a box and the word CAUTION to tell you about
things that could hurt you
if you were to ignore the
warning.
These mean tl.Lme
is something that could hurt
you
or other people.
In the caution area, we tell you what the hazard is.
Then we tell you what to do to help avoid or reduce the
hazard. Please read these cautions. If you don’t, you
or others could be hurt.
- You will also find a circle
with a slash through
it in
this book. This safety
symbol means “Don’t,’’
“Don’t do this” or “Don’t let
this happen.”
iii

Vehicle Damage Warnings
Also, in this book you will find 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 help figuring out a specific name of a
component, gage or indicator reference the following
topics in the Index:
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

Parking Brake
To set the parking brake, hold the regular brake pedal
down with your right foot. Push down the parking
brake pedal with your left foot.
A chime will activate and the warning light will flash
when the parking brake is applied and the vehicle
is moving at least
3 mph (5 km/h) for at least three
seconds.
If the ignition is on when the parking brake is released,
the brake system warning light will go
off.
Notice: Driving with the parking brake on can
cause your rear brakes
to overheat. You may have
to replace them, and you could also damage
other parts
of your vehicle.
If you are towing a trailer and are parking on any hill,
see
Towing a Trailer on page 4-51.
To release the parking brake, hold the regular brake
pedal down. Pull the bottom edge
of the lever, located
above the parking brake pedal, with the parking
brake symbol, to release the parking brake.
2-22

Section 3 Instrument Panel
I~s~Pu~~~IP Panel OWWV~~W ............................... 3.2
Hazard Warning Flashers
................................ 3.3
Other Warning Devices ................................... 3.4
Horn
............................................................. 3.4
Tilt Wheel
..................................................... 3.4
Turn SignaVMultifunction 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
............................. 3.26
Air Bag Readiness Light
................................ 3-27
Passenger Air Bag Status Indicator
................. 3.30
Battery Warning Light
.................................... 3.33
Brake System Warning Light
.......................... 3.34
Anti-Lock Brake System Warning Light
............. 3.35
Air
Bag
Off Light .......................................... 3-28
Voltmeter Gage
............................................ 3-33
Engine Coolant Temperature Gage
..... ..... 3.36 Transmission Temperature
Gage
..................... 3.36
Malfunction Indicator Lamp
............................. 3.38
Oil Pressure Gage
........................................ 3-40
Cruise Control Light
...................................... 3.41
Tow/Haul Mode Light
.................................... 3-41
Fuel Gage
................................................... 3.42
Driver Information Center (DIC)
....................... 3.43
DIC Operation and Displays
........................... 3.43
DIC Warnings and Messages
......................... 3.53
Audio System(s)
............................................. 3.61
Setting the Time
...................... .......... 3.6 1
Radio with Cassette and CD ..... .............. 3.62
Rear Seat Audio (RSA)
............................. 3.76
CD Changer
................................................ 3-78
Theft-Deterrent Feature
................................. -3-81
Audio Steering Wheel Controls
....................... 3.81
Understanding Radio Reception
...................... 3-82
Care of Your Cassette Tape Player
................ -3-83
Care of Your CDs
......................................... 3.84
Care of Your CD Player
................................ 3.84
Fixed Mast Antenna
...................................... 3.84
XMTM Satellite Radio Antenna System
............. 3.84
DAB Radio Antenna System
........................... 3.84
Low Fuel Warning Light
................................. 3-42

Hazard Warning Flashers The main components of your instrument panel are the
following:
A. Dome Lamp Override Button
9. 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 System
K. Instrument Panel Fuse Block
L. Hood Release
M. Audio Steering Wheel Controls
(If Equipped)
N. Center Instrument Panel Fuse Block
0. Tilt Lever
P. Parking Brake Release
Q. Compact Disc Changer (If Equipped)
R. Ashtray
S. Accessory Power Outlet
1. Air Bag Off Switch and 4-Wheel Steer Button
U. Glovebox Your hazard
warning flashers let you warn others. They
also let police know you have a problem. Your front
and rear turn signal lamps will flash on and
off.
3-3

The hazard warning
flasher button is located at
the top
of the steering
column.
Horn
To sound the horn, press the center pad on the steerin?
wheel.
Your hazard warning flashers work no matter what
position your key is in, and even
if the key isn’t in.
Press the button to make the front and rear turn signal
lamps flash on and
off. Press the button again to
turn the flashers
off.
When the hazard warning flashers are on, your turn
signals won’t work.
Other Warning Devices
If you carry reflective triangles, you can use them to
warn others. Set one up at the side
of the road about
300 feet (100 m) behind your vehicle.
Tilt Wheel
A tilt wheel allows you to adjust the steering wheel
before you drive. You can raise
it to the highest level to
give your legs more room when you exit and enter
your vehicle.
The tilt steering wheel
lever is located on the
lower left side
of the
steering column.
To tilt the wheel, hold the steering wheel and pull the
lever. Then move the steering wheel to a comfortable
position and release the lever to lock the wheel in place.
3-4

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 briefly 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 lnformation Center (DIC) on page 3-43.
3-24

Battery Warning Light Voltmeter Gage
If this light is displayed
when the engine is
running, you may have a
problem with your charging
system.
The battery display will also stay on while the key is in
RUN until the engine is started.
If the light stays on after starting the engine it could
indicate a problem with the generator drive belt, or some
other charging system problem. Have it checked right
away. Driving with this light displayed could drain
your battery.
If you must drive a short distance with this light
displayed, it helps to turn
off all your accessories, such
as the radio and the air conditioner. When your
engine is not running, but the ignition is in
RUN, this gage shows your battery’s state of charge in
DC volts.
When the engine is running, the gage shows the
condition of the charging system. Readings between the
low and high warning zones indicate the normal
operating range.
Readings in the low warning zone may occur when a
large number
of electrical accessories are operating in
the vehicle and the engine is left at an idle for an
extended period. This condition
is normal since the
charging system is not able to provide full power
at engine idle.
As engine speeds are increased, this
condition should correct itself as higher engine speeds
allow the charging system to create maximum power.
3-33

You can only drive for a short time with the reading in
either warning zone.
If you must drive, turn off all
unnecessary accessories.
Readings in either warning zone indicate a possible
problem in the electrical system. Have the vehicle
serviced as soon as possible.
Brake System Warning Light
With the ignition on, the brake system warning light will
flash when you set the parking brake. The light will
flash
if the parking brake doesn’t release fully. If you try
to drive with the parking brake engaged, a chime
will sound when the vehicle speed is greater than
3 mph (5 km/h).
Your vehicle’s hydraulic brake system is divided into two
parts.
If one part isn’t working, the other part can still
work and stop you. For good braking, though, you need
both parts working well.
If the warning light comes on and a chime sounds there
could be a brake problem. Have your brake system
inspected right away.
I BRAKE I
-
United States Canada
This light should come on briefly when you turn the
ignition key
to RUN. If it doesn’t come on then, have it
fixed
so it will be ready to warn you if there’s a problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder
to push. Or, the pedal may go closer to the
floor. It may take longer
to stop. If the light is still on,
have the vehicle towed for service. See Towing
Your Vehicle on page 4-45.
3-34