warning lights 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

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

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

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

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’ve 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.
, I
If the light doesn’t come on then, have it fixed 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 first occurrence of
a problem and each time the car is shut
off and then
restarted. See
Brake System Warning Light on
page 3-34 earlier in this section.
3-35

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’s a problem with
the anti-lock brake system,
this warning light will stay on. See
Anti-Lock
Brake
System Warning
Light on page
3-35.
Along with ABS, your vehicle has a Dynamic Rear
Proportioning (DRP) system.
If there’s 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’s
say the road is wet and you’re 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

Engine Coolant
The cooling system in your vehicle is filled 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 first, 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, see
Engine Overheating on
page
5-27.
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.
Notice: When adding coolant, it is important that
you use only
DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL@ is added to
the system, premature engine, heater core or
radiator corrosion may result.
In addition, the engine
coolant
will require change sooner -- at 30,000 miles
(50,000 km) or 24 months, whichever occurs first.
Damage caused by the use
of coolant other
than DEX-COOL@ is not covered by your new
vehicle warranty.
Let the warning lights and gages work as they
should.
5-24

W
Underbody Flushing Service ............................. 6-1 3
Underhood Fuse Block
.................................... 5-99
Understanding Radio Reception
........................ 3-82
Using HomeLink@
........................................... 2-38
Using the Recovery Hooks
............................ 4-43
Uniform Tire
Quality Grading
............................ 5-65
United States
................................................... 7-4
v
Vehicle
Control
....................................... ......... 4-5
Damage Warnings
........................................ iv
Loading
....................................... ........ 4-45
Symbols
......................................................... iv
Vehicle Identification
Number (VIN)
............................................. 5-94
Service Parts Identification Label
................... 5-94
Vehicle Personalization Memory Seat
.......................................... 2-42
Vehicle Storage
.............................................. 5-43
Vinyl
............................................................. 5-87
Visors
........................................................... 2-1 2
Voltmeter Gage
.......................................... 3-33 Warning Lights. Gages and
Indicators
................ 3-24
Warnings DIC Warnings and Messages
........................ 3-53
Other Warning Devices
.................................. 3-4 ...
Safety and Symbols ......................................... III
Washing Your Vehicle ...................................... 5-88
Hazard Warning
Flashers
............................... 3-3
Vehicle Damage .............................................. iv
Weatherstrip Lubrication
................................... 6-11
Weight of the Trailer
........................................ 4-53
Weight of Trailer Tongue
.................................. 4-54
What to Add
.................................................. 5-40
What to
Do with Used Oil ................................ 5-18
What
Kind
of Engine Oil to Use ........................ 5-16
What to Use
.......................... 5-25, 5-37, 5-38, 5-50
Wheels Alignment and Tire Balance
.......................... 5-67
Replacement
............................................... 5-67
When to Add Engine Oil
.................................. 5-15
(GM Oil Life SystemTM)
................................ 5-17
When
to Change Engine Oil
When to Check
.............................................. 5-62
When to Check and Change
............................ 5-21
When to Check Lubricant
................................. 5-50
15