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

Canadian Owners
GENERAL MOTORS, GM, the GM Emblem, GMC, the
GMC Truck Emblem and the name SIERRA DENALI
are registered trademarks of General Motors
Corporation.
This manual includes the latest information at the time
it
was printed. We reserve the right to make changes
after that time without further notice. For vehicles first
sold in Canada, substitute the name ”General Motors of
Canada Limited” for GMC whenever it appears in this
manual.
Please keep this manual in your vehicle,
so it will be
there
if you ever need it when you’re on the road. If you
sell the vehicle, please leave this manual
in it so the
new owner can use it. You can
obtain a French copy of this manual from your
dealer or from:
Helm, Incorporated P.O. Box
07130
Detroit, MI 48207
How to Use This Manual
Many people read their owner’s manual from beginning
to end when they first receive their new vehicle.
If
you do this, it will help you learn about the features and
controls for your vehicle. In this manual, you’ll find
that pictures and words work together to explain things.
Index
A good place to look for what you need is the Index in
back of the manual. It’s an alphabetical list of what’s
in the manual, and the page number where you’ll find it.
Litho in USA. @Copyright General Motors Corporation 06/24/02
Part No. S2315 A First Edition All Rights Reserved
ii

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

These are some examples of vehicle symbols you may find on your vehicle:
POSSIBLE /r
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
CAUSTIC
ACID COULD BATTERY
CAUSE
BURNS
AVOID
SPARKS
OR
FLAMES
SPARK
OR
COULD FLAME
'\Ir8
EXPLODE
BAlTERY LATCH BOTH LAP AND
SHOULDER BELTS TO
PROTECT OCCUPANT
48: @
DO NOT TWIST SAFm
BELT WHEN AlTACHING
FASTEN SEAT
BELTS
MOVE SEAT FULLY
\v!
REARWARD* /g
SECURE
CHILD SEAT
PULL BELT
COMPLETELY
THEN SECURE CHILD
SEAT
DO NOT INSTALL
A REAR-FACING
CHILD RESTRAINT
@o
POSITION 8
IN THIS SEATING
DO NOT INSTALL
A
CHILD RESTRAINT p?
FORWARD-FACING IN THIS SEATING POSITION
8
DOOR LOCK
UNLOCK SGHTING
- MASTER SWITCH B- / ,
SIGNALS @e
TURN
PARKING
PC
LAMPS
RUNNING
*:{io
DAYTIME LAMPS
LAMPS
#O
ENGINE
COOLANT
cc.
TEMP
CHARGING BAlTERY
SYSTEM
COOLANT
ENGINE OIL PRESSURE
W&
ANTI-LOCK (@)
BRAKES
FE E]
ACCESS
COOLANT
m-1
ENGINE FAN
OWNERS MANUAL
SERVICE
MANUAL
V

NOTES
vi

Section Seats and Restraint Systems
Front Seats ..................................................... .l -2
Power Seats ............................. .............. 1-2
Power Lumbar ............................................... 1-3
Heated Seats
................................................. 1-3
Reclining Seatbacks
........................................ 1-4
Head Restraints
............................................. 1-6
Rear Seats
....................................................... 1 -7
Rear Seat Operation
....................................... 1-7
Safety Belts
..................................................... 1-8
Questions and Answers About Safety Belts
...... 1-1 2
How to Wear Safety Belts Properly
................. 1-13
Driver Position
.............................................. 1.1 3
Safety Belt Use During Pregnancy
.................. 1-21
Right Front Passenger Position
....................... 1-22
Safety Belts: They
Are for Everyone
................. 1-8
Center Passenger Position
............. ..... 1-22
Rear Seat Passengers
...................... ..... 1-24
Rear Safety Belt Comfort Guides for Children and Small Adults
.......................... 1-27
Safety Belt Extender
......................... ..... 1-29
Child Restraints
............................. ..... 1-30
Older Children
.............................................. 1-30
Infants and Young Children ............................ 1-32
Child Restraint Systems
................................ -1-36
Where to Put the Restraint
............................. 1-38
Top Strap
................................................... .l -40
Top Strap Anchor Location ............................. 1.41
Children (LATCH System)
....................... 1-43
for the LATCH System
............................... 1-46
Outside Seat Position
................................ 1-46
Rear Seat Position
.................................... 1-48
Front Seat Position
.................................... 1-50
Air Bag Systems ....................... .............. 1-57
Where Are the Air Bags?
............................ 1-59
When Should an Air Bag Inflate? .................... 1-61
What Makes an Air Bag Inflate?
..................... 1-61
Lower Anchorages and Top
Tethers for
Securing a Child Restraint Designed
Securing a Child Restraint in a Rear
Securing a Child Restraint in a Center
Securing a Child Restraint
in the Right
How Does an Air Bag Restrain?
..................... 1-62
What Will You See After an Air Bag Inflates?
... 1-62
Air Bag
Off Switch ........................................ 1-64
Passenger Sensing System
............................ 1-68
Servicing Your Air Bag-Equipped Vehicle
......... 1-72
Adding Equipment to Your Air Bag-Equipped
Vehicle
.................................................... 1-72
Restraint System Check
.................................. 1-73
Checking Your Restraint Systems ................... 1-73
Replacing Restraint System Parts
After a Crash
.............................. ...... .l -73
1-1

Front Seats
Power Seats
Raise or lower the front of the seat by raising or
lowering the forward edge of the control. Raise or lower
the rear of the seat by raising or lowering the rear
edge of the control.
Move the seat forward or rearward by moving the whole
control toward the front or toward the rear
of the
vehicle.
Moving the whole control up or down raises or lowers
the entire seat cushion.
Vertical Control: See
Reclining Seatbacks on
page
1-4.
Horizontal Control: You can adjust your vehicle’s front
seats with the horizontal control located on the
outboard edge
of each front seat.
1-2

Power Lumbar
, If your vehicle has this
’ feature, the four-way
control is located on the
To increase or decrease support, press and hold the
front or rear of the control. Let go of the control when the
lower seatback reaches the desired level
of support.
You can also reshape the side wing area of the
lower seatback for more lateral support. To increase or
decrease support, press and hold the top or bottom
of the control. Let go of the control when the lower
seatback reaches the desired level of support.
Heated Seats
1
If your vehicle has this
feature, the button used to
control the driver’s heated seat
is located on
the driver’s door panel.
The button used to control
the passenger’s heated
seat is located on the
passenger’s door panel.
To heat the entire seat, press the horizontal button.
Press the button to cycle through the temperature
settings of high, medium, and low. The indicator light
will glow to indicate the level of heat selected.
To heat only the seatback, press the vertical button with
the heated seatback symbol. An indicator light
on the
button will glow to designate that only the seatback
is being heated.
The engine must be running for them to operate.
The heated front seats will be canceled after the ignition
is turned
off. If you still want to use the heated front
seat feature after
you restart your vehicle, you will need
to press the heated seat button again.
1-3