2003 CHEVROLET AVALANCHE lights

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-10
Child Restraints
.......................................1-32
Air Bag Systems
......................................1-52
Restraint System Check
............................1-67
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-7
Windows
.................................................2-23
Theft-Deterrent Systems
............................2-25
Starting and Operating Your Vehicle
...........2-27
Mirrors
....................................................2-46
OnStar
žSystem
......................................2-53
HomeLinkžTransmitter
.............................2-55
Storage Areas
.........................................2-59
Sunroof
..................................................2-84
Vehicle Personalization
.............................2-85
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
...................................................4-48
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-49
Four-Wheel Drive
.....................................5-50
Front Axle
...............................................5-51
Bulb Replacement
....................................5-52
Windshield Wiper Blade Replacement
.........5-60
Tires
......................................................5-61
Appearance Care
.....................................5-88
Vehicle Identi®cation
.................................5-96
Electrical System
......................................5-96
Capacities and Speci®cations
...................5-106
Normal Maintenance Replacement Parts
....5-108
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2003 Chevrolet Avalanche 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

You can also reshape the back wing area of the lower
seatback.
·To increase support in the wing area of the lower
seatback, press and hold the top of the control.
Let go of the control when the lower seatback
reaches the desired level of support.
·To decrease support in the wing area of the lower
seatback, press and hold the bottom of the control.
Let go of the control when the lower seatback
reaches the desired level of support.
Heated Seats
Your vehicle may have
heated front seats. The
buttons used to control this
feature are located on
the front doors. The engine
must be running for the
heated seat feature
to work.
To heat the entire seat, press the horizontal button with
the heated seat symbol. Press the button to cycle
through the temperature settings of high, medium and
low and to turn the heated seat off. Indicator lights
will glow to designate the level of heat selected, three
for high, two for medium, and one for low.
1-4

{CAUTION:
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the
transmission is in PARK (P). You or someone
else could be seriously injured. Be sure to set
the parking brake before placing the transfer
case in NEUTRAL. See²Parking Brake²in the
Index.
NEUTRAL:Shift the vehicle's transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-48orTowing
Your Vehicle on page 4-48for more information.
Indicator lights in the switches show which setting you
are in. The indicator lights will come on brie¯y when you
turn on the ignition and one will stay on. If the lights
do not come on, you should take your vehicle to your
dealer for service. An indicator light will ¯ash while
shifting the transfer case. It will remain illuminated when
the shift is complete. If for some reason the transfer
case cannot make a requested shift, it will return to the
last chosen setting.If the SERVICE 4WD message stays on, you should
take your vehicle to your dealer for service. See²Service
4WD message²under
Driver Information Center (DIC)
on page 3-46.
Shifting into 4HI or AUTO 4WD
Press and release the 4 hi or AUTO 4WD switch. This
can be done at any speed (except when shifting
from 4LO), and the indicator light will ¯ash while shifting.
It will remain illuminated when the shift is completed.
Shifting into 2HI
Press and release the 2 hi switch. This can be done at
any speed (except when shifting from 4LO).
Shifting into 4LO
To shift to the 4 lo position, the ignition must be in RUN
and the vehicle must be stopped or moving less than
3 mph (4.8 km/h) with the transmission in NEUTRAL (N).
The preferred method for shifting into 4LO is to have
your vehicle moving 1 to 2 mph (1.6 to 3.2 km/h). Press
and release the 4 lo switch. You must wait for the
4LO indicator light to stop ¯ashing and remain
illuminated before shifting your transmission in gear.
2-36

Mirrors
Manual Rearview Mirror
Twist the tab under the mirror to reduce glare from
headlamps behind you after dark. Twist the the tab back
for normal daytime operation.
Automatic Dimming Rearview Mirror
with OnStar
ž, Compass and
Temperature Display
Your vehicle may have this feature. When on, an
electrochromic mirror automatically dims to the proper
level to minimize glare from lights behind you after dark.
The mirror also includes a duel display in the upper
right corner of the mirror face. The compass reading and
the outside temperature will both appear in the display
at the same time.
P(On/Off):This is the on/off button.
Temperature and Compass Display
Press the on/off button, located to the far left, brie¯y to
turn the comp/temp display on or off.
If the display reads CAL, you will need to calibrate the
compass. For more information on calibration, see
below.
To adjust between Fahrenheit and Celsius do the
following:
1. Press and hold the on/off button for approximately
four seconds until either a ¯ashing ÉF, or ÉC
appears.
2. Press the button again to change the display to the
desired unit of measurement. After approximately
four seconds of inactivity, the new unit will be locked
in and the compass/temperature display will
return.
Electrochromic Mirror Operation
The electrochromic (self dimming) mirror function is
turned on automatically each time the ignition is started.
To operate the electrochromic mirror do the following:
1. Make sure the green indicator light, located to
the left of the on/off button, is lit. If it's not, press
and hold the on/off button for approximately
six seconds until the green light comes on,
indicating that the mirror is in electrochromic (self
dimming) mode.
2-46

Compass Calibration
The compass may need calibration if one of the
following occurs:
·After approximately ®ve seconds, the display does
not show a compass heading (N for North, for
example), there may be a strong magnetic ®eld
interfering with the compass. Such interference may
be caused by a magnetic antenna mount, magnetic
note pad holder or a similar magnetic item.
·The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, push
the on/off button for approximately 12 seconds or
until CAL is displayed.
The compass can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display
reads a direction.
Passenger Air Bag Indicator
Your vehicle may be equipped with a passenger air bag
indicator, on the mirror glass, just above the buttons.
If your vehicle has this feature, the mirror will display the
word ON, or an air bag symbol in Canada, when the
passenger air bag is enabled. For more information, see
Passenger Sensing System on page 1-62.
Cleaning the Mirror
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner to enter the mirror housing.
Automatic Dimming Rearview Mirror
with Compass and Temperature
Display
If your vehicle is equipped with an electrochromic mirror
it will automatically dim to the proper level to minimize
glare from lights behind you after dark.
The mirror also includes a display in the upper right
corner of the mirror face. The compass reading and the
outside temperature will both appear in the display at the
same time. The dual display can be turned on or off by
brie¯y pressing either the TEMP or the COMP button.
2-48

Storage Areas
Glove Box
To open your glove box, pull the lever upward and pull
the door downward.
Center Overhead Console
Your vehicle may have an overhead console equipped
with reading lights and a small storage area.
Press the button next to the light to turn it on. Press it
again to turn it off.
Front Armrest Storage Area
Your vehicle may have a center armrest storage
compartment in the front bench seat.
To open it, fold down the armrest and press the latch
handle located at the front of the armrest. Then, let the
lid pop up and swing open.The storage compartment has a cassette/compact disc
holder. The holder will store up to 6 compact disc
cases and 5 cassette tape cases or a total of
11 cassette tape cases.
If not used to store cassette or compact disc cases, the
storage area can be used to store a laptop computer.
To use the writing table, pull the latch at the rear of the
table and swing the writing table forward. Use it to
hold a pad of paper and a pen.
Center Console Storage Area
Your vehicle may have a console compartment with
cupholders between the bucket seats.
To open it, press the button and swing the console lid
open.
The rear of the console has a cupholder that swings
down for the rear seat passenger to use.
2-59

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.............................................3-13
Interior Lamps..............................................3-17
Accessory Power Outlets...............................3-19
Ashtrays and Cigarette Lighter........................3-19
Climate Controls............................................3-20
Automatic Climate Control System...................3-20
Dual Climate Control System..........................3-26
Outlet Adjustment.........................................3-28
Climate Controls Personalization.....................3-29
Warning Lights, Gages and Indicators.............3-30
Instrument Panel Cluster................................3-31
Speedometer and Odometer...........................3-32
Tachometer.................................................3-33
Safety Belt Reminder Light.............................3-33Air Bag Readiness Light................................3-33
Passenger Air Bag Status Indicator.................3-34
Charging System Light..................................3-36
Voltmeter Gage............................................3-36
Brake System Warning Light..........................3-37
Anti-Lock Brake System Warning Light.............3-38
Traction Off Light..........................................3-38
Engine Coolant Temperature Gage..................3-39
Transmission Temperature Gage.....................3-40
Malfunction Indicator Lamp.............................3-41
Oil Pressure Gage........................................3-43
Security Light...............................................3-44
Cruise Control Light......................................3-44
Tow/Haul Mode Light....................................3-45
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