2009 CHEVROLET AVEO height

Brake Wear
This vehicle has front disc brakes and could have rear
drum brakes or rear disc brakes.
Disc brake pads have built-in wear indicators that make a
high-pitched warning sound when the brake pads are
worn and new pads are needed. The sound can come
and go or be heard all the time the vehicle is moving,
except when applying the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that soon the
brakes will not work well. That could lead to an
accident. When the brake wear warning sound is
heard, have the vehicle serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.
Some driving conditions or climates can cause a brake
squeal when the brakes are rst applied or lightly applied.
This does not mean something is wrong with the brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in the
proper sequence to torque specications inCapacities
and Specifications on page 5-93.If the vehicle has rear drum brakes, they do not have
wear indicators, but if a rear brake rubbing noise is
heard, have the rear brake linings inspected
immediately. Rear brake drums should be removed and
inspected each time the tires are removed for rotation
or changing. When the front brake pads are replaced,
have the rear brakes inspected, too.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer/retailer if the brake pedal does not
return to normal height, or if there is a rapid increase in
pedal travel. This could be a sign that brake service
might be required.
Brake Adjustment
Every moderate brake stop, the disc brakes adjust for
wear. If rarely making moderate or heavier brake stops,
the brakes might not adjust correctly. Very carefully
making a few moderate brake stops about every
1,000 miles (1 600 km) will adjust the brakes properly.
If the vehicle has rear drum brakes and the brake pedal
goes down farther than normal, the rear drum brakes
might need adjustment. Adjust them by backing up and
rmly applying the brakes a few times.
5-36

Tire Sidewall Labeling
Usefulinformation about a tire is molded into its
sidewall. The examples below show a typical
passenger car tire and a compact spare tire
sidewall.(A) Tire Size
:The tire size is a combination of
letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction type
and service description. See the “Tire Size”
illustration later in this section for more detail.
(B) DOT (Department of Transportation)
:The
Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
(C) Tire Identication Number (TIN)
:The letters
and numbers following DOT code are the Tire
Identication Number (TIN). The TIN shows
the manufacturer and plant code, tire size, and
date the tire was manufactured. The TIN is molded
onto both sides of the tire, although only one
side may have the date of manufacture.
(D) Tire Ply Material
:The type of cord and
number of plies in the sidewall and under the
tread.
(E) Uniform Tire Quality Grading (UTQG)
:Tire
manufacturers are required to grade tires
based on three performance factors: treadwear,
traction and temperature resistance. For more
information seeUniform Tire Quality Grading on
page 5-66.
Passenger Car Tire Example
5-52

(F) Maximum Cold Ination Load Limit:Maximum load that can be carried and the
maximum pressure needed to support that load.
For information on recommended tire pressure see
Inflation - Tire Pressure on page 5-57and
Loading the Vehicle on page 4-16.
(A) Temporary Use Only
:The compact
spare tire or temporary use tire has a tread life of
approximately 3,000 miles (5 000 km) and should
not be driven at speeds over 65 mph (105 km/h).The compact spare tire is for emergency use when
a regular road tire has lost air and gone at. See
Compact Spare Tire on page 5-78andIf a Tire
Goes Flat on page 5-69.
(B) Tire Ply Material
:The type of cord and
number of plies in the sidewall and under the tread.
(C) Tire Identication Number (TIN)
:The Tire
Identication Number (TIN). The TIN shows the
manufacturer and plant code, tire size, and date the
tire was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
(D) Maximum Cold Ination Load Limit
:Maximum load that can be carried and the
maximum pressure needed to support that load.
SeeCompact Spare Tire on page 5-78andLoading
the Vehicle on page 4-16.
(E) Tire Ination
:The temporary use tire or
compact spare tire should be inated to 60 psi
(420 kPa). For more information on tire pressure
and ination seeInflation - Tire Pressure on
page 5-57.
(F) Tire Size
:A combination of letters and
numbers dene a tire’s width, height, aspect ratio,
construction type and service description. The letter
T as the rst character in the tire size means the tire
is for temporary use only.Compact Spare Tire Example
5-53

Tire Size
The following illustration shows an example of a
typical passenger car tire size.
(A) Passenger (P-Metric) Tire
:The United States
version of a metric tire sizing system. The letter P
as the rst character in the tire size means a
passenger vehicle tire engineered to standards set
by the U. S. Tire and Rim Association.
(B) Tire Width
:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio
:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 70, as
shown in item C of the illustration, it would mean
that the tire’s sidewall is 70% as high as it is wide.(D) Construction Code
:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter
:Diameter of the wheel in
inches.
(F) Service Description
:These characters
represent the load index and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The speed
rating is the maximum speed a tire is certied to
carry a load.
Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the tire.
Air pressure is expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
5-54

Aspect Ratio:The relationship of a tire’s height
to its width.
Belt
:A rubber coated layer of cords that is located
between the plies and the tread. Cords may be
made from steel or other reinforcing materials.
Bead
:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure
:The amount of air pressure in
a tire, measured in pounds per square inch (psi) or
kilopascals (kPa) before a tire has built up heat
from driving. SeeInflation - Tire Pressure on
page 5-57.
Curb Weight
:The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant, but
without passengers and cargo.
DOT Markings
:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identication Number (TIN), an
alphanumeric designator which can also identify the
tire manufacturer, production plant, brand, and date
of production.GVWR
:Gross Vehicle Weight Rating. See
Loading the Vehicle on page 4-16.
GAWR FRT
:Gross Axle Weight Rating for the
front axle. SeeLoading the Vehicle on page 4-16.
GAWR RR
:Gross Axle Weight Rating for the
rear axle. SeeLoading the Vehicle on page 4-16.
Intended Outboard Sidewall
:The side of an
asymmetrical tire, that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric unit for air pressure.
Light Truck (LT-Metric) Tire
:A tire used on
light duty trucks and some multipurpose passenger
vehicles.
Load Index
:An assigned number ranging from
1 to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Ination Pressure
:The maximum air
pressure to which a cold tire can be inated.
The maximum air pressure is molded onto the
sidewall.
Maximum Load Rating
:The load rating for a tire
at the maximum permissible ination pressure
for that tire.
5-55

If you need to replace any of your wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor System (TPMS)
sensors, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, wheel nuts, and TPMS
sensors for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel bolts,
or wheel nuts on your vehicle can be dangerous. It
could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use the
correct wheel, wheel bolts, and wheel nuts for
replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-70for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is dangerous.
You cannot know how it has been used or how far it
has been driven. It could fail suddenly and cause a
crash. If you have to replace a wheel, use a new
GM original equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class “S” type chains
that are the proper size for your tires. Install them
on the front tires and tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
5-68

D
Daytime Running Lamps Indicator Light.............3-36
Defensive Driving............................................. 4-2
Disc, MP3......................................................3-54
Doing Your Own Service Work........................... 5-4
Dome Lamp ...................................................3-16
Door
Ajar Light...................................................3-36
Central Door Unlocking System....................... 2-7
Door Ajar Reminder....................................... 2-7
Locks.......................................................... 2-6
Rear Door Security Locks............................... 2-7
Driver
Seat Height Adjuster...................................... 1-5
Driving
At Night.....................................................4-10
Before a Long Trip......................................4-11
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Highway Hypnosis.......................................4-12
Hill and Mountain Roads..............................4-12
In Rain and on Wet Roads...........................4-10
Rocking Your Vehicle to Get it Out.................4-16
Winter........................................................4-13
Driving for Better Fuel Economy......................... 4-2
E
EDR .............................................................7-18
Electrical System
Add-On Equipment......................................5-86
Engine Compartment Fuse Block...................5-89
Fuses and Circuit Breakers...........................5-87
Headlamp Wiring.........................................5-87
Instrument Panel Fuse Block.........................5-88
Power Windows and Other Power Options......5-87
Windshield Wiper Fuses...............................5-87
Engine
Air Cleaner/Filter.........................................5-19
Change Engine Oil Light...............................3-35
Check and Service Engine Soon Lamp...........3-32
Coolant......................................................5-25
Coolant Temperature Gage...........................3-31
Drive Belt Routing.......................................6-16
Engine Compartment Overview......................5-14
Exhaust.....................................................2-32
Oil .............................................................5-16
Oil Life System...........................................5-18
Overheating................................................5-30
Starting......................................................2-19
Engine Heater................................................2-21
Event Data Recorders.....................................7-19
Extender, Safety Belt.......................................1-34
Exterior Lamps...............................................3-13
4

Headlamps....................................................5-44
Bulb Replacement.......................................5-43
Daytime Running Lamp................................3-14
Exterior Lamps............................................3-13
Flash-to-Pass............................................... 3-8
Front Turn Signal, Sidemarker and
Parking Lamps.........................................5-45
Halogen Bulbs............................................5-43
High/Low Beam Changer................................ 3-8
Heater...........................................................3-18
Engine.......................................................2-21
Height Adjuster, Driver Seat............................... 1-5
Highbeam On Light.........................................3-36
Highway Hypnosis...........................................4-12
Hill and Mountain Roads..................................4-12
Hold Mode Light.............................................3-30
Hood
Checking Things Under................................5-11
Release.....................................................5-12
Horn ............................................................... 3-6
How to Wear Safety Belts Properly...................1-21
Hydraulic Clutch.............................................5-23
I
Ignition Positions.............................................2-18
Immobilizer....................................................2-14
Immobilizer Operation......................................2-15
Inadvertent Power Battery Saver.......................3-16Infants and Young Children, Restraints...............1-38
Ination - Tire Pressure...................................5-57
Instrument Panel
Brightness..................................................3-15
Cluster.......................................................3-24
Overview..................................................... 3-4
J
Jump Starting.................................................5-38
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Labeling, Tire Sidewall.....................................5-52
Lamp
Malfunction Indicator....................................3-32
Lamps
Dome ........................................................3-16
Inadvertent Power Battery Saver....................3-16
Lap-Shoulder Belt...........................................1-30
LATCH System for Child Restraints...................1-46
License Plate Lamps.......................................5-49
6