service CHEVROLET AVEO 2007 1.G Workshop Manual

Tire Sidewall Labeling
Useful information 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 define 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
Identification 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.
Passenger Car Tire Example
320

(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
Identification 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 344and
Loading Your Vehicle on page 249.
(E) Tire Ination:The temporary use tire or
compact spare tire should be inflated to 60 psi
(420 kPa). For more information on tire pressure
and inflation seeInflation - Tire Pressure on
page 326.
(F) Tire Size:A combination of letters and
numbers define a tire’s width, height, aspect ratio,
construction type and service description. The
letter T as the first character in the tire size means
the tire is for temporary use only.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 first 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.
322

(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 range and the speed rating of a
tire. The load range represents the load carry
capacity a tire is certified to carry. The speed
rating is the maximum speed a tire is certified to
carry a load. Speed ratings range from A to Z.
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.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 326.
Curb Weight:This means 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.
323

How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are
properly inflated simply by looking at them. Radial
tires may look properly inflated even when they
are under-inflated. Check the tire’s inflation
pressure when the tires are cold. Cold means your
vehicle has been sitting for at least three hours
or driven no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage firmly onto the valve to
get a pressure measurement. If the cold tire
inflation pressure matches the recommended
pressure on the Tire and Loading Information
label, no further adjustment is necessary. If the
inflation pressure is low, add air until you reach the
recommended amount.
If you overfill the tire, release air by pushing on
the metal stem in the center of the tire valve.
Re-check the tire pressure with the tire gage.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
Any time you notice unusual wear, rotate your
tires as soon as possible and check wheel
alignment. Also check for damaged tires or wheels.
SeeWhen It Is Time for New Tires on page 329
andWheel Replacement on page 333for
more information.
The purpose of regular rotation is to achieve
more uniform wear for all tires on the vehicle.
The first rotation is the most important. See
Part A: Scheduled Maintenance Services on
page 374.
327

Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum selection width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the Unites States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course. For example, a tire
graded 150 would wear one and a half (1
1⁄2) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction — AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
332

Vehicle Identication
Vehicle Identication Number (VIN)
This is the legal identifier for your vehicle. It
appears on a plate in the front corner of the
instrument panel, on the driver side. You can see
it if you look through the windshield from outside
your vehicle. The VIN also appears on the Vehicle
Certification and Service Parts labels and the
certificates of title and registration.
Engine Identication
The eighth character in your VIN is the engine
code. This code helps you identify your vehicle’s
engine, specifications, and replacement parts.
Service Parts Identication Label
This label is on the inside of the glove box.
It is very helpful if you ever need to order parts.
The label has the following information:
•Vehicle Identification Number (VIN)
•Model designation
•Paint information
•Production options and special equipment
Do not remove this label from the vehicle.
354

Maintenance Schedule................................ 372
Introduction............................................... 372
Maintenance Requirements........................ 372
Your Vehicle and the Environment............ 372
How This Section is Organized................. 373
Part A: Scheduled Maintenance Services.... 374
Using the Maintenance Schedule............... 374
Selecting the Right Schedule..................... 375
Short Trip/City Scheduled Maintenance..... 376
Long Trip/Highway Scheduled
Maintenance.......................................... 384
Part B: Owner Checks and Services......... 389
At Each Fuel Fill....................................... 389At Least Once a Month............................. 389
At Least Twice a Year.............................. 389
At Least Once a Year............................... 390
Part C: Periodic Maintenance Inspections.... 394
Steering, Suspension and Front Drive
Axle Boot and Seal Inspection............... 394
Exhaust System Inspection........................ 394
Fuel System Inspection............................. 395
Engine Cooling System Inspection............. 395
Brake System Inspection........................... 395
Part D: Recommended Fluids and
Lubricants.............................................. 396
Part E: Maintenance Record...................... 398
Section 6 Maintenance Schedule
371

How This Section is Organized
This maintenance schedule is divided into
five parts:
“Part A: Scheduled Maintenance Services”
explains what to have done and how often.
Some of these services can be complex, so
unless you are technically qualified and have
the necessary equipment, you should let
your dealer/retailer do these jobs.
Your dealer/retailer has trained and supported
service people that will perform the work
using genuine parts.
{CAUTION:
Performing maintenance work on a
vehicle can be dangerous. In trying to do
some jobs, you can be seriously injured.
Do your own maintenance work only if
you have the required know-how and the
proper tools and equipment for the job.
If you have any doubt, have a qualied
technician do the work. SeeDoing Your
Own Service Work on page 265.If you want to purchase service information, see
Service Publications Ordering Information on
page 420.
“Part B: Owner Checks and Services”tells you
what should be checked and when. It also
explains what you can easily do to help keep your
vehicle in good condition.
“Part C: Periodic Maintenance Inspections”
explains important inspections that your
dealer/retailer can perform for you.
“Part D: Recommended Fluids and Lubricants”
lists some recommended products necessary to
help keep your vehicle properly maintained. These
products, or their equivalents, should be used
whether you do the work yourself or have it done.
“Part E: Maintenance Record”is a place for
you to record and keep track of the maintenance
performed on your vehicle. Keep your
maintenance receipts. They may be needed to
qualify your vehicle for warranty repairs.
373

Part A: Scheduled Maintenance
Services
In this part are scheduled maintenance services
which are to be performed at the mileage intervals
specified.
Using the Maintenance Schedule
We want to keep your vehicle in good working
condition. But we do not know exactly how you will
drive it. You may drive short distances only a
few times a week. Or you may drive long distances
all the time in very hot, dusty weather. You may
use your vehicle in making deliveries. Or you
may drive it to work, to do errands, or in many
other ways.
Because of the different ways people use their
vehicles, maintenance needs may vary. You might
need more frequent checks and replacements.
So please read the following and note how
you drive. If you have questions on how to keep
your vehicle in good condition, see your
dealer/retailer.This part tells you the maintenance services you
should have done and when to schedule them.
When you go to your dealer/retailer for your
service needs, you will know that trained and
supported service people will perform the
work using genuine parts.
The proper fluids and lubricants to use are listed
in Part D. Make sure whoever services your
vehicle uses these. All parts should be replaced
and all necessary repairs done before you or
anyone else drives the vehicle.
These schedules are for vehicles that:
•carry passengers and cargo within
recommended limits. You will find these on
the Tire and Loading Information label.
SeeLoading Your Vehicle on page 249.
•are driven on reasonable road surfaces within
legal driving limits.
•use the recommended fuel. SeeGasoline
Octane on page 266.
374

Selecting the Right Schedule
First you will need to decide which of the
two schedules is right for your vehicle. Here is
how to decide which schedule to follow:
Short Trip/City Denition
Follow the Short Trip/City Scheduled Maintenance if
any one of these conditions is true for your vehicle:
•Most trips are less than 5 miles (8 km).
This is particularly important when outside
temperatures are below freezing.
•Most trips include extensive idling, such as
frequent driving in stop-and-go traffic.
•If the vehicle is used for delivery service,
police, taxi, or other commercial application.
One of the reasons you should follow this schedule
if you operate your vehicle under any of these
conditions is that these conditions cause engine oil
to break down sooner.
Short Trip/City Intervals
Every 3,000 Miles (5 000 km):Engine Oil and
Filter Change (or 3 months, whichever occurs first).
Every 6,000 Miles (10 000 km):Tire Rotation.Every 15,000 Miles (25 000 km):Engine Air
Cleaner Filter Inspection. Passenger Compartment
Air Filter Replacement. Drive Belt(s) Inspection.
Every 30,000 Miles (50 000 km):Engine Air
Cleaner Filter Replacement. Spark Plug
Replacement. EVAP System Service. PCV System
Service. Timing Belt Inspection. Brake/Clutch Fluid
Change (or 24 months, whichever occurs first).
Every 42,000 Miles (70 000 km):Engine Oil Pan
Drain Plug Washer Replacement.
Every 60,000 Miles (100 000 km):Spark Plug
Wire Replacement. Timing Belt Replacement.
EVAP System Solenoid Valve Replacement.
Every 90,000 Miles (150 000 km):Fuel Filter
Replacement.
Every 150,000 Miles (240 000 km):Cooling
System Service.
These intervals only summarize maintenance
services. Be sure to follow the complete scheduled
maintenance on the following pages.
375