engine CHEVROLET AVEO 2007 1.G Repair Manual

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 281.
B. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 277.
C. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 277.
D. Brake/Clutch Fluid Reservoir. See “Brake Fluid”
underBrakes on page 299andHydraulic
Clutch on page 286.
E. Automatic Transaxle Dipstick. SeeAutomatic
Transaxle Fluid on page 283.
F. Engine Coolant Surge Tank. SeeCooling
System on page 292.
G. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 361.
H. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 297.
I. Battery. SeeBattery on page 303.
J. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 298.Engine Oil
If the engine oil
pressure light comes
on, check the engine oil
level right away.
The oil pressure light is on the instrument panel
cluster for sedans. SeeOil Pressure Light on
page 169. For hatchbacks, the oil pressure light is
on the Secondary Information Center (SIC).
SeeOil Pressure Light on page 184. You should
check the engine oil level regularly; this is an
added reminder.
277

Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 276
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several
minutes to drain back into the oil pan. If you
do not do this, the oil dipstick might not
show the actual level.
2. Pull the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down
and check the level.
When to Add Engine Oil
If the oil is below the MIN (minimum) mark on the
dipstick, you need to add at least one quart/liter
of oil. But you must use the right kind. This section
explains what kind of oil to use. For engine oil
crankcase capacity, seeCapacities and
Specifications on page 368.
Notice:Do not add too much oil. If the engine
has so much oil that the oil level gets above
the upper mark that shows the proper
operating range, the engine could be damaged.
SeeEngine Compartment Overview on page 276
for the location of the engine oil fill cap.
Be sure to add enough oil to put the level
somewhere in the proper operating range. Push the
dipstick all the way back in when you are through.
278

What Kind of Engine Oil to Use
Look for three things:
•GM6094M
Your vehicle’s engine requires oil meeting GM
Standard GM6094M. Look for and use only
an oil that meets GM Standard GM6094M.
•SAE 5W-30
As shown in the viscosity chart, SAE 5W-30 is
best for your vehicle.These numbers on an oil container show its
viscosity, or thickness. Do not use other
viscosity oils such as SAE 20W-50.
•Oils meeting these
requirements should
have the starburst
symbol on the
container. This
symbol indicates that
the oil has been
certified by the
American Petroleum
Institute (API).
Look for this information on the oil container, and
use only those oils that are identified as meeting
GM Standard GM6094M and have the starburst
symbol on the front of the oil container.
Notice:Use only engine oil identied as
meeting GM Standard GM6094M and showing
the American Petroleum Institute Certied
For Gasoline Engines starburst symbol. Failure
to use the recommended oil can result in
engine damage not covered by your warranty.
GM Goodwrench
®oil meets all the requirements
for your vehicle.
279

If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both provide
easier cold starting and better protection for
the engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM
Standard GM6094M are all you need for good
performance and engine protection.
When to Change Engine Oil
If any one of these is true for you, use the short
trip/city maintenance schedule:
•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.
•You frequently use a carrier on top of
your vehicle.
•The vehicle is used for delivery service,
police, taxi, or other commercial application.
Driving under these conditions causes engine oil
to break down sooner. If any one of these is
true for your vehicle, you need to change the oil
and filter every 3,000 miles (5 000 km) or
3 months, whichever occurs first.
If none of them is true, use the long trip/highway
maintenance schedule. Change the oil and
filter every 7,500 miles (12 500 km) or 12 months,
whichever occurs first. Driving a vehicle with a
fully warmed engine under highway conditions will
cause engine oil to break down slower.
280

What to Do with Used Oil
Used engine oil contains certain elements that can
be unhealthy for your skin and could even cause
cancer. Do not let used oil stay on your skin for very
long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly
dispose of clothing or rags containing used engine
oil. See the manufacturer’s warnings about the use
and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil
from the filter before disposal. Never dispose of oil
by putting it in the trash, pouring it on the
ground, into sewers, or into streams or bodies of
water. Instead, recycle it by taking it to a place
that collects used oil. If you have a problem
properly disposing of used oil, ask your
dealer/retailer, a service station, or a local
recycling center for help.
Engine Air Cleaner/Filter
The engine air cleaner/filter is located in the
engine compartment on the passenger’s side of
the vehicle. SeeEngine Compartment Overview on
page 276for more information on location.
281

When to Inspect the Engine Air
Cleaner/Filter
Inspect the engine air cleaner/filter every
15,000 miles (25 000 km) and replace it every
30,000 miles (50 000 km). If you are driving
in dusty/dirty conditions, inspect the filter at each
engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the engine air cleaner/filter remove the
filter from the vehicle and lightly shake the filter
to release loose dust and dirt. If the filter remains
caked with dirt, a new filter is required.
To inspect or replace the filter, do the following:
1. Remove the screws and lift off the cover.
2. Inspect or replace the engine air cleaner/filter.
3. Put the cover back on tightly and tighten
the screws.
SeePart A: Scheduled Maintenance Services on
page 374for replacement intervals.
{CAUTION:
Operating the engine with the air
cleaner/lter off can cause you or others
to be burned. The air cleaner not only
cleans the air; it helps to stop ames if
the engine backres. If it is not there and
the engine backres, you could be
burned. Do not drive with it off, and be
careful working on the engine with the air
cleaner/lter off.
Notice:If the air cleaner/lter is off, a backre
can cause a damaging engine re. And, dirt
can easily get into your engine, which will
damage it. Always have the air cleaner/lter in
place when you are driving.
282

Automatic Transaxle Fluid
When to Check Automatic
Transaxle Fluid
Check your automatic transaxle fluid level at least
twice a year. Add fluid if needed. SeeAt Least
Twice a Year on page 389.
How to Check Automatic
Transaxle Fluid
Because this operation can be a little difficult, you
may choose to have this done at the dealership
service department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading
on the dipstick.Notice:Too much or too little uid can damage
the transaxle. Too much can mean that some of
the uid could come out and fall on hot engine
or exhaust system parts, starting a re. Too
little uid could cause the transaxle to overheat.
Be sure to get an accurate reading if you check
the transaxle uid.
Wait at least 30 minutes before checking the
transaxle fluid level if you have been driving:
•When outside temperatures are above
90°F (32°C).
•At high speed for quite a while.
•In heavy traffic — especially in hot weather.
To get the right reading, the fluid should be
at normal operating temperature, which is 158°F
to 176°F (70°C to 80°C).
Get the vehicle warmed up by driving about
15 miles (24 km) when outside temperatures are
above 50°F (10°C). If it is colder than 50°F (10°C),
you may have to drive longer.
283

Checking the Fluid Level
Prepare your vehicle as follows:
1. Park your vehicle on a level place. Keep the
engine running.
2. With the parking brake applied, place the shift
lever in PARK (P).
3. With your foot on the brake pedal, move the
shift lever through each gear range, pausing
for about three seconds in each range.
Then, position the shift lever in PARK (P).
4. Let the engine run at idle for three to
five minutes.Then, without shutting off the engine, follow
these steps:
The automatic transaxle dipstick is located toward
the front of the engine compartment, near the
power steering fluid reservoir. SeeEngine
Compartment Overview on page 276for more
information on location.
1. Pull out the dipstick and wipe it with a clean
rag or paper towel.
2. Push the dipstick back in all the way, wait
three seconds and then pull it back out again.
3. Check both sides of the dipstick, fluid should
be between MIN and MAX mark of the hot
area of the dipstick.
4. If the fluid level is in the acceptable range,
push the dipstick back in all the way.
284

Hydraulic Clutch
There is one reservoir for both the brake and the
hydraulic clutch fluid. SeeBrakes on page 299
for more information.
The hydraulic clutch linkage in your vehicle is
self-adjusting. The master cylinder reservoir
is filled with hydraulic fluid.
A fluid loss in this system could indicate a
problem. Have the system inspected and repaired.
When to Check and What to Use
Refer to the Maintenance Schedule to determine
how often you should check the fluid level in
your master cylinder reservoir and for the proper
fluid. SeePart B: Owner Checks and Services
on page 389andPart D: Recommended Fluids
and Lubricants on page 396.
How to Check and Add Fluid
To check the fluid level, look on the side of the
reservoir. If the fluid reaches the MAX (A) mark on
the reservoir, the fluid level is correct. If the fluid
does not reach the MIN (B) mark on the reservoir,
then fluid needs to be added. The reservoir is
located near the back of the engine compartment
on the driver’s side of the vehicle. SeeEngine
Compartment Overview on page 276for
more information on location.
286

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 five 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, seeEngine
Overheating on page 290.
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.
•Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant may require changing sooner, at
the rst maintenance service after each
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would
not be covered by your warranty. Always
use DEX-COOL
®(silicate-free) coolant in
your vehicle.
287