CHEVROLET CORVETTE 2007 6.G Owners Manual

When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A CHANGE ENGINE OIL message
will come on. Change your oil as soon as possible
within the next 600 miles (1 000 km). It is
possible that, if you are driving under the best
conditions, the oil life system may not indicate
that an oil change is necessary for over a
year. However, your engine oil and lter must
be changed at least once a year and at this
time the system must be reset. Your dealer
has GM-trained service people who will perform
this work using genuine GM parts and reset
the system. It is also important to check your
oil regularly and keep it at the proper level.
If the system is ever reset accidentally, you
must change your oil at 3,000 miles (5 000 km)
since your last oil change. Remember to reset
the oil life system whenever the oil is changed.How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to
change your engine oil and lter based on vehicle
use. Anytime your oil is changed, reset the
system so it can calculate when the next oil
change is required. If a situation occurs where
you change your oil prior to a CHANGE ENGINE
OIL message being turned on, reset the system.
To reset the CHANGE ENGINE OIL message
after an oil change, do the following:
1. Press the TRIP button so the OIL LIFE
percentage is displayed.
2. Press RESET and hold for two seconds.
OIL LIFE REMAINING 100% will appear.
If the CHANGE ENGINE OIL message comes
back on when you start your vehicle, the engine
oil life system has not reset. Repeat the procedure.
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What to Do with Used Oil
Used engine oil contains certain elements that may
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 lter 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
your used oil, ask your dealer, a service station,
or a local recycling center for help.
Engine Air Cleaner/Filter
SeeEngine Compartment Overview on page 330
for the location of the engine air cleaner/lters.Notice:If you spray water into the engine
air cleaner/lter intake and water enters
the engine air cleaner/lter housing, you
could damage your vehicle’s engine.
The repairs would not be covered by your
warranty. Do not spray water into the engine
air cleaner/lter intake and/or housing.
If you are cleaning your vehicle with the hood
open, take care not to spray water directly
into either end of the air cleaner/lter housing,
as shown in the illustration, as this could damage
your vehicle’s engine.
342

When to Inspect the Engine
Air Cleaner/Filters
Inspect the air cleaner/lters at the MaintenanceII
intervals and replace them at the rst oil change
after each 50,000 mile (83 000 km) interval.
SeeScheduled Maintenance on page 433for
more information. If you are driving in dusty/dirty
conditions, inspect the lters at each engine
oil change.
How to Inspect the Engine
Air Cleaner/Filters (6.0L V8 Engine)
To inspect the air cleaner/lters, remove the lters
from the vehicle and lightly shake the lters to
release loose dust and dirt. If the lters remain
caked with dirt, new lters are required.
To inspect or replace the engine air cleaner/lters,
do the following:1. Pull the latches on each side of the cover to
open, then move the latches up and out of
the way.
2. Push the air cleaner/lter cover toward the front
of the vehicle and then pull it up and away.
3. Inspect or replace the lter. SeeNormal
Maintenance Replacement Parts on page 445.
4. Reverse Steps 1 and 2 to replace the
air cleaner/lter cover.
5. Repeat the procedure for the second
air cleaner/lter.
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How to Inspect the Engine
Air Cleaner/Filters (7.0L V8 Engine)
To inspect the air cleaner/lters, remove the lters
from the vehicle and lightly shake the lters to
release loose dust and dirt. If the lters remain
caked with dirt, new lters are required.
To inspect or replace the engine air cleaner/lters,
do the following:
1. Remove the screws holding the lter element
in place.
2. Pull on latches found on either side of the lter.3. Inspect or replace the lter. SeeNormal
Maintenance Replacement Parts on page 445.
4. Reverse Steps 1 and 2 to replace the
air cleaner/lter cover.
{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.
344

Automatic Transmission Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check the transmission
uid level. A transmission uid leak is the only
reason for uid loss. If a leak occurs, take
the vehicle to the dealership service department
and have it repaired as soon as possible.
There is a special procedure for checking and
changing the transmission uid. Because
this procedure is difficult, you should have this
done at the dealership service department.
Contact your dealer for additional information or
the procedure can be found in the service manual.
To purchase a service manual, seeService
Publications Ordering Information on page 468.Notice:Use of the incorrect automatic
transmission uid may damage your vehicle,
and the damages may not be covered by
your warranty. Always use the automatic
transmission uid listed inRecommended
Fluids and Lubricants on page 443.
Change the uid and lter at the intervals listed in
Additional Required Services on page 436, and
be sure to use the uid listed inRecommended
Fluids and Lubricants on page 443.
Manual Transmission Fluid
It is not necessary to check the manual
transmission uid level. A transmission uid leak
is the only reason for uid loss. If a leak occurs,
take the vehicle to the dealership service
department and have it repaired as soon as
possible. SeeRecommended Fluids and
Lubricants on page 443for the proper uid to use.
345

Hydraulic Clutch
It is not necessary to regularly check clutch uid
unless you suspect there is a leak in the system.
Adding uid will not correct a leak.
A uid loss in this system could indicate a
problem. Have the system inspected and repaired.
When to Check and What to Use
The hydraulic clutch
uid reservoir cap
has this symbol
on it. SeeEngine
Compartment Overview
on page 330for
reservoir location.Refer to the Maintenance Schedule to determine
how often you should check the uid level in
your clutch master cylinder reservoir and for
the proper uid to use. SeeOwner Checks
and Services on page 438andRecommended
Fluids and Lubricants on page 443.
How to Check and Add Fluid
Make sure the uid level is at the MIN (Minimum)
line on the side of the reservoir. If it is not,
remove the cap and add the proper uid until
the level reaches the MIN line.
346

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years
or 150,000 miles (240 000 km), whichever
occurs rst, 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 350.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.
347

What to Use
Use a mixture of one-half clean, drinkable water
and one-half DEX-COOL®coolant which will
not damage aluminum parts. If you use this coolant
mixture, you do not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water,
or some other liquid such as alcohol, can
boil before the proper coolant mixture will.
Your vehicle’s coolant warning system
is set for the proper coolant mixture. With
plain water or the wrong mixture, your
engine could get too hot but you would
not get the overheat warning. Your engine
could catch re and you or others could
be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:If you use an improper coolant
mixture, your engine could overheat and be
badly damaged. The repair cost would not be
covered by your warranty. Too much water
in the mixture can freeze and crack the engine,
radiator, heater core, and other parts.
If you have to add coolant more than four times
a year, have your dealer check your cooling
system.
Notice:If you use extra inhibitors and/or
additives in your vehicle’s cooling system,
you could damage your vehicle. Use only
the proper mixture of the engine coolant
listed in this manual for the cooling system.
SeeRecommended Fluids and Lubricants
on page 443for more information.
348

Checking Coolant
The engine coolant
surge tank is located
toward the rear of the
engine compartment
on the driver’s side of
the vehicle. SeeEngine
Compartment Overview
on page 330for more
information on location.
{CAUTION:
Turning the surge tank pressure cap when
the engine and radiator are hot can allow
steam and scalding liquids to blow out
and burn you badly. Never turn the surge
tank pressure cap — even a little — when
the engine and radiator are hot.The vehicle must be on a level surface. When
your engine is cold, the coolant level should
be at the FULL COLD mark. The FULL COLD
mark is on the front of the coolant surge tank.
Do not overll the surge tank. Too much coolant
can result in an overow when the uid is hot.
Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the surge tank,
but only when the engine is cool.
{CAUTION:
You can be burned if you spill coolant
on hot engine parts. Coolant contains
ethylene glycol, and it will burn if
the engine parts are hot enough.
Do not spill coolant on a hot engine.
When replacing the pressure cap, make sure
it is hand-tight and fully seated.
349

Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is
properly and tightly secured.
The coolant surge tank pressure cap must
be fully installed on the coolant surge tank.
SeeEngine Compartment Overview on
page 330for more information on location.
Engine Overheating
You will nd an engine coolant temperature
gage on the instrument panel cluster and a
COOLANT OVER TEMPERATURE message
on the Driver Information Center (DIC). See
Engine Coolant Temperature Gage on page 199
andDIC Warnings and Messages on page 214
for more information.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can
burn you badly, even if you just open
the hood. Stay away from the engine if
you see or hear steam coming from it.
Turn it off and get everyone away from
the vehicle until it cools down. Wait until
there is no sign of steam or coolant
before you open the hood.
If you keep driving when the vehicles
engine is overheated, the liquids in it can
catch re. You or others could be badly
burned. Stop your engine if it overheats,
and get out of the vehicle until the
engine is cool.
CAUTION: (Continued)
350