2007 CHEVROLET CORVETTE cooling

The coolant level should be at the FULL COLD
mark on the front of the coolant surge tank. If it is
not, you may have a leak at the pressure cap or in
the radiator hoses, heater hoses, radiator, water
pump or somewhere else in the cooling system.
{CAUTION:
Heater and radiator hoses, and other
engine parts, can be very hot. Do not
touch them. If you do, you can be burned.
Do not run the engine if there is a leak.
If you run the engine, it could lose all
coolant. That could cause an engine re,
and you could be burned. Get any leak
xed before you drive the vehicle.
If there seems to be no leak, with the engine on,
check to see if the electric engine cooling fan is
running. If the engine is overheating, the fan should
be running. If it is not, your vehicle needs service.Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. SeeOverheated Engine Protection
Operating Mode on page 352for information
on driving to a safe place in an emergency.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant could require changing sooner,
at 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.
How to Add Coolant to the Coolant
Surge Tank
If you have not found a problem yet, check
to see if coolant is visible in the surge tank.
If coolant is visible but the coolant level is not
at the FULL COLD mark on the front of the
coolant surge tank, add a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant at
354

the coolant surge tank, but be sure the cooling
system, including the coolant surge tank pressure
cap, is cool before you do it. SeeEngine
Coolant on page 347for more information.
If no coolant is visible in the surge tank, add
coolant as follows:
{CAUTION:
Steam and scalding liquids from a hot
cooling system can blow out and burn
you badly. They are under pressure, and if
you turn the coolant surge tank pressure
cap — even a little — they can come out
at high speed. Never turn the cap when
the cooling system, including the coolant
surge tank pressure cap, is hot. Wait
for the cooling system and coolant
surge tank pressure cap to cool if you
ever have to turn the pressure cap.
{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:In cold weather, water can freeze and
crack the engine, radiator, heater core and
other parts. Use the recommended coolant
and the proper coolant mixture.
355

{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.
1. You can remove the coolant surge tank
pressure cap when the cooling system,
including the coolant surge tank pressure
cap and upper radiator hose, is no longer hot.
Turn the pressure cap slowly counterclockwise
about one-quarter turn and then stop.
If you hear a hiss, wait for that to stop.
A hiss means there is still some pressure left.
2. Then keep turning the pressure cap slowly,
and remove it.
356

3. Fill the coolant surge tank with the proper
mixture until the level inside stabilizes at
the FULL COLD mark on the front of the
surge tank.4. With the coolant surge tank pressure cap off,
start the engine and let it run until you can
feel the upper radiator hose getting hot.
Watch out for the engine cooling fan.
By this time, the coolant level inside the
coolant surge tank may be lower. If the level
is lower, add more of the proper mixture
to the coolant surge tank until the level
stabilizes at the FULL COLD mark on the
coolant surge tank.
357

{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 clearance to the body
and chassis.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause a crash. When you
change a wheel, remove any rust or dirt
from places where the wheel attaches to
the vehicle. In an emergency, you can use
a cloth or a paper towel to do this; but be
sure to use a scraper or wire brush later,
if you need to, to get all the rust or dirt off.
{CAUTION:
Never use oil or grease on studs or the
threads of the wheel nuts. If you do, the
wheel nuts might come loose and the
wheel could fall off, causing a crash.
399

Fuse Usage
5 Stoplamps/Back-Up Lamps
6 02 Sensor
7 Battery Main 5
8 Park Lamps
9Powertrain Relay Input/
Electronic Throttle Control
10 Manual Transmission Solenoids
11Engine Control Module/
Transmission Control Module/
Easy Key Module
12 Odd Numbered Fuel Injectors
13Electronic Suspension Control
(Option)
14Canister Purge Solenoid,
Mass Air Flow Sensor
15 Air Conditioner Compressor
16 Even Numbered Fuel Injectors
17 Windshield Washer
18 Headlamp Washer
19Passenger Side Low-Beam
HeadlampFuse Usage
20 Fuel Pump
21 Driver Side Low-Beam Headlamp
22 Front Fog Lamp
23Passenger Side High-Beam
Headlamp
24 Driver Side High-Beam Headlamp
J-Style Fuses Usage
25 Cooling Fan
26 Battery Main 3
27 Anti-lock Brake System
28Heating/Ventilation/
Air Conditioning Blower
29 Battery Main 2
30 Starter
31 Audio Amplier
32 Blank
33 Battery Main 1
424

Capacities and Specications
The following approximate capacities are given in English and metric conversions.
SeeRecommended Fluids and Lubricants on page 443for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant
charge amount, see the refrigerant
caution label located under the hood.
See your dealer for more information.
Cooling System 12.6 qt 11.9 L
Engine Oil with Filter
6.0 L V8 Engine 5.5 qt 5.2 L
6.0 L V8 Engine Performance Package (Z51) 6.0 qt 5.7 L
7.0 L V8 Engine 8.0 qt 7.6 L
Fuel Tank 18.0 gal 68.0 L
Transmission Fluid
Automatic Transmission
(Pan Removal and Filter Replacement)6.5 qt 6.2 L
Manual Transmission – Base 3.6 qt 3.5 L
426

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 333. Reset oil life system.
SeeEngine Oil Life System on page 340.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (g).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 342.See footnote (k).•
Check tire ination pressures and tire wear. SeeTires on page 378.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Replace passenger compartment air lter.See footnote (j).•
435