cooling CHEVROLET CORVETTE 2019 User Guide

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
226 Vehicle Care
1.Passenger Compartment Air
Filter 0155 (Out of View).
2. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
3. Engine Compartment Fuse
Block 0259.
4. Engine Air Cleaner/Filter 0239.
5. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
6. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0232.
7. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0232.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
228 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
230 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
232 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0237. .
Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil (Except
ZR1, Z06, Grand Sport, and
Stingray with Z51)
If the ENGINE OIL LOW–ADD OIL
message displays on the Driver
Information Center (DIC), check the
engine oil level right away.
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0225 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
242 Vehicle Care
Cooling System (Engine)
The cooling system allows the
engine to maintain the correct
working temperature.
LT1 Engine (without Dry SumpEngine Oil Tank)
1. Coolant Surge Tank withPressure Cap
2. Engine Cooling Fan (Out of View)
LT1 Engine (with Dry Sump
Engine Oil Tank)
1. Coolant Surge Tank withPressure Cap
2. Engine Cooling Fan (Out of View)
LT4 Engine (with Dry Sump
Engine Oil Tank)
1. Coolant Surge Tank withPressure Cap
2. Engine Cooling Fan (Out of View)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Vehicle Care 243
LT5 Engine (with Dry SumpEngine Oil Tank)
1. Coolant Surge Tank withPressure Cap
2. Engine Cooling Fan (Out of View)
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. See Recommended Fluids
and Lubricants 0321. The fluid
requires changing at certain
intervals. See Maintenance
Schedule 0312.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0247.
What to Use
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
Use a mixture of 40% DEX-COOL
coolant and 60% clean, drinkable
water. If using this mixture, nothing
else needs to be added. This
mixture:
. Gives freezing protection down
to−28 °C (−18 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
244 Vehicle Care
.Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health. If ambient temperatures are
anticipated below
−28 °C (−18 °F),
make sure a proper mixture ratio of
50% DEX-COOL coolant and 50%
clean, drinkable water is used.Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible
but the coolant level is not at or
above the cold fill line, add a
mixture of 40% DEX-COOL coolant
and 60% clean, drinkable water at
the coolant recovery tank, but be
sure the cooling system is cool
before this is done. See Engine
Overheating 0247.
The engine coolant surge tank is
toward the rear of the engine
compartment on the passenger side
of the vehicle. See Engine
Compartment Overview 0225. When the engine is cold, the coolant
level should be at the cold fill line on
the coolant surge tank.
When the engine is hot, the level
could be higher than the cold fill
line. If the coolant is below the cold
fill line when the engine is hot, there
could be a leak in the cooling
system.
If the coolant is low, add the coolant
or take the vehicle to your dealer for
service.
How to Add Coolant to the
Coolant Surge Tank
{Warning
Spilling coolant on hot engine
parts can burn you. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Vehicle Care 245
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If coolant is needed, add the proper
DEX-COOL coolant mixture directly
to the surge tank, but be sure the
cooling system is cool before this
is done.
1. When the cooling system, including the coolant surge
tank pressure cap and upper
radiator hose, is no longer hot,
remove the pressure cap.
Turn the pressure cap slowly
counterclockwise about
one-quarter turn and then stop.
If a hiss is heard, wait for that
to stop. A hiss means there is
still some pressure left.
2. Keep turning the pressure cap slowly, and remove it.
3. Fill the coolant surge tank with the proper mixture until the
level inside stabilizes at the
cold fill line on the front of the
surge tank.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until the
upper radiator hose can be felt
getting hot. Any time during
this procedure, 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 cold fill line on the coolant
surge tank.
5. Replace the pressure cap tightly.
6. Verify coolant level after the engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1−6.
If the coolant still is not at the
proper level when the system
cools down again, see your
dealer.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
246 Vehicle Care
Cooling System (Aero
Panel)
The aero panel enhances
aerodynamic efficiency and
improves fuel economy.
Remove the aero panel and bracket
to improve engine cooling and air
conditioning performance when
driving aggressively or in hot
weather.
To remove the aero panel and
bracket:
Stingray Shown, Grand Sport, Z06,and ZR1 Similar
1. Press up on the two indents at the bottom and lift the aero
panel off the bracket.2. Unscrew the two fasteners thatsecure the bracket.
3. Gently pull the bracket away from the grille.
To replace the bracket and aero
panel: 1. Position the bracket over the grille.
2. Secure the bracket by pushing the two fasteners into place.
3. Snap the aero panel into place.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Vehicle Care 247
Cooling System
(Intercooler on LT4 and
LT5 Engines)
Engine performance can be greatly
reduced when the intercooler
system is not completely full. If there
is a decrease in engine
performance, or if the intercooler
system has experienced a loss of
coolant, see your dealer.
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. SeeEngine
Coolant Temperature Gauge 0110.
The vehicle may also display a
message on the Driver Information
Center (DIC).
If the decision is made not to lift the
hood but to get service help right
away, see Roadside Assistance
Program 0334. If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fan is running. If the engine
is overheating, the fan should be
running. If it is not, do not continue
to run the engine, and have the
vehicle serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
If Steam Is Coming from the
Engine
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
(Continued)
Warning (Continued)
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If Steam Is Coming from the
Engine Compartment with no
Overheat Warning
The hood vent opening, if equipped,
will allow water from rain and car
washes to enter the engine
compartment and contact hot
surfaces. If steam is coming from
the hood vent opening with no
accompanying overheat warning, no
service is needed.
If No Steam Is Coming from
the Engine
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be