2015 CHEVROLET CORVETTE engine overheat

Black plate (26,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 10/31/14
10-26 Vehicle Care
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 on page 10-27.
The engine coolant surge tank is
toward the rear of the engine
compartment on the passenger side
of the vehicle. See Engine
Compartment Overview on
page 10-7.
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 a dealer for
service.
How to Add Coolant to the
Coolant Surge Tank
{Warning
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.
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn
the cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure
cap to cool.

Black plate (27,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 10/31/14
Vehicle Care 10-27
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 DEX-COOL coolant
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. Check the level in the surge tank
when the system has cooled
down. If the coolant is not at the
proper level, repeat Steps 1−4,
then reinstall the pressure cap.
If the coolant is not at the proper
level when the system cools
down again, see the dealer.{Caution
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.
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See Engine
Coolant Temperature Gauge on
page 5-15. The vehicle may also
display a message on the Driver
Information Center (DIC). See
Engine Cooling System Messages
on page 5-37.
If the decision is made not to lift the
hood but to get service help right
away, see Roadside Assistance
Program on page 13-5.

Black plate (28,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 10/31/14
10-28 Vehicle Care
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
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam Is Coming from the
Engine
{Warning
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. Just 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
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
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
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows as
necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral) and let the
engine idle.
If the temperature overheat gauge is
no longer in the shaded area or an
overheat warning no longer

Black plate (4,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 10/31/14
i-4 INDEX
Electrical SystemEngine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-40
Fuses . . . . . . . . . . . . . . . . . . . . . . 10-40
Overload . . . . . . . . . . . . . . . . . . . 10-39
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-44
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-3
Engine Air Cleaner/Filter . . . . . . . . . . . 10-20
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-18
Compartment Overview . . . . . . . 10-7
Coolant . . . . . . . . . . . . . . . . . . . . . 10-25
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 5-23
Cooling System . . . . . . 10-22, 10-24
Cooling System Messages . . . 5-37
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-27
Oil Life System . . . . . . . . . . . . . 10-18
Oil Messages . . . . . . . . . . . . . . . . . 5-37
Overheating . . . . . . . . . . . . . . . . 10-27 Engine (cont'd)
Power Messages . . . . . . . . . . . . . 5-38
Pressure Light . . . . . . . . . . . . . . . . 5-24
Running While Parked . . . . . . . . 9-27
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-22
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-6
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-6
Extender, Safety Belt . . . . . . . . . . 3-14
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Filter, Engine Air Cleaner . . . . . . . . . 10-20
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-4
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-70
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-92 Fluid
Automatic Transmission . . . . 10-19
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-32
Washer . . . . . . . . . . . . . . . . . . . . . 10-29
Folding Mirrors . . . . . . . . . . . . . . . . 2-20
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Air Dam . . . . . . . . . . . . . . . . . 9-20
Front Seats Heated and Ventilated . . . . . . . . . 3-7
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-54
Additives . . . . . . . . . . . . . . . . . . . . . 9-55
Economy Driving . . . . . . . . . . . . . 1-22
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-57
Filling the Tank . . . . . . . . . . . . . . . 9-56
Foreign Countries . . . . . . . . . . . . 9-55
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Low Fuel Warning Light . . . . . . . 5-25
Management, Active . . . . . . . . . . 9-26
Requirements, California . . . . . 9-55
System Messages . . . . . . . . . . . . 5-38

Black plate (8,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 10/31/14
i-8 INDEX
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . 14-6
OnStar
®Connections . . . . . . . . . . 14-4
OnStar®Emergency . . . . . . . . . . . 14-3
OnStar®Navigation . . . . . . . . . . . . 14-3
OnStar®Overview . . . . . . . . . . . . . 14-1
OnStar®Security . . . . . . . . . . . . . . 14-3
OnStar®Vehicle
Diagnostics . . . . . . . . . . . . . . . . . . 14-6
Ordering Service Publications . . . . . . . . .13-11
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Overheating, Engine . . . . . . . . . . 10-27
P
Panel, Roof . . . . . . . . . . . . . . . . . . . . 2-24
Park Shifting Into . . . . . . . . . . . . . . . . . . . 9-24
Shifting Out of . . . . . . . . . . . . . . . . 9-25
Parking . . . . . . . . . . . . . . . . . . . . . . . . 9-26 Brake and P (Park)Mechanism Check . . . . . . . . 10-36
Over Things That Burn . . . . . . . 9-26
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 5-17 Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Passenger Sensing System . . . 3-20
Perchlorate Materials Requirements, California . . . . . 10-2
Performance Data Recorder (PDR) . . . . . . . . . . . . . . . 7-1
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-45
Power Door Locks . . . . . . . . . . . . . . . . . . . 2-13
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Protection, Battery . . . . . . . . . . . . . 6-6
Retained Accessory (RAP) . . . 9-24
Seat Adjustment . . . . . . . . . . . . . . . 3-2
Windows . . . . . . . . . . . . . . . . . . . . . 2-22
Pregnancy, Using Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Privacy Vehicle Data Recording . . . . . 13-14
Program Courtesy Transportation . . . . . . 13-7
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . 10-2
R
Radio Frequency
Identification (RFID) . . . . . . . . . 13-12
Radio Frequency Statement . . . . . . . . . . . . . . . . . . . 13-12
Reading Lamps . . . . . . . . . . . . . . . . . 6-6
Rear Axle . . . . . . . . . . . . . . . . . . . . . 10-35
Rear Storage . . . . . . . . . . . . . . . . . . . 4-2
Rear Vision Camera (RVC) . . . . 9-52
Rearview Mirrors . . . . . . . . . . . . . . 2-21 Automatic Dimming . . . . . . . . . . . 2-21
Reclining Seatbacks . . . . . . . . . . . . 3-3
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . 11-12
Records Maintenance . . . . . . . . . . . . . . . . .11-15
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . . . 10-83
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . 13-5
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . 2-2, 2-3
Remote Vehicle Start . . . . . . . . . . . 2-9
Replacement Bulbs . . . . . . . . . . . 10-39