engine overheat CHEVROLET CORVETTE 2024 User Guide

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
Vehicle Care 257
Caution
If the air cleaner/filter is off, dirt can
easily get into the engine, which
could damage it. Always have the air
cleaner/filter in place when driving.
Cooling System (Engine)
The engine cooling system allows the
engine to maintain the correct working
temperature. Vehicles equipped with
Electrified Propulsion (E-Ray) have additonal
cooling systems. See Cooling System
(Electrified Propulsion) later in this section.
E-Ray Convertible Shown, Stingray
Convertible and Z06 Convertible Similar
E-Ray Coupe Shown, Stingray Coupe and Z06 Coupe Similar
1. Engine Cooling Fans (Out of View)
2. Engine Coolant Surge Tank withPressure Cap
3. High Voltage Battery Coolant Reservoir (E-Ray Only).
{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 0320.
The fluid requires changing at certain
intervals. See Maintenance Schedule 0316.
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 0261.
What to Use
{Warning
Plain water, or other liquids such as
alcohol, can boil before the proper
coolant mixture will. With plain water or
(Continued)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
258 Vehicle Care
Warning (Continued)
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.
.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
Be sure the cooling system is cool and that
the vehicle is on a level surface.
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
0 261. The surge tank is in the engine
compartment. See
Engine Compartment
Overview 0238.
When the engine is cold, the coolant level
should be at the COLD FILL indicator in the
coolant surge tank.
When the engine is hot, the level could be
higher than the COLD FILL indicator. If the
coolant is below the COLD FILL indicator
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.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
260 Vehicle Care
7. Verify coolant level after the engine isshut off and the coolant is cold.
If necessary, repeat coolant fill procedure
Steps 3−7.
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.
Cooling System (Electrified
Propulsion)
The E-Ray is equipped with Electrified
Propulsion and cooling systems for the
Traction Power Inverter Module (TPIM) and
the High Voltage Battery located in the
Engine Compartment, see Engine
Compartment Overview 0238. The TPIM and
the high voltage battery cooling system
reservoirs have tamper- resistant pressure
caps. The coolant should only be serviced by
a qualified technician.
Power Electronic/Traction Power Inverter
Module (TPIM) Cooling System
The Power Electronic Cooling System
reservoir is located in under the front hood.
Rechargeable Energy Storage System
(RESS)/High Voltage Battery Cooling
System
The High Voltage Battery Cooling System
reservoir is located in the rear hatch.
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.
For vehicles equipped with Electrified
Propulsion (E-Ray), if ambient temperatures
are anticipated below −25 °C (−13 °F) for the
high voltage coolant systems, make sure to
use premix 50/50 DEX-COOL and de-ionized
water. 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.
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.
Checking Coolant
It is not necessary to regularly check coolant
unless a leak is suspected, or an unusual
noise is heard. A coolant loss could indicate
a problem. Have it inspected and repaired

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
Vehicle Care 261
by your dealer. The high voltage cooling
system reservoirs have tamper- resistant
pressure caps. The coolant should only be
serviced by a qualified technician.
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 087. The
vehicle may also display a message on the
Driver Information Center (DIC).
If the decision is made not to lift the hatch
but to get service help right away, see
Roadside Assistance Program 0332.
If the decision is made to lift the hatch,
make sure the vehicle is parked on a level
surface.
Then check to see if the engine cooling fans
are running. There are two cooling fans
located in the front (one at each corner) and
two cooling fans in the rear (one on each
side of the engine). If the engine is
overheating, the fans should be running.
If they are 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 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
Water from rain and car washes could enter
the engine compartment and contact hot
surfaces. If steam is coming from the engine
compartment 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 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 engine coolant temperature gauge is
no longer in the shaded area or an overheat
warning no longer displays, the vehicle can
be driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a safe
vehicle distance from the vehicle in front.
If the warning does not come back on,

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
286 Vehicle Care
UTQGS (Uniform Tire Quality Grading
Standards)
:A tire information system
that provides consumers with ratings
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
See Uniform Tire Quality Grading 0295.
Vehicle Capacity Weight
:The number
of designated seating positions
multiplied by 68 kg (150 lbs) plus the
rated cargo load. See Vehicle Load
Limits 0174.
Vehicle Maximum Load on the Tire
:
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Vehicle Placard
:A label permanently
attached to a vehicle showing the
vehicle's capacity weight and the
original equipment tire size and
recommended inflation pressure. See
“Tire and Loading Information Label”
under Vehicle Load Limits 0174.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
{Warning
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
.Tire overloading and overheating,
which could lead to a blowout
.Premature or irregular wear
.Poor handling
.Reduced fuel economy for
internal combustion engine
vehicles
.Reduced range for electric vehicles
(Continued)
Warning (Continued)
Overinflated tires, or tires that have
too much air, can result in:
.Unusual wear
.Poor handling
.Rough ride
.Needless damage from road
hazards
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity. See Vehicle Load Limits 0174.
How the vehicle is loaded affects
vehicle handling and ride comfort.
Never load the vehicle with more
weight than it was designed to carry.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
352 Index
Door (cont'd)Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 328
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . 191
Driver
Assistance Systems, Advanced . . . . . . . . . 214
Information Center (DIC) . . . . . . . . . . . . . . . . 99
Mode Control . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Mode Control Light . . . . . . . . . . . . . . . . . . . . . 96
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 218
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 156
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Hill and Mountain Roads . . . . . . . . . . . . . . . 171
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . . 173
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 159
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 159
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Track Events and Competitive . . . . . . . . . . 160
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 174
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Dual
Automatic Climate Control System . . . . 150
Clutch Transmission . . . . . . . . . . . . . . . . . . . . 184
Clutch Transmission Fluid . . . . . . . . . . . . . . 253
Clutch Transmission Fluid Life
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Dual Clutch Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 187
E
ElectricBrake Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Parking Brake Light . . . . . . . . . . . . . . . . . . . . . 92
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 230
System Overload . . . . . . . . . . . . . . . . . . . . . . 272
Electrical System Fuses and Circuit Breakers . . . . . . . . . . . . . 273
Instrument Panel Fuse Block . . . . . . . . . . . 273
Rear Compartment Fuse Block . . . . . . . . . 276
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342 Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 255
Air Filter Life System . . . . . . . . . . . . . . . . . . 254
Check Light (Malfunction Indicator) . . . . . 90
Compartment Overview . . . . . . . . . . . . . . . . 238
Coolant Temperature Gauge . . . . . . . . . . . . 87
Coolant Temperature Warning Light . . . . 96
Cooling System . . . . . . . . . . . . . . . . . . . 257, 260
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 328
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 252
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 97
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 106
Running While Parked . . . . . . . . . . . . . . . . . 184
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Engine Compartment Lamp . . . . . . . . . . . . . . . 114
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 339
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . .183
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .52
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . 109
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . 110
Lighting Battery Saver . . . . . . . . . . . . . . . . . . 115

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17272984) - 2024 - CRC - 2/20/23
356 Index
Navigation (cont'd)Using the System . . . . . . . . . . . . . . . . . . . . . . 125
Net, Convenience . . . . . . . . . . . . . . . . . . . . . . . . . .73
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . . 177
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246, 249
Engine Oil Life System . . . . . . . . . . . . . . . . . 252
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Older Children, Restraints . . . . . . . . . . . . . . . . . 62
Online Account . . . . . . . . . . . . . . . . . . . . . . . . . . 332
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340 Additional Information . . . . . . . . . . . . . . . . . 343
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 342
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 261
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 4
P
Panel, Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Park
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215, 217
Shifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 182
Parking Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Over Things That Burn . . . . . . . . . . . . . . . . . 182
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . . . . . . 215
Passenger
Airbag Status Indicator . . . . . . . . . . . . . . . . . 89
Compartment Air Filter . . . . . . . . . . . . . . . . 153
Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . 57
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . 94
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Performance Data Recorder (PDR) . . . . . . . . . . . . . . . . . . . 130
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Transmission Active . . . . . . . . . . . . . . . . . . . . . 93 Phone
Apple CarPlay and Android Auto . . . . . . . 140
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Power Indicator Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 87
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Protection, Battery . . . . . . . . . . . . . . . . . . . . . . 114
Retained Accessory (RAP) . . . . . . . . . . . . . . . 181
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 39
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . 51
Privacy
Vehicle Data Recording . . . . . . . . . . . . . . . . 339
Problems with Route Guidance . . . . . . . . . . .128
Program Courtesy Transportation . . . . . . . . . . . . . . . 334
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 227
Proposition 65 Warning California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . . . . . 299
Publication Ordering Information . . . . . . . . 337