2019 CHEVROLET CORVETTE coolant temperature

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 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

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
248 Vehicle Care
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
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, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Washer Fluid
What to Use
When the vehicle needs windshield
washer fluid, be sure to read the
manufacturer instructions before
use. If the vehicle will be operating
in an area where the temperature
may fall below freezing, use a fluid
that has sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See
Engine
Compartment Overview 0225.
Caution
.
Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
. Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
(Continued)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
358 Index
Connected Services (cont'd)Diagnostics . . . . . . . . . . . . . . . . . . . 355
Navigation . . . . . . . . . . . . . . . . . . . . 352
Connections
Connected Services . . . . . . . . . . 353
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 198
Control of a Vehicle . . . . . . . . . . . . . 159
Convenience Net . . . . . . . . . . . . . . . . 97
Convertible Top . . . . . . . . . . . . . . . . . . 52
Convex Mirrors . . . . . . . . . . . . . . . . . . 44
Coolant Engine Temperature Gauge . . .110
Engine Temperature
Warning Light . . . . . . . . . . . . . . . .118
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . 151
Cooling System . . . . . . .242, 246, 247
Courtesy Lamps . . . . . . . . . . . . . . . . 143
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 336
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Cruise Control . . . . . . . . . . . . . . . . . . 207 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Cupholders . . . . . . . . . . . . . . . . . . . . . . 95
Customer Assistance . . . . . . . . . . . 333 Offices . . . . . . . . . . . . . . . . . . . . . . . . 332 Customer Assistance (cont'd)
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 333
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . . . 339
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 330
D
Damage Repair, Collision . . . . . . . 337
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 343
OnStar . . . . . . . . . . . . . . . . . . . . . . . 343
Data Recorder Performance . . . . . . . . . . . . . . . . . . 145
Data Recorders, Event . . . . . . . . . 342
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 140
Defensive Driving . . . . . . . . . . . . . . . 159
Delayed Locking . . . . . . . . . . . . . . . . . 37
Diagnostics Connected Services . . . . . . . . . . 355
Differential, Limited-Slip . . . . . . . . 207
Distracted Driving . . . . . . . . . . . . . . . 158 Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 120
Delayed Locking . . . . . . . . . . . . . . . . 37
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Locks . . . . . . . . . . . . . . . . . . . . 36
Drive Belt Routing, Engine . . . . . . 329
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 121
Driver Mode Control . . . . . . . . . . . . 200
Driving Competitive . . . . . . . . . . . . . . . . . . . 203
Defensive . . . . . . . . . . . . . . . . . . . . . 159
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 159
For Better Fuel Economy . . . . . . . 24
Hill and Mountain Roads . . . . . . 173
If the Vehicle is Stuck . . . . . . . . . 175
Loss of Control . . . . . . . . . . . . . . . 161
Off-Road Recovery . . . . . . . . . . . 160
Track Events and
Competitive . . . . . . . . . . . . . . . . . 161
Vehicle Load Limits . . . . . . . . . . . 175
Wet Roads . . . . . . . . . . . . . . . . . . . 172
Winter . . . . . . . . . . . . . . . . . . . . . . . . 173
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 151

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Index 359
E
Electric Parking Brake . . . . . . . . . . 195
Electric Parking Brake Light . . . . 116
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 216
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 259
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 258
Overload . . . . . . . . . . . . . . . . . . . . . 258
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 262
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . 118
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 346
Engine Air Cleaner/Filter . . . . . . . . . . . . . 239
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . .113
Compartment Overview . . . . . . . 225
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .110
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . .118
Cooling System . . . . . 242, 246, 247
Drive Belt Routing . . . . . . . . . . . . 329
Exhaust . . . . . . . . . . . . . . . . . . . . . . 186 Engine (cont'd)
Oil Life System . . . . . . . . . . . . . . . 237
Oil Pressure Light . . . . . . . . . . . . .119
Overheating . . . . . . . . . . . . . . . . . . 247
Power Messages . . . . . . . . . . . . . 128
Running While Parked . . . . . . . . 187
Starting . . . . . . . . . . . . . . . . . . . . . . . 182
Entry Lighting . . . . . . . . . . . . . . . . . . . 143
Event Data Recorders . . . . . . . . . . 342
Exit Lighting . . . . . . . . . . . . . . . . . . . . 143
Extended Parking . . . . . . . . . . . . . . . 186
Extender, Seat Belt . . . . . . . . . . . . . . 72
Exterior Lamp Controls . . . . . . . . . 139
Exterior Lamps Off Reminder . . . 139
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 144
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . 239
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 140
Flashers, Hazard Warning . . . . . . 142
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 286
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 309
Fluid Automatic Transmission . . . . . . 238 Fluid (cont'd)
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 250
Washer . . . . . . . . . . . . . . . . . . . . . . . 248
Folding Mirrors . . . . . . . . . . . . . . . . . . 45
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 340
Front Air Dam . . . . . . . . . . . . . . . . . . 179
Front Seats Heated and Ventilated . . . . . . . . . . 65
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 213
Economy Driving . . . . . . . . . . . . . . . 24
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 215
Filling the Tank . . . . . . . . . . . . . . . 214
Foreign Countries . . . . . . . . . . . . 213
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 109
Low Fuel Warning Light . . . . . . . .119
Management, Active . . . . . . . . . . 185
Prohibited Fuels . . . . . . . . . . . . . . 213
Recommended . . . . . . . . . . 212, 213
Top Tier . . . . . . . . . . . . . . . . . . . . . . 212
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 259
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 262

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
360 Index
G
Garage Door Opener . . . . . . . . . . . 135Programming . . . . . . . . . . . . . . . . . 135
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 255
Gauges Boost . . . . . . . . . . . . . . . . . . . . . . . . . .110
Engine CoolantTemperature . . . . . . . . . . . . . . . . .110
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Odometer . . . . . . . . . . . . . . . . . . . . . 108
Speedometer . . . . . . . . . . . . . . . . . 108
Tachometer . . . . . . . . . . . . . . . . . . . 108
Trip Odometer . . . . . . . . . . . . . . . . 108
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 102
General Information Service and Maintenance . . . . . 310
Towing . . . . . . . . . . . . . . . . . . . . . . . . 216
Vehicle Care . . . . . . . . . . . . . . . . . . 219
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 94
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 334
H
Hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Hazard Warning Flashers . . . . . . . 142
Head Restraints . . . . . . . . . . . . . . . . . 58
Head-up Display . . . . . . . . . . . . . . . . 123 Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 256
Automatic . . . . . . . . . . . . . . . . . . . . . 141
Bulb Replacement . . . . . . . . . . . . 257
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 140
Flash-to-Pass . . . . . . . . . . . . . . . . . 140
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 257
High-Beam On Light . . . . . . . . . . 120
High/Low Beam Changer . . . . . 140
Lamps On Reminder . . . . . . . . . 120
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Heated Mirrors . . . . . . . . . . . . . . . . . . . 45
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 151
High-Beam On Light . . . . . . . . . . . . 120
High-Speed Operation . . . . . . . . . . 275
Hill and Mountain Roads . . . . . . . . 173
Hill Start Assist (HSA) . . . . . . . . . . 197
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 67
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Hydraulic Clutch . . . . . . . . . . . . . . . . 239
I
Ignition Positions . . . . . . . . . . . . . . . 180
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 43
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 86
Information Publication Ordering . . . . . . . . . . 339
Infotainment . . . . . . . . . . . . . . . . . . . . 145
Infotainment System . . . . . . . . . . . . 343
Instrument Cluster . . . . . . . . . . . . . . 103
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . 94
Interior Rearview Mirrors . . . . . . . . . 45
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 295
K
Keyless EntryRemote (RKE) System . . . . . . . . . 27
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L
Labeling, Tire Sidewall . . . . . . . . . . 269
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . 143
Daytime Running (DRL) . . . . . . 140