2022 CHEVROLET CORVETTE coolant temperature
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Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15342622) - 2022 - CRC - 5/4/21
242 Vehicle Care
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
The cooling system allows the engine to
maintain the correct working temperature.
Convertible
1. Engine Cooling Fans (Out of View)
2. Coolant Surge Tank with Pressure Cap
Coupe
1. Engine Cooling Fans (Out of View)
2. Coolant Surge Tank with Pressure Cap
{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 Lubricants0300.
The fluid requires changing at certain
intervals. See Maintenance Schedule 0292.
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 0245.
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)
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Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 243
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
0 245. The surge tank is in the engine
compartment. See
Engine Compartment
Overview 0232.
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.
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Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15342622) - 2022 - CRC - 5/4/21
Vehicle Care 245
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.
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 084. 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 0310.
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.
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Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15342622) - 2022 - CRC - 5/4/21
246 Vehicle Care
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,
continue to drive normally and have the
cooling system checked for proper fill and
function.
If the warning continues, pull over safely,
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
1. Open the hood. SeeHood017.
2. Open the cap with the washer symbol
on it. Add washer fluid until the tank
is full.
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.
.Do not mix water with ready-to-use
washer fluid. Water can cause the
solution to freeze and damage the
washer fluid tank and other parts of
the washer system.
(Continued)
Caution (Continued)
.When using concentrated washer fluid,
follow the manufacturer instructions
for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very cold.
This allows for fluid expansion if
freezing occurs, which could damage
the tank if it is completely full.
Brakes
Disc brake linings have built-in wear
indicators that make a high-pitched warning
sound when the brake linings are worn and
new linings are needed. The sound can come
and go or can be heard all the time when
the vehicle is moving, except when applying
the brake pedal firmly.
{Warning
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to a crash. When the
brake wear warning sound is heard, have
the vehicle serviced.
Page 329 of 338
Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15342622) - 2022 - CRC - 5/4/21
328 Index
Connected Services (cont'd)Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 323
Control Hill Rollback . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Traction and Electronic Stability . . . . . . . 205
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . 175
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 113
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Convertible Top . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 84
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Courtesy Transportation Program . . . . . . . . . 312
Coverage Explanations . . . . . . . . . . . . . . . . . . . . 135
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Curb View Camera . . . . . . . . . . . . . . . . . . . . . . . . 221
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 309 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Text Telephone (TTY) Users . . . . . . . . . . . . 309 Customer Information
Publications Ordering Information . . . . . 314
Customer Satisfaction Procedure . . . . . . . . . 307
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . . 313
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection Infotainment System . . . . . . . . . . . . . . . . . . . 317
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Data Recorder
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Data Recorders, Event . . . . . . . . . . . . . . . . . . . . 317
Database Coverage Explanations . . . . . . . . . . 135
Daytime Running Lamps (DRL) . . . . . . . . . . . 106
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . 175
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 325
Differential, Limited-Slip . . . . . . . . . . . . . . . . . 216
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . .174
Diversity Antenna System . . . . . . . . . . . . . . . 120
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Drive Belt Routing, Engine . . . . . . . . . . . . . . . 306
Driver
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Driver Assistance Systems . . . . . . . . . . . . . . . .218
Driver Information Center (DIC) . . . . . . . . . . . 92
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 206
Driving Better Fuel Economy . . . . . . . . . . . . . . . . . . . 174
Competitive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Hill and Mountain Roads . . . . . . . . . . . . . . 184
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 186
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . 177
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 176
Track Events and Competitive . . . . . . . . . . . 177
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 186
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Dual Clutch Transmission . . . . . . . . . . . . . . . . 195 Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 198
Dual Clutch Transmission Fluid . . . . . . . . . . . 238
Dual Clutch Transmission Fluid Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
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Index 329
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 202
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 203
Electric Parking Brake Light . . . . . . . . . . . . . . . 89
Electrical Equipment, Add-On . . . . . . . . . . . . 227
Electrical SystemFuses and Circuit Breakers . . . . . . . . . . . . . 253
Instrument Panel Fuse Block . . . . . . . . . . . 254
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Rear Compartment Fuse Block . . . . . . . . . 256
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 240
Check Light (Malfunction Indicator) . . . . . 86
Compartment Overview . . . . . . . . . . . . . . . . 232
Coolant Temperature Gauge . . . . . . . . . . . . 84
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 242
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 306
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 238
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 91
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 98
Running While Parked . . . . . . . . . . . . . . . . . 195
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 Engine Air Filter Life System . . . . . . . . . . . . . 239
Engine Compartment Lamp . . . . . . . . . . . . . . 108
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Event Data Recorders . . . . . . . . . . . . . . . . . . . . . 317
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 194
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .52
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . 105
Exterior Lamps Off Reminder . . . . . . . . . . . . 105
Exterior Lighting Battery Saver . . . . . . . . . . 109
F
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 240
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Flashers, Hazard Warning . . . . . . . . . . . . . . . . 107
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Fluid Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Dual Clutch Transmission . . . . . . . . . . . . . . 238
Dual Clutch Transmission LifeSystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Front Air Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Front Lift System . . . . . . . . . . . . . . . . . . . . . . . . . 212
Front Lift System Light . . . . . . . . . . . . . . . . . . . 88
Front Seats
Heated and Ventilated . . . . . . . . . . . . . . . . . . 44
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Economy, Driving for Better . . . . . . . . . . . 174
Filling a Portable Fuel Container . . . . . . . 226
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 225
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 225
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Management, Active . . . . . . . . . . . . . . . . . . . 194
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 224
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 224
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Fuses Fuses and Circuit Breakers . . . . . . . . . . . . . 253
Instrument Panel Fuse Block . . . . . . . . . . . 254
Rear Compartment Fuse Block . . . . . . . . . 256
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . 102Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Gauges Engine Coolant Temperature . . . . . . . . . . . . 84
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83