2017 CHEVROLET CORVETTE coolant temperature

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9956103) - 2017 - crc - 4/28/16
Vehicle Care 239
Caution (Continued)
may be damaged and cause
engine coolant to leak. Damage
would not be covered by the
vehicle warranty.
1. Carefully lift the surge tank coolant hose (1) from both
hose retainers (3) and position
the hose to be able to remove
the screws securing the air
cleaner/filter endcap.
2. Loosen the air duct clamp (4) at the air cleaner/filter housing
endcap and move the duct out
of the way.
3. Remove the electrical connector (5) from the sensor.
4. Remove the two screws (2).
5. Turn the air cleaner/filter endcap downward and
disengage the lower endcap
mounting tabs from the lower
retention hinge features. Be
sure to insert the lower endcap
mounting tabs fully into the
housing retention hinge
features before turning the
endcap upward and replacing
the screws.
6. Inspect or replace the air cleaner/filter.
7. Reverse Steps 1–6 to replace the air cleaner/filter endcap.
8. Replace the extractor hood duct. See above.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
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 you are driving.
Cooling System (Engine)
The cooling system allows the
engine to maintain the correct
working temperature.

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242 Vehicle Care
Stingray Shown, Grand Sport andZ06 Similar
2. Unscrew the two fasteners that secure 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.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL®engine
coolant. See Recommended Fluids
and Lubricants 0316. The fluid
requires changing at certain
intervals. See Maintenance
Schedule 0307.
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 0244.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The vehicle's coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
(Continued)
Warning (Continued)
could get too hot but you would
not get the 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.
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.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 243
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants0316.
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 0244.
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
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.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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244 Vehicle Care
{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.
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 your 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 0105.
The vehicle may also display a
message on the Driver Information
Center (DIC). See Engine Cooling
System Messages 0125.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 245
If the decision is made not to lift the
hood but to get service help right
away, seeRoadside Assistance
Program 0328.
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
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

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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246 Vehicle Care
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. SeeEngine
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.
. Do not mix water with
ready-to-use washer fluid.
Water can cause the
(Continued)
Caution (Continued)
solution to freeze and
damage the washer fluid
tank and other parts of the
washer system.
. 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
Brake Wear
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Index 351
Composite Materials . . . . . . . . . . . . 182
Compressor Kit, Tire Sealant . . . 284
ConnectionsOnStar
®. . . . . . . . . . . . . . . . . . . . . . 341
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 199
Control of a Vehicle . . . . . . . . . . . . . 162
Convenience Net . . . . . . . . . . . . . . . . 92
Convertible Top . . . . . . . . . . . . . . . . . . 50 Messages . . . . . . . . . . . . . . . . . . . . 123
Convex Mirrors . . . . . . . . . . . . . . . . . . 43
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . 242
Engine Temperature Gauge . . 105
Engine TemperatureWarning Light . . . . . . . . . . . . . . . .113
Cooling System . . . . . . . . . . . . 239, 241 Engine Messages . . . . . . . . . . . . 125
Courtesy Lamps . . . . . . . . . . . . . . . . 146
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 330
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Cruise Control . . . . . . . . . . . . . . . . . . 209
Light . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Messages . . . . . . . . . . . . . . . . . . . . 124
Cupholders . . . . . . . . . . . . . . . . . . . . . . 90 Customer Assistance . . . . . . . . . . . 327
Offices . . . . . . . . . . . . . . . . . . . . . . . . 326
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 327
Customer Information Service PublicationsOrdering Information . . . . . . . . 333
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 324
D
Damage Repair, Collision . . . . . . . 331
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 337
OnStar . . . . . . . . . . . . . . . . . . . . . . . 337
Data Recorder
Performance . . . . . . . . . . . . . . . . . . 148
Data Recorders, Event . . . . . . . . . 336
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 143
Defensive Driving . . . . . . . . . . . . . . . 162
Delayed Locking . . . . . . . . . . . . . . . . . 36
Diagnostics OnStar
®. . . . . . . . . . . . . . . . . . . . . . 343
Differential, Limited-Slip . . . . . . . . 208
Distracted Driving . . . . . . . . . . . . . . . 161
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . .115 Door (cont'd)
Ajar Messages . . . . . . . . . . . . . . . 124
Delayed Locking . . . . . . . . . . . . . . . . 36
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Locks . . . . . . . . . . . . . . . . . . . . 36
Drive Belt Routing, Engine . . . . . . 323
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 115
Driver Mode Control . . . . . . . . . . . . 201
Driving
Competitive . . . . . . . . . . . . . . . . . . . 205
Defensive . . . . . . . . . . . . . . . . . . . . . 162
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 162
For Better Fuel Economy . . . . . . . 24
Hill and Mountain Roads . . . . . . 175
If the Vehicle is Stuck . . . . . . . . . 177
Loss of Control . . . . . . . . . . . . . . . 164
Off-Road Recovery . . . . . . . . . . . 163
Track Events andCompetitive . . . . . . . . . . . . . . . . . 164
Vehicle Load Limits . . . . . . . . . . . 177
Wet Roads . . . . . . . . . . . . . . . . . . . 174
Winter . . . . . . . . . . . . . . . . . . . . . . . . 176
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 154

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352 Index
E
Electric Parking Brake . . . . . . . . . . 197
Electric Parking Brake Light . . . . 110
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 217
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 255
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 254
Overload . . . . . . . . . . . . . . . . . . . . . 254
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 259
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . 112
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 340
Engine Air Cleaner/Filter . . . . . . . . . . . . . 237
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 108
Compartment Overview . . . . . . . 225
Coolant . . . . . . . . . . . . . . . . . . . . . . . 242
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 105
Coolant Temperature Warning Light . . . . . . . . . . . . . . . .113
Cooling System . . . . . . . . . . 239, 241
Cooling System Messages . . . 125 Engine (cont'd)
Drive Belt Routing . . . . . . . . . . . . 323
Exhaust . . . . . . . . . . . . . . . . . . . . . . 188
Oil Life System . . . . . . . . . . . . . . . 235
Oil Messages . . . . . . . . . . . . . . . . . 125
Oil Pressure Light . . . . . . . . . . . . .113
Overheating . . . . . . . . . . . . . . . . . . 244
Power Messages . . . . . . . . . . . . . 126
Running While Parked . . . . . . . . 189
Starting . . . . . . . . . . . . . . . . . . . . . . . 184
Entry Lighting . . . . . . . . . . . . . . . . . . . 146
Event Data Recorders . . . . . . . . . . 336
Exit Lighting . . . . . . . . . . . . . . . . . . . . 146
Extended Parking . . . . . . . . . . . . . . . 188
Extender, Safety Belt . . . . . . . . . . . . 67
Exterior Lamp Controls . . . . . . . . . 142
Exterior Lamps Off Reminder . . . 142
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 147
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 237
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 143
Flashers, Hazard Warning . . . . . . 145
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 283
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 304 Fluid
Automatic Transmission . . . . . . 236
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 247
Washer . . . . . . . . . . . . . . . . . . . . . . . 246
Folding Mirrors . . . . . . . . . . . . . . . . . . 43
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 334
Front Air Dam . . . . . . . . . . . . . . . . . . 182
Front Seats Heated and Ventilated . . . . . . . . . . 61
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Additives . . . . . . . . . . . . . . . . . . . . . 215
Economy Driving . . . . . . . . . . . . . . . 24
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 216
Filling the Tank . . . . . . . . . . . . . . . 215
Foreign Countries . . . . . . . . . . . . 215
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 103
Low Fuel Warning Light . . . . . . . .114
Management, Active . . . . . . . . . . 188
Requirements, California . . . . . 214
System Messages . . . . . . . . . . . . 126
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 254 Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 255
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 259