2018 CHEVROLET CORVETTE check engine

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
Driving and Operating 211
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:. For vehicles which are not
FlexFuel, fuel labeled
greater than 15% ethanol by
volume, such as mid-level
ethanol blends (16 –50%
ethanol), E85, or FlexFuel.
. Fuel with any amount of
methanol, methylal, and
aniline. These fuels can
corrode metal fuel system
parts or damage plastic and
rubber parts.
. Fuel containing metals such
as methylcyclopentadienyl
manganese tricarbonyl
(MMT), which can damage
the emissions control
system and spark plugs.
(Continued)
Caution (Continued)
.Fuel with a posted octane
rating of less than the
recommended fuel. Using
this fuel will lower fuel
economy and performance,
and may decrease the life of
the emissions catalyst.
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in
states adopting California Emissions
Standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance may be
affected. The malfunction indicator
lamp could turn on and the vehicle
may not pass a smog-check test.
See Malfunction Indicator Lamp
0 111. If this occurs, return to your authorized dealer for diagnosis. If it
is determined that the condition is
caused by the type of fuel used,
repairs may not be covered by the
vehicle warranty.
Fuels in Foreign
Countries
The U.S., Canada, and Mexico post
fuel octane ratings in anti-knock
index (AKI). For fuel not to use in a
foreign country, see
“Prohibited
Fuels” inFuel 0210.
Fuel Additives
To keep fuel systems clean, TOP
TIER detergent gasoline is
recommended. See Fuel0210.
If TOP TIER detergent gasoline is
not available, one bottle of GM Fuel
System Treatment Cleaner added to
the fuel tank at every engine oil
change, can help. GM Fuel System
Treatment Cleaner is the only
gasoline additive recommended by
General Motors. It is available at
your dealer.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
Vehicle Care 215
Vehicle Care
General Information
General Information . . . . . . . . . . 216
California Proposition65 Warning . . . . . . . . . . . . . . . . . 216
California Perchlorate Materials Requirements . . . . . 217
Accessories and Modifications . . . . . . . . . . . . . . . . 217
Lifting the Vehicle . . . . . . . . . . . . 217
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . . . . . . . 220
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 220
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 221
Engine Oil . . . . . . . . . . . . . . . . . . . . 226
Engine Oil Life System . . . . . . . 231
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 232
Manual Transmission Fluid . . . 233
Hydraulic Clutch . . . . . . . . . . . . . . 233
Engine Air Cleaner/Filter . . . . . . 233
Cooling System (Engine) . . . . . 236
Cooling System (Aero Panel) . . . . . . . . . . . . . . . . . . . . . . . 239
Engine Overheating . . . . . . . . . . 240 Washer Fluid . . . . . . . . . . . . . . . . . 241
Brakes . . . . . . . . . . . . . . . . . . . . . . . 242
Brake Fluid . . . . . . . . . . . . . . . . . . . 243
Battery - North America . . . . . . 244
Rear Axle . . . . . . . . . . . . . . . . . . . . 245
Starter Switch Check . . . . . . . . . 246
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 247
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 247
Wiper Blade Replacement . . . . 247
Windshield Replacement . . . . . 248
Gas Strut(s) . . . . . . . . . . . . . . . . . . 248Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 249
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 250
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 250
LED Lighting . . . . . . . . . . . . . . . . . 250
License Plate Lamp . . . . . . . . . . 250
Electrical System
Electrical System Overload . . . 251
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 251
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 252 Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 254
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Winter Tires . . . . . . . . . . . . . . . . . . 258
Run-Flat Tires . . . . . . . . . . . . . . . . 258
Low-Profile Tires . . . . . . . . . . . . . 259
Competition Oriented Tires . . . 260
Summer Tires . . . . . . . . . . . . . . . . 261
Tire Sidewall Labeling . . . . . . . . 261
Tire Designations . . . . . . . . . . . . . 262
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 263
Tire Pressure . . . . . . . . . . . . . . . . . 266
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 267
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 267
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 268
Tire Inspection . . . . . . . . . . . . . . . . 270
Tire Rotation . . . . . . . . . . . . . . . . . 271
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 272
Buying New Tires . . . . . . . . . . . . . 272
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 274
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 274

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
222 Vehicle Care
1.Passenger Compartment Air
Filter 0153 (Out of View).
2. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 236 orCooling System (Aero
Panel) 0239.
3. Engine Compartment Fuse
Block 0252.
4. Engine Air Cleaner/Filter 0233. 5. Engine Cooling Fan (Out of
View). See Cooling System
(Engine) 0236 orCooling
System (Aero Panel) 0239.
6. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0226.
7. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0226. 8. Brake Fluid Reservoir. See
Brake Fluid 0243.
9. Clutch Master Cylinder Reservoir (If Equipped). See
Hydraulic Clutch 0233.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 241.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
224 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0226.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0226.
3. Passenger Compartment Air
Filter 0153 (Out of View).
4. Coolant Surge Tank and Pressure Cap. See Cooling
System (Engine) 0236 or
Cooling System (Aero Panel)
0 239. 5.
Engine Compartment Fuse
Block 0252.
6. Engine Air Cleaner/Filter 0233.
7. Engine Cooling Fan (Out of View). See Cooling System
(Engine) 0236 orCooling
System (Aero Panel) 0239.
8. Brake Fluid Reservoir. See Brake Fluid 0243. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0233.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 241.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
226 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0226.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0226.
3. Passenger Compartment Air
Filter 0153 (Out of View).
4. Coolant Surge Tank and Pressure Cap. See Cooling
System (Engine) 0236 or
Cooling System (Aero Panel)
0 239.
5. Engine Compartment Fuse
Block 0252.
6. Engine Air Cleaner/Filter 0233.
7. Engine Cooling Fan (Out of View). See Cooling System
(Engine) 0236 orCooling
System (Aero Panel) 0239.
8. Brake Fluid Reservoir. See Brake Fluid 0243.
9. Clutch Master Cylinder Reservoir (If Equipped). See
Hydraulic Clutch 0233. 10. Windshield Washer Fluid
Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 241.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0231.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil (Except
Z06, Grand Sport, and Stingray
with Z51)
If the ENGINE OIL LOW–ADD OIL
message displays on the Driver
Information Center (DIC), check the
engine oil level right away.
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0221 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the
engine oil level on steep grades

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
Vehicle Care 227
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when
checking a cold engine prior to
starting. Remove the dipstick
and check the level.
. If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is
warm, or at least 30 minutes if
the engine is not warm. Pull out
the dipstick, wipe it with a clean
paper towel or cloth, then push it
back in all the way. Remove it
again, keeping the tip down, and
check the level.
When to Add Engine Oil
(Except Z06, Grand Sport, and
Stingray with Z51)
If the oil is below the cross-hatched
area at the tip of the dipstick and
the engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for
an explanation of what kind of oil to
use. For engine oil crankcase
capacity, see Capacities and
Specifications 0318.
See Track Events and Competitive
Driving 0159 for additional
information on engine oil.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that you
have an oil level above the
operating range, i.e., the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
(Continued)
Caution (Continued)
operating range, the engine could
be damaged. You should drain
out the excess oil or limit driving
of the vehicle and seek a service
professional to remove the
excess amount of oil.
See Engine Compartment Overview
0 221 for the location of the engine
oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
228 Vehicle Care
Checking Engine Oil (Z06,
Grand Sport, and Stingray
with Z51)
1. Engine Oil Dipstick
2. Engine Oil Fill Cap
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground.
The engine oil dipstick handle is a
loop. The dipstick is located on the
dry sump engine oil tank. See
Engine Compartment Overview
0221 for the location of the dry
sump engine oil tank. These vehicles have a
racetrack-ready dry sump engine
lubrication system. This high
performance system operates
differently than a standard engine
lubrication system and requires a
special procedure when checking
the engine oil level. Follow this
procedure closely.
The engine oil level must be
checked when the engine is warm.
Cold oil level in the dry sump tank
may not indicate the actual amount
of oil in the system. With this
system, engine oil is contained in an
external tank, separate from the
engine. Under normal operating
conditions, the oil pan under the
engine does not store any oil. If the
vehicle has been parked for an
extended period without the engine
being started, some oil will seep
back into the oil pan, reducing the
amount of oil held in the dry sump
tank and there could be no engine
oil at all showing on the dipstick.
This is normal since the dipstick is
designed to read the engine oil level
only after the engine has run long
enough to reach normal operatingtemperature. Do not add engine oil
based on cold engine dipstick
readings. The engine oil level on the
dipstick will also be inaccurate if
checked while the engine is running.
1. To obtain an accurate engine oil level reading, warm up the
engine to at least 80 °C
(175 °F). Cold oil will not give a
correct oil level reading.
2. Once the engine is warm, turn off the engine. Checking the oil
while the engine is running will
result in an incorrect oil level
reading.
3. Check the oil level between five and 10 minutes after the
engine is shut down.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.

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Vehicle Care 229
4. Remove the dipstick from theexternal engine oil tank and
wipe it with a clean lint-free
paper towel or a cloth.
Re-insert the dipstick into the
external oil tank, pushing it all
the way in until it stops.
5. Remove the dipstick from the oil tank and read the level on
the cross-hatched area.
When to Add Engine Oil (Z06,
Grand Sport, and Stingray
with Z51)
If the oil is below the cross-hatched
area at the tip of the dipstick, add
1 L (1 qt) of the recommended oil
through the oil fill cap opening in the
oil tank and then recheck the level. See
“Selecting the Right Engine Oil”
for an explanation of what kind of oil
to use. For engine oil crankcase
capacity, see Capacities and
Specifications 0318.
See Track Events and Competitive
Driving 0159 for additional
information on engine oil.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that you
have an oil level above the
operating range, i.e., the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine could
be damaged. You should drain
out the excess oil or limit driving
of the vehicle and seek a service
professional to remove the
excess amount of oil. See
Engine Compartment Overview
0 221 for the location of the external
engine oil tank and fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back into the oil tank when through.
Changing Engine Oil and Filter
(Z06, Grand Sport, and
Stingray with Z51)
The vehicle may have a
racetrack-ready dry sump engine
lubrication system. This high
performance system operates
differently than a standard engine
lubrication system and requires a
special procedure when changing
the engine oil and filter. Follow this
procedure closely when changing
the engine oil and filter.