2018 CHEVROLET CORVETTE check engine light

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
Instruments and Controls 125
HUD Troubleshooting
Check that:
.Nothing is covering the
HUD lens.
. HUD brightness setting is not
too dim or too bright.
. HUD is adjusted to the proper
height.
. Polarized sunglasses are
not worn.
. Windshield and HUD lens are
clean.
If the HUD image is not correct,
contact your dealer.
The windshield is part of the HUD
system. See Windshield
Replacement 0248.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing
V. The messages that
require immediate action cannot be
cleared until that action is
performed.
All messages should be taken
seriously; clearing the message
does not correct the problem.
If a SERVICE message appears,
see your dealer.
Follow the instructions given in the
messages. The system displays
messages regarding the following
topics:
. Service Messages
. Fluid Levels
. Vehicle Security .
Brakes
. Ride Control Systems
. Driver Assistance Systems
. Cruise Control
. Lighting and Bulb Replacement
. Wiper/Washer Systems
. Doors and Windows
. Seat Belts
. Airbag Systems
. Engine and Transmission
. Tire Pressure
. Battery
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
vehicle's propulsion power is
reduced. Reduced propulsion power
can affect the vehicle's ability to
accelerate. If this message is on,
but there is no observed reduction
in performance, proceed to your
destination. The performance may
be reduced the next time the vehicle

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
194 Driving and Operating
The vehicle has an Electric Parking
Brake (EPB). The EPB can always
be activated, even if the ignition is
off. To prevent draining the battery,
avoid repeated cycles of the EPB
system when the engine is not
running.
The system has a
Yor PARK
Electric Parking Brake light, and a
8
Service Parking Brake light. See
Electric Parking Brake Light 0113
and Service Electric Parking Brake
Light 0114.
Before leaving the vehicle, check for
the
Yor PARK light to ensure that
the EPB is applied.
EPB Apply
To apply the EPB:
1. Be sure the vehicle is at a complete stop.
2. Lift up the EPB switch momentarily.
The
Yor PARK light will flash and
then stay on once the EPB is fully
applied. If the
Yor PARK light flashes continuously, then the EPB
is only partially applied or there is a
problem with the EPB. A Driver
Information Center (DIC) message
will display. Release the EPB and
try to apply it again. If the light does
not come on, or keeps flashing,
have the vehicle serviced. Do not
drive the vehicle if the
Yor PARK
light is flashing. See your dealer.
See Electric Parking Brake Light
0 113.
If the
8light is on, press the EPB
switch and hold it. Continue to hold
the switch until the
Yor PARK
light remains on. If the
8light
remains on, see your dealer.
If the EPB is applied while the
vehicle is moving, the vehicle will
decelerate as long as the switch is
pressed. If the switch is pressed
until the vehicle comes to a stop,
the EPB will remain applied.
The vehicle may automatically apply
the EPB in some situations when
the vehicle is not moving. This is normal, and is done to periodically
check the correct operation of the
EPB system.
If the EPB fails to apply, block the
rear wheels to prevent vehicle
movement.
EPB Release
To release the EPB:
1. Turn the ignition on or to ACC/ ACCESSORY.
2. Apply and hold the brake pedal.
3. Press the EPB switch momentarily.
The EPB is released when the
Y
or PARK light is off.
If the
8light is on, release the EPB
by pressing and holding the EPB
switch. Continue to hold the switch
until the
Yor PARK light is off.
If either light stays on after release
is attempted, see your dealer.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
196 Driving and Operating
Ride Control Systems
Traction Control/
Electronic Stability
Control
The vehicle has a Traction Control
System (TCS) and a StabiliTrak
system. These systems help limit
wheel spin and assist the driver in
maintaining control, especially on
slippery road conditions.
TCS activates if it senses that the
rear wheels are spinning too much
or are beginning to lose traction.
When this happens, TCS applies
the brakes to the spinning wheel
and reduces engine power (by
closing the throttle and managing
engine spark) to limit wheel spin.
StabiliTrak activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak selectively applies
braking pressure to any one of thevehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path.
If cruise control is being used when
TCS begins to limit wheel spin, the
cruise control will automatically
disengage. Cruise control may be
reengaged when road conditions
allow. See
Cruise Control 0205.
Both systems come on
automatically when the vehicle is
started and begins to move. The
systems may be heard or felt while
they are operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary
to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow.
See If the Vehicle Is Stuck 0173
and “Turning the Systems Off and
On” later in this section.The indicator light for both systems
is in the instrument cluster. This
light will:
.
Flash when TCS is limiting
wheel spin
. Flash when StabiliTrak is
activated
. Turn on and stay on when either
system is not working
If either system fails to turn on or to
activate, a message displays in the
Driver Information Center (DIC), and
dcomes on and stays on to
indicate that the system is inactive
and is not assisting the driver in
maintaining control. The vehicle is
safe to drive, but driving should be
adjusted accordingly.
If
dcomes on and stays on:
1. Stop the vehicle.

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
Vehicle Care 243
lightly applied. Brake linings should
always be replaced as complete
axle sets.
Brake Rotor Wear
Z06 and Grand Sport models may
have ceramic brake rotors. Rotors
should be visually inspected
whenever the brake pads are
replaced. Rotors also need to be
weighed before brake pads are
replaced to confirm that the rotor
mass is greater than the wear-out
mass printed on then rotor. The
rotor can be reused if the weight of
the rotor is above the mass limit.
Rotor inspection and weighing
methods can be found in the service
manual.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir
is filled with either DOT 3 or DOT 4
brake fluid as indicated on the
reservoir cap. SeeEngine
Compartment Overview 0221 for
the location of the reservoir. Checking Brake Fluid
With the vehicle in P (Park) on a
level surface, the brake fluid level
should be between the minimum
and maximum marks on the brake
fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
.
Normal brake lining wear. When
new linings are installed, the
fluid level goes back up.
. A fluid leak in the brake
hydraulic system. Have the
brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it.
Do not top off the brake fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
310 Service and Maintenance
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required. Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories.
.
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary. Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.
Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
. Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0313 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
Index 347
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 217
Accessory Power . . . . . . . . . . . . . . . 182
Active Fuel Management . . . . . . . 184
Active Rev Match . . . . . . . . . . . . . . . 191
Add-On Electrical Equipment . . . 214
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 341
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 310
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 59
Air Cleaner/Filter, Engine . . . . . . . 233
Air Conditioning . . . . . . . . . . . . . . . . 149
Air Dam, Front . . . . . . . . . . . . . . . . . . 178
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 153
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 153
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . . . 82
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 75
Passenger Sensing System . . . . 77
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 75
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . 76 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 74
Where Are the Airbags? . . . . . . . . 73
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 81
Passenger Status Indicator . . . .110
Readiness Light . . . . . . . . . . . . . . 109
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 81
System Check . . . . . . . . . . . . . . . . . . 72
Alarm Vehicle Security . . . . . . . . . . . . . . . . 41
Antilock Brake System (ABS) . . . 193 Warning Light . . . . . . . . . . . . . . . . . .114
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 292
Interior . . . . . . . . . . . . . . . . . . . . . . . . 297
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 325
Assistance Systems for Parking and Backing . . . . . . . . . . 208
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 45
Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Headlamp System . . . . . . . . . . . . 139
Transmission . . . . . . . . . . . . . . . . . 185

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11374030) - 2018 - CRC - 11/8/17
348 Index
Automatic (cont'd)Transmission Fluid . . . . . . . . . . . 232
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 187
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 247
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 245
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 142
Power Protection . . . . . . . . . . . . . 142
Battery - North America . . . . 244, 287
Blade Replacement, Wiper . . . . . 247
Boost Gauge . . . . . . . . . . . . . . . . . . . 107
Brake
Parking, Electric . . . . . . . . . . . . . . 193
System Warning Light . . . . . . . . .113
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 242 Antilock . . . . . . . . . . . . . . . . . . . . . . . 193
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 195
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 157
Break-In, New Vehicle . . . . . . . . . . 177
Bulb Replacement
Headlamp Aiming . . . . . . . . . . . . . 249
Headlamps . . . . . . . . . . . . . . . . . . . 250 Bulb Replacement (cont'd)
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 250
License Plate Lamps . . . . . . . . . 250
Buying New Tires . . . . . . . . . . . . . . . 272
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . 98
California Fuel Requirements . . . . . . . . . . . .211
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 217
California Proposition
65 Warning . . . . . . . . . .216, 244, 287,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 318
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 184
Hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Winter Driving . . . . . . . . . . . . . . . . 172
Cargo
Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . 95
Cargo Net . . . . . . . . . . . . . . . . . . . . . . . 95
Caution, Danger, and Warning . . . . 2 Center Console Storage . . . . . . . . . 94
Chains, Tire . . . . . . . . . . . . . . . . . . . . 278
Charging System Light . . . . . . . . . 111
Check
Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . 111
Child Restraints
Infants and Young Children . . . . . 84
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 88
Older Children . . . . . . . . . . . . . . . . . . 83
Securing . . . . . . . . . . . . . . . . . . . . . . . . 89
Systems . . . . . . . . . . . . . . . . . . . . . . . . 87
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 292
Interior Care . . . . . . . . . . . . . . . . . . 297
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 149
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Cluster, Instrument . . . . . . . . . . . . . 101
Clutch, Hydraulic . . . . . . . . . . . . . . . 233
Collision Damage Repair . . . . . . . 328
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . 92
Compass . . . . . . . . . . . . . . . . . . . . . . . . 98
Competition Oriented Tires . . . . . 260
Competitive Driving Mode . . . . . . 201
Composite Materials . . . . . . . . . . . . 178