2021 CHEVROLET CORVETTE C8 wheel

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
214 Driving and Operating
three seconds (height and time will vary by
vehicle). The Front Lift System will allow
you to lift the front of the vehicle to enter a
driveway, driving over curbs, speed bumps
or onto ramps or a trailer.
To use the Front Lift System, press the
button on the center console to raise or
lower the vehicle. This feature can be
operated at speeds up to 38 km/h (24 mph)
when the engine is running. The system
functions based on the vehicle’s state or
operating mode:
.The system will not raise up when the
doors are open.
.The system can be raised or lowered by
the pushbutton, when the vehicle is in
RUN or in ACC mode.
.If the vehicle is in the raised position and
is driven at speeds above 38 km/h
(24 mph), it will automatically lower.
.If the vehicle is turned off, it will
automatically lower.
.If a vehicle door is opened during
lowering, the movement will pause for
15 seconds then continue to lower, but at
a slower rate.
The front height can be raised automatically
using GPS navigation in the vehicle. The
vehicle will automatically lift in up to 1,000
programmable locations. Once the button is
pushed, a notification will appear on the
Driver Information Center (DIC) and ask the
driver if they would like to “Remember”the
location. The driver can select this function
through the steering wheel controls, see
Steering Wheel Controls 074. The driver can
also delete stored locations for the
automatic lift. If the vehicle is raised
automatically using GPS, it will
automatically lower once the vehicle is
located about 60 meters (197 feet) from the
programmed location. Drivers can disable
this function by turning off GPS location
through their vehicle Front Lift System will
still operate, but only by using the pushbutton command, and the
“Auto Lift
Location Remembered” confirmation
message will not display.
The Front Lift System can also be used in
accessory mode. Put the vehicle in ACC/
ACCESSORY mode, then press and hold the
button on the center console for 10
consecutive seconds to automatically raise
the vehicle.
The DIC may display the message “Lift
System Unavailable” if the following occur:
.Any doors are ajar.
.The hood is open.
.The vehicle is moving over 38 km/h
(24 mph).
.Too many lift requests within a short
period.
The Front Lift System should not be used to
service the vehicle. Do not place anything or
body parts under the vehicle while lifted.
See Recommended Fluids and Lubricants
0 301.
Competitive Driving Mode
If equipped, Competitive Driving Mode, PTM,
and Launch Control are systems designed to
allow increased performance while
accelerating and/or cornering. This is

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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216 Driving and Operating
The following is a DIC display description
and the recommended usage of each mode:
Performance Traction–Wet
.Intended for all driver skill levels.
.Wet or damp conditions only —not
intended for use in heavy rain or standing
water.
.StabiliTrak/ESC is on and engine power is
reduced based on conditions.
Performance Traction –Dry
.For use by less experienced drivers or
while learning a new track.
.Dry conditions only.
.StabiliTrak/ESC is on and engine power is
slightly reduced.
Performance Traction –Sport
.For use by drivers who are familiar with
the track.
.Dry conditions only.
.Requires more driving skill than mode 2.
.StabiliTrak/ESC is on and more engine
power is available than in mode 2.
Performance Traction –Race 1
.For use by drivers who are familiar with
the track.
.Dry conditions only.
.Requires more driving skill than modes 2
or 3.
.StabiliTrak/ESC is off and available engine
power is the same as mode 3.
Performance Traction –Race 2
.For use by experienced drivers who are
familiar with the track.
.Dry conditions only.
.Requires more driving skill than in other
modes.
.StabiliTrak/ESC is off and engine power is
available for maximum cornering speed.
Press and release
@to turn off PTM and
return to the TCS and StabiliTrak/ESC
systems. The traction off light
iand
StabiliTrak Off light
@will go out.
Launch Control (Sport and Track
Mode Only)
A Launch Control feature is available, within
Competitive Driving Mode or PTM, on all
vehicles to allow the driver to achieve high
levels of vehicle acceleration in a straight
line. Launch Control is a form of TCS that
manages tire spin, and transmissions clutch,
while launching the vehicle. This feature is intended for use during closed course race
events where consistent zero to
60 and quarter mile times are desirable.
Launch Control is only available when the
following criteria are met:
.Competitive Driving Mode or any of the
PTM Modes are selected (if equipped).
.The vehicle is not moving.
.The wheels and steering wheel are
pointing straight.
Launching the Vehicle
.Ensure the vehicle is in Competitive
Driving Mode or any of the PTM modes.
.The brake pedal must be firmly pressed
to the floor, equivalent to a panic brake
event.
.While maintaining the brake pedal, the
accelerator pedal is rapidly applied to
wide open throttle. (If the vehicle rolls
due to wide open throttle, release the
throttle, press the brake pedal more
firmly, and re-apply the accelerator to
wide open throttle.)
The Launch Control feature will initially limit
engine speed as the driver rapidly applies
the accelerator pedal to wide open throttle.
Allow the engine rpm’s to stabilize.
A smooth, quick release of the brake pedal,

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 217
while maintaining the fully pressed
accelerator pedal, will manage tire slip and
transmissions clutch. After the vehicle is
launched, the system continues in
Competitive Driving Mode or PTM.
Competitive Driving Mode, PTM, and Launch
Control are systems designed for a closed
course race track and not intended for use
on public roads. The systems are not
intended to compensate for lack of driver
experience or familiarity with the race track.
Caution
The new vehicle break-in period should be
completed before using the launch
control feature, otherwise performance
will be limited and damage may occur to
the powertrain/engine. SeeNew Vehicle
Break-In 0190.
Limited-Slip Differential
(without Z51)
The mechanical limited-slip differential can
give more traction on snow, mud, ice, sand,
or gravel. It works like a standard axle most
of the time, but when traction is low, this
feature allows the drive wheel with the most traction to move the vehicle. See
Competitive Driving Mode
0214 and
Maintenance Schedule 0293.
Limited-Slip Differential (with Z51)
The Electronic Limited-Slip Differential (eLSD)
is a hydraulically actuated clutch system
inside the transaxle. It can infinitely vary
the clutch engagement between 0 and
2250 N*m (1659 lb-ft) of breakaway torque
between the rear wheels. When necessary it
responds from open to full engagement in
fractions of a second. Smaller clutch
adjustments happen even faster.
The eLSD:
.Uses the vehicle sensors and driver inputs
to determine the optimum amount of
clutch engagement for the conditions.
.Improves traction while cornering by
changing the engagement to achieve a
balance between directional control and
acceleration.
.Provides optimal engagement for
high-speed control and stability without
affecting precise steering and turn-in.
.Improves vehicle stability during spirited
driving and evasive maneuvers. It is fully
integrated with the Active Handling and
Performance Traction Management (PTM)
systems (if equipped).
There are unique calibrations based on the
Traction Control System (TCS) setting. eLSD
modes change automatically when the
traction control button is pressed. No unique
input from the driver is required.
.Mode 1 is the standard mode when the
vehicle is started. It provides a touring
calibration with an emphasis on vehicle
stability. Mode 1 is also used in PTM
Wet mode.
.Mode 2 is engaged when both TCS and
StabiliTrak are turned off. This calibration
provides more nimble corner turn-in, and
is biased for better traction out of
corners.
.Mode 3 is engaged when PTM is engaged
in Dry, Sport 1 & 2, and Race modes. This
is a nimble calibration with similar
functionality as eLSD Mode 2, however, it
is integrated to work with PTM.
.Mode 4 is engaged when TCS is selected
off, but StabiliTrak remains on. Vehicle
stability is still the priority, while allowing
for optimized traction out of corners.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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218 Driving and Operating
Cruise Control
With cruise control, a speed of about
40 km/h (25 mph) or more can be
maintained without keeping your foot on
the accelerator. Cruise control does not work
at speeds below about 40 km/h (25 mph).
{Warning
Cruise control can be dangerous where
you cannot drive safely at a steady
speed. Do not use cruise control on
winding roads or in heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could lose
control. Do not use cruise control on
slippery roads.
If the Traction Control System (TCS) begins
to limit wheel spin while you are using
cruise control, the cruise control
automatically disengages. See Traction
Control/Electronic Stability Control 0205.
When road conditions allow for using safely
again, cruise control can be turned back on. If the brakes are applied, cruise control
disengages.
Cruise control will disengage if either TCS or
StabiliTrak/Electronic Stability Control (ESC)
is turned off.
1:
Press to turn cruise control on or off.
A white indicator comes on in the
instrument cluster when cruise is turned on.
+RES : If there is a set speed in memory,
press briefly to resume to that speed or
press and hold to accelerate. If cruise control
is already engaged, use to increase vehicle
speed. SET–
:Press briefly to set the speed and
activate cruise control. If cruise control is
already engaged, use to decrease vehicle
speed.
*: Press to disengage cruise control
without erasing the set speed from memory.
The speedometer reading can be displayed
in either English or metric units. See
Instrument Cluster 079. The increment
value used depends on the units displayed.
Setting Cruise Control
If
1is on when not in use, SET– or +RES
could get pressed and go into cruise when
not desired. Keep
1off when cruise is not
being used.
1. Press
1to turn the cruise system on.
2. Get up to the desired speed.
3. Press and release SET– on the steering
wheel.
4. Remove foot from the accelerator.
The cruise control indicator on the
instrument cluster turns green after cruise
control has been set to the desired speed.
See Instrument Cluster 079.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
230 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 231
California Proposition 65 Warning . . . . . 231
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 231
Accessories and Modifications . . . . . . . . . 231
Lifting the Vehicle . . . . . . . . . . . . . . . . . . . . . 232
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 233
Underhood Compartment Overview . . . 234
Engine Compartment Overview . . . . . . . . 235
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Engine Oil Life System . . . . . . . . . . . . . . . . . 241
Dual Clutch Transmission Fluid . . . . . . . . 241
Dual Clutch Transmission Fluid Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Engine Air Filter Life System . . . . . . . . . . 242
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 243
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 245
Engine Overheating . . . . . . . . . . . . . . . . . . . 248
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Battery - North America . . . . . . . . . . . . . . . 251 Park Brake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Wiper Blade Replacement . . . . . . . . . . . . . 252
Windshield Replacement . . . . . . . . . . . . . . . 253
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 254
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Electrical System
Electrical System Overload . . . . . . . . . . . . 254
Fuses and Circuit Breakers . . . . . . . . . . . . . 255
Instrument Panel Fuse Block . . . . . . . . . . . 255
Rear Compartment Fuse Block . . . . . . . . . 258
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 261
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . . . . 263
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . 263
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 263
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 264
Tire Terminology and Definitions . . . . . . 265 Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Tire Pressure Monitor System . . . . . . . . . 269
Tire Pressure Monitor Operation . . . . . . 270
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 272
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 272
When It Is Time for New Tires . . . . . . . . 273
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 274
Different Size Tires and Wheels . . . . . . . . 275
Uniform Tire Quality Grading . . . . . . . . . . 275
Wheel Alignment and Tire Balance . . . . 277
Wheel Replacement . . . . . . . . . . . . . . . . . . . 277
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 278
Jump Starting
Jump Starting - North America . . . . . . . . 278
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 281
Recreational Vehicle Towing . . . . . . . . . . . 283
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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232 Vehicle Care
Damage to vehicle components resulting
from modifications or the installation or use
of non-GM certified parts, including control
module or software modifications, is not
covered under the terms of the vehicle
warranty and may affect remaining
warranty coverage for affected parts.
GM Accessories are designed to complement
and function with other systems on the
vehicle. See your dealer to accessorize the
vehicle using genuine GM Accessories
installed by a dealer technician.
Also, seeAdding Equipment to the
Airbag-Equipped Vehicle 060.
Lifting the Vehicle
{Warning
Lifting a vehicle can cause an injury. The
vehicle can slip off the jack and roll over
you or other people. You and they could
be badly injured. Find a level place to lift
your vehicle. To help prevent the vehicle
from moving:
1. Set the parking brake firmly.
2. Put the transmission in P (Park). (Continued)
Warning (Continued)
3. Turn off the engine.
To be even more certain the vehicle will
not move, put blocks in front of and
behind the wheels.
{Warning
Getting under a vehicle when it is lifted
on a jack is dangerous. If the vehicle slips
off the jack, you could be badly injured
or killed. Never get under a vehicle when
it is supported only by a jack.
{Warning
Raising the vehicle with the jack
improperly positioned can damage the
vehicle or the vehicle may fall and cause
injury to you or others.
If a jack is used to lift the vehicle, follow the
instructions that came with the jack, and be
sure to use the correct lifting points to
avoid damaging the vehicle.
Caution
Lifting the vehicle improperly can damage
it and result in costly repairs not covered
by the vehicle warranty. To lift the
vehicle properly and prevent vehicle
damage:
.Be sure to place a block or pad
between the jack and the vehicle.
.Lift only in the areas shown in the
following illustrations.
For additional information, see your
dealer and the service manual.
Caution
The front jack pads must not contact the
rocker panels, the front fenders, or the
floor pan. If they do, damage may occur.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 241
skin and nails with soap and water, or a
good hand cleaner. Wash or properly
dispose of clothing or rags containing used
engine oil. See the manufacturer's warnings
about the use and disposal of oil products.
Used oil can be a threat to the environment.
If you change your own oil, drain all the oil
from the filter before disposal. Never dispose
of oil by putting it in the trash or pouring it
on the ground, into sewers, or into streams
or bodies of water. Recycle it by taking it to
a place that collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer that indicates
when to change the engine oil and filter.
This is based on a combination of factors
which include engine revolutions, engine
temperature, and miles driven. Based on
driving conditions, the mileage at which an
oil change is indicated can vary
considerably. For the oil life system to work
properly, the system must be reset every
time the oil is changed.
This vehicle has a racetrack-ready dry sump
engine lubrication system. This high
performance system operates differentlythan a standard engine lubrication system
and requires a special procedure when
changing the engine oil and filter. See
Engine Oil
0238.
When the system has calculated that oil life
has been diminished, it indicates that an oil
change is necessary. A CHANGE ENGINE OIL
SOON message comes on. Change the oil as
soon as possible within the next 1 000 km
(600 mi). It is possible that, if driving under
the best conditions, the oil life system may
not indicate that an oil change is necessary
for up to a year. The engine oil and filter
must be changed at least once a year and,
at this time, the system must be reset. Your
dealer has trained service people who will
perform this work and reset the system.
It is also important to check the oil regularly
over the course of an oil drain interval and
keep it at the proper level.
If the system is ever reset accidentally, the
oil must be changed at 5 000 km (3,000 mi)
since the last oil change. Remember to reset
the oil life system whenever the oil is
changed.
How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is
changed so that the system can calculate
the next engine oil change. To reset the
system: 1. Scroll through the DIC Info Pages menu until the remaining Engine Oil
percentage is displayed. See Driver
Information Center (DIC) 092.
2. Press and hold the thumbwheel on the DIC while the Oil Life display is active.
The oil life will change to 100%.
If the CHANGE ENGINE OIL SOON message
comes back on when the vehicle is started,
the engine oil life system has not reset.
Repeat the procedure.
Dual Clutch Transmission Fluid
How to Check Dual Clutch Transmission
Fluid
It is not necessary to check the transmission
fluid level. A transmission fluid leak is the
only reason for fluid loss. If a leak occurs,
take the vehicle to the dealer and have it
repaired as soon as possible.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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242 Vehicle Care
The vehicle is not equipped with a
transmission fluid level dipstick. There is a
special procedure for checking and changing
the transmission fluid. Because this
procedure is difficult, this should be done at
the dealer. Contact the dealer for additional
information or the procedure can be found
in the service manual. To purchase a service
manual, seePublication Ordering
Information 0316.
Caution
Use of the incorrect transmission fluid
may damage the vehicle, and the
damage may not be covered by the
vehicle warranty. Always use the correct
transmission fluid. See Recommended
Fluids and Lubricants 0301.
Change the fluid and filter at the proper
intervals. See Maintenance Schedule 0293.
Be sure to use the correct fluid. See
Recommended Fluids and Lubricants 0301.
Dual Clutch Transmission Fluid Life
System
When to Change the Dual Clutch
Transmission Fluid
This vehicle has a computer that indicates
when to change the transmission fluid. This
is based on a combination of factors which
include temperature and miles driven. Based
on driving conditions, the mileage at which
a fluid change is indicated can vary
considerably. For the fluid life system to
work properly, the system must be reset
every time the fluid is changed. When the
system has calculated that fluid life has
been diminished, it indicates that a fluid
change is necessary. A CHANGE
TRANSMISSION FLUID SOON message comes
on. Change the fluid as soon as possible
within the next 1 000 km (600 mi). Failure
to change transmission fluid at required
intervals could lead to suboptimal
transmission performance. Your dealer has
trained service technicians who will change
the fluid and reset the system. If the system
is ever reset accidentally, the fluid must be
changed at 72 000 km (45,000 mi) since the
last fluid change.
How to Reset the Dual Clutch
Transmission Fluid Life System
Reset the system whenever the transmission
fluid is replaced so that the system can
calculate the next transmission fluid change.
To reset:
1. Place the vehicle in P (Park).
2. Select the Oil & Fluid Life page under the Maintenance DIC menu. See Driver
Information Center (DIC) 092.
3. Press the thumbwheel under the Oil & Fluid Life page to move to the Reset/
Disable display area. Select Reset
Transmission Fluid with the thumbwheel
scroll then press the thumbwheel. Then
press Yes to confirm the reset.
4. When the Transmission Fluid Life System is successfully reset, 100% Transmission
Fluid Life will be displayed.
Engine Air Filter Life System
If equipped, this feature provides the engine
air filter’s remaining life and best timing for
a change. The timing to change an engine
air filter depends on driving and
environmental conditions.