ECO mode CHEVROLET CORVETTE C8 2021 Owner's Guide

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Driving and Operating 203
rate of launch. Tire spin may occur with the
accelerator pedal pressed and the Traction
Control System (TCS) turned off.
This launch occurs when both of these
conditions are met:
.Vehicle speed is below 10 km/h (6 mph).
.Both the + paddle and−paddle are
released at the same time.
With the accelerator fully pressed and the
engine at the rev limiter, peak performance
only occurs if the paddles are released
within a short period of time after reaching
the rev limit (i.e., a few seconds).
Standard Exit : Engine power is reapplied to
the wheels gently to support normal vehicle
operation on public roads.
This occurs when paddles are released under
any of the these conditions:
.Vehicle speed is above 10 km/h (6 mph).
.The vehicle is in R (Reverse).
.The + paddle and −paddle are not
released at the same time.
If the vehicle was in Temporary Manual
Paddle Shift mode before entering Double
Paddle Declutch, the vehicle will return to D
(Drive) with automatic shifting upon exiting
Double Paddle Declutch.
{Warning
When exiting Double Paddle Declutch, the
vehicle may move rapidly. You could lose
control and cause a crash with nearby
people or objects. Be ready to release the
accelerator pedal or apply the brakes
immediately if the vehicle moves too
quickly. Do not use the Double Paddle
Declutch when people or objects are near.
Brakes
Electric Brake Boost
Vehicles equipped with electric brake boost
have hydraulic brake circuits that are
electronically controlled when the brake
pedal is applied during normal operation.
The system performs routine tests and turns
off within a few minutes after the vehicle is
turned off. Noise may be heard during this
time. If the brake pedal is pressed during
the tests or when the electric brake boost
system is off, a noticeable change in pedal
force and travel may be felt. This is normal.
Antilock Brake System (ABS)
The Antilock Brake System (ABS) helps
prevent a braking skid and maintain steering
while braking hard.
If there is a problem with ABS, this warning
light stays on. See Antilock Brake System
(ABS) Warning Light 088.
ABS does not change the time needed to
get a foot on the brake pedal and does not
always decrease stopping distance. If you
get too close to the vehicle ahead, there will
not be enough time to apply the brakes if
that vehicle suddenly slows or stops. Always
leave enough room ahead to stop, even
with ABS.
Using ABS
Do not pump the brakes. Just hold the brake
pedal down firmly. Hearing and feeling ABS
operate is normal.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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208 Driving and Operating
To activate Z-Mode, press the Z-Mode button
on the steering wheel. To deactivate, the
driver can either select a different mode
through the DMC knob or press the Z-Mode
button on the steering wheel. When Z-Mode
is deactivated through the Z-Mode button,
DMC is always set back to Tour Mode.
Mode Description
uWeather :Weather Mode is used for
slippery surfaces to help control wheel
speed. This can compromise the acceleration
on dry asphalt. This feature is not intended for use when
the vehicle is stuck in sand, mud, ice, snow,
or gravel. If the vehicle becomes stuck, see
If
the Vehicle Is Stuck 0187. See “Driver Mode
Attributes,” later in this section.
sTour :Use for normal city and highway
driving to provide a smooth, soft ride. This
setting provides a balanced setting between
comfort and handling. This is the standard
mode. See “Driver Mode Attributes,” later in
this section.
rSport : Use when road conditions or
personal preference demand a more
controlled response. When this mode is
selected, a down shift will be immediately
felt. In this mode the vehicle also monitors
driving behaviors and automatically enables
Performance Shift Features when spirited
driving is detected. These features maintain
lower transmission gears to increase
available engine braking and improve
acceleration response. The vehicle will exit
this feature and return to normal operation
after a short time when spirited driving is
no longer detected. The steering will change
to provide more precise control. If the
vehicle has Magnetic Ride Control, the
suspension will change to provide better cornering performance. When in Sport
Mode, the displays will change to sport
theme.
Competitive Mode can be accessed through
this mode. See
Competitive Driving Mode
0 214.
tTrack : Track Mode is used for closed
race tracks. Use when maximum vehicle
handling is desired. When in Track Mode,
the dual clutch transmission and steering
will adjust to track settings. The accelerator
pedal is adjusted to give maximum control
during the highest level of spirited driving.
This mode also modifies real time damping,
exhaust valve tuning, engine sound, brake
pedal feel, Electronic Stability Control (ESC)
performance and Traction Control System
(TCS) performance. When in Track Mode the
displays will change to track theme.
Performance Traction Management (PTM)
can be accessed through this mode. See
“Performance Traction Management,” later
in this section.
qMy Mode : My Mode is used to
personalize everyday driving. This mode
allows the driver to configure the driver
systems to their driving preferences. This
mode modifies the suspension, steering,

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212 Driving and Operating
Cluster Display
Configures the gauge cluster display for
each mode when linked (default).
The Layout Display (Theme) is a preset of
Cluster Display and cannot be modified or
changed independently.
Throttle Progression
Adjusts throttle sensitivity by selecting how
quickly or slowly the throttle reacts to
input.
Throttle Progression is a preset of
Powertrain and cannot be modified or
changed independently.
Transmission Shift Operation
Basic:
.Transmission upshifts and downshifts are
selected based on vehicle speed and
accelerator position to optimize comfort
and fuel economy during mild driving
conditions.
Driver Influenced Gear Selection:
.Aggressive driving will influence both the
upshift and downshift points in all modes.
.Criteria which have influence are: driving
mode, accelerator, brakes, lateral and
longitudinal loading.
.Changes in gear selection behavior due to
aggressive driving can include:
‐ Downshifting early with higher rpm’s
during aggressive braking (i.e. entering
a corner)
‐ Altering upshifts while experiencing
lateral acceleration
‐ Not upshifting when the accelerator is
released to avoid unnecessary shifts if
the accelerator is re-applied
‐ Recognizing sporty driving and
anticipate upcoming corners with the
appropriate gear selection entering and
exiting
.Driver Modes
‐Driver influenced changes are effective
in all driving modes, however the
aggressiveness of the transmission
response will increase between Tour,
Sport, and Track Modes respectively.
Active Fuel Management (engine cylinder
shuts off)
.Normal with Dual Clutch Transmission:
The engine uses 8-cylinder mode when
accelerating, but changes to 4-cylinder
mode when coasting. Active Fuel Management is a preset of
Powertrain and cannot be modified or
changed independently.
Engine Sound
Caution
Using a stealth engine sound setting
during spirited driving will cause the
exhaust system to overheat and damage
the variable exhaust valves. Do not use
this setting when auto-crossing or driving
on high speed tracks.
If available, engine sound settings change
when the variable exhaust valves open.
Steering (Assist Effort)
Adjusts from a lighter steering feel to
reduced assist for more steering feel.
Magnetic Ride Control (if equipped)
Adjusts the shock dampening firmness based
on driving conditions to improve comfort
and performance.
Drive Mode Customization
The vehicle is equipped to modify the
following vehicle settings base on vehicle
content. Through the center stack, under

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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

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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.

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266 Vehicle Care
Intended Outboard Sidewall:The side
of an asymmetrical tire that must
always face outward when mounted on
a vehicle.
Kilopascal (kPa)
:The metric unit for air
pressure.
Light Truck (LT-Metric) Tire
:A tire used
on light duty trucks and some
multipurpose passenger vehicles.
Load Index
:An assigned number
ranging from 1 to 279 that corresponds
to the load carrying capacity of a tire.
Maximum Inflation Pressure
:The
maximum air pressure to which a cold
tire can be inflated. The maximum air
pressure is molded onto the sidewall.
Maximum Load Rating
:The load rating
for a tire at the maximum permissible
inflation pressure for that tire.
Maximum Loaded Vehicle Weight
:The
sum of curb weight, accessory weight,
vehicle capacity weight, and production
options weight. Normal Occupant Weight
:The number
of occupants a vehicle is designed to
seat multiplied by 68 kg (150 lb). See
Vehicle Load Limits 0188.
Occupant Distribution
:Designated
seating positions.
Outward Facing Sidewall
:The side of
an asymmetrical tire that has a
particular side that faces outward when
mounted on a vehicle. The side of the
tire that contains a whitewall, bears
white lettering, or bears manufacturer,
brand, and/or model name molding
that is higher or deeper than the same
moldings on the other sidewall of
the tire.
Passenger (P-Metric) Tire
:A tire used
on passenger cars and some light duty
trucks and multipurpose vehicles.
Recommended Inflation Pressure
:
Vehicle manufacturer's recommended
tire inflation pressure as shown on the
tire placard. See Tire Pressure0267 and
Vehicle Load Limits 0188. Radial Ply Tire
:A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim
:A metal support for a tire and
upon which the tire beads are seated.
Sidewall
:The portion of a tire between
the tread and the bead.
Speed Rating
:An alphanumeric code
assigned to a tire indicating the
maximum speed at which a tire can
operate.
Traction
:The friction between the tire
and the road surface. The amount of
grip provided.
Tread
:The portion of a tire that comes
into contact with the road.
Treadwear Indicators
:Narrow bands,
sometimes called wear bars, that show
across the tread of a tire when only
1.6 mm (1/16 in) of tread remains. See
When It Is Time for New Tires 0273.

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Customer Information 311
G:View maintenance schedules, alerts, and
Vehicle Diagnostic Information. Schedule
service appointments.
I: View service records from your
dealership and add your own.
D: Select a preferred dealer and view
locations, maps, phone numbers, and hours.
r: Track your vehicle’s warranty
information.
J: View active recalls by Vehicle
Identification Number (VIN). See Vehicle
Identification Number (VIN) 0304.
H:Manage your profile and payment
information. View your GM Rewards Card
earnings and My Chevrolet Rewards points.
F: Chat with online help representatives.
Visit my.chevrolet.com and create an
account today.
Chevrolet Owner Centre (Canada)
mychevrolet.ca
Visit the Chevrolet Owner Centre at
mychevrolet.ca (English) or my.chevrolet.ca
(French) to access similar benefits to the
U.S. site.
GM Mobility Reimbursement
Program
This program is available to qualified
applicants for cost reimbursement, up to
certain limits, of eligible aftermarket
adaptive equipment required for the vehicle,
such as hand controls or a wheelchair/
scooter lift for the vehicle.
To learn about the GM Mobility program,
see www.gmmobility.com or call the GM
Mobility Assistance Center at 1-800-323-9935.
Text Telephone (TTY) users, call
1-800-833-9935.
General Motors of Canada also has a
Mobility program. See www.gm.ca, or call
1-800-GM-DRIVE (800-463-7483) for details.
TTY users call 1-800-263-3830.
Roadside Assistance Program
For U.S.-purchased vehicles, call
1-800-243-8872. (Text Telephone (TTY):
1-888-889-2438.)
For Canadian-purchased vehicles, call
1-800-268-6800.
Service is available 24 hours a day, 365 days
a year.
Calling for Assistance
When calling Roadside Assistance, have the
following information ready:
.Your name, home address, and home
telephone number
.Telephone number of your location
.Location of the vehicle
.Model, year, color, and license plate
number of the vehicle
.Odometer reading, Vehicle Identification
Number (VIN), and delivery date of the
vehicle
.Description of the problem

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Customer Information 315
GM vehicle by limiting compensation for
damage repairs through the use of
aftermarket collision parts. Some insurance
companies will not specify aftermarket
collision parts. When purchasing insurance,
we recommend that you ensure that the
vehicle will be repaired with GM original
equipment collision parts. If such insurance
coverage is not available from your current
insurance carrier, consider switching to
another insurance carrier.
If the vehicle is leased, the leasing company
may require you to have insurance that
ensures repairs with Genuine GM Original
Equipment Manufacturer (OEM) parts or
Genuine Manufacturer replacement parts.
Read the lease carefully, as you may be
charged at the end of the lease for poor
quality repairs.
If a Crash Occurs
If there has been an injury, call emergency
services for help. Do not leave the scene of
a crash until all matters have been taken
care of. Move the vehicle only if its position
puts you in danger, or you are instructed to
move it by a police officer.Give only the necessary information to
police and other parties involved in the
crash.
For emergency towing see
Roadside
Assistance Program 0311.
Gather the following information:
.Driver name, address, and telephone
number
.Driver license number
.Owner name, address, and telephone
number
.Vehicle license plate number
.Vehicle make, model, and model year
.Vehicle Identification Number (VIN)
.Insurance company and policy number
.General description of the damage to the
other vehicle
Choose a reputable repair facility that uses
quality replacement parts. See “Collision
Parts” earlier in this section.
If the airbag has inflated, see What Will You
See after an Airbag Inflates? 055.
Managing the Vehicle Damage Repair
Process
In the event that the vehicle requires
damage repairs, GM recommends that you
take an active role in its repair. If you have
a pre-determined repair facility of choice,
take the vehicle there, or have it towed
there. Specify to the facility that any
required replacement collision parts be
original equipment parts, either new
Genuine GM parts or recycled original GM
parts. Remember, recycled parts will not be
covered by the GM vehicle warranty.
Insurance pays the bill for the repair, but
you must live with the repair. Depending on
your policy limits, your insurance company
may initially value the repair using
aftermarket parts. Discuss this with the
repair professional, and insist on Genuine
GM parts. Remember, if the vehicle is
leased, you may be obligated to have the
vehicle repaired with Genuine GM parts,
even if your insurance coverage does not
pay the full cost.
If another party's insurance company is
paying for the repairs, you are not obligated
to accept a repair valuation based on that
insurance company's collision policy repair
limits, as you have no contractual limits

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316 Customer Information
with that company. In such cases, you can
have control of the repair and parts choices
as long as the cost stays within reasonable
limits.
Publication Ordering Information
Service Manuals
Service manuals have the diagnosis and
repair information on the engine,
transmission, axle, suspension, brakes,
electrical system, steering system, body, etc.
Customer Literature
Owner’s manuals are written specifically for
owners and are intended to provide basic
operational information about the vehicle.
The owner’s manual includes the
Maintenance Schedule for all models.
Customer literature publications available for
purchase include owner’s manuals, warranty
manuals, and portfolios. Portfolios include an
owner’s manual, warranty manual,
if applicable, and zip lock bag or pouch.
Current and Past Models
Service manuals and customer literature are
available for many current and past model
year GM vehicles.To order, call 1-800-551-4123 Monday–Friday,
8:00 a.m.–6:00 p.m. eastern time
For credit card orders only (VISA,
MasterCard, or Discover), see Helm, Inc. at:
www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.
Radio Frequency Statement
This vehicle uses license-exempt transmitters
/ receivers / systems that operate on a
radio frequency that complies with Part 15/
Part 18 of the Federal Communications
Commission (FCC) rules and with Innovation,
Science and Economic Development (ISED)
Canada's license-exempt RSS(s) / RSP-100 /
ICES-GEN.
Operation is subject to the following two
conditions:
1. The device may not cause harmful interference. 2. The device must accept any interference
received, including interference that may
cause undesired operation of the device.
Changes or modifications to any of these
systems by other than an authorized service
facility could void authorization to use this
equipment.
Reporting Safety Defects
Reporting Safety Defects to the
United States Government
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you should
immediately inform the National
Highway Traffic Safety Administration
(NHTSA) in addition to notifying General
Motors.
If NHTSA receives similar complaints, it
may open an investigation, and if it
finds that a safety defect exists in a
group of vehicles, it may order a recall
and remedy campaign. However, NHTSA
cannot become involved in individual
problems between you, your dealer,
or General Motors.