brake CHEVROLET CORVETTE 2020 Service Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Driving and Operating 181
Automatic EPB Release
The EPB will automatically release if
the vehicle is running, placed into
gear, and an attempt is made to
drive away. Avoid rapid acceleration
when the EPB is applied, to
preserve parking brake lining life.
Brake Assist
Brake Assist detects rapid brake
pedal applications due to
emergency braking situations and
provides additional braking to
activate the Antilock Brake System
(ABS) if the brake pedal is not
pushed hard enough to activate
ABS normally. Minor noise, brake
pedal pulsation, and/or pedal
movement during this time may
occur. Continue to apply the brake
pedal as the driving situation
dictates. Brake Assist disengages
when the brake pedal is released.
Hill Start Assist (HSA)
{Warning
Do not rely on the HSA feature.
HSA does not replace the need to
pay attention and drive safely.
You may not hear or feel alerts or
warnings provided by this system.
Failure to use proper care when
driving may result in injury, death,
or vehicle damage. See
Defensive Driving0147.
When the vehicle is stopped on a
grade, Hill Start Assist (HSA)
prevents the vehicle from rolling in
an unintended direction during the
transition from brake pedal release
to accelerator pedal apply. The
brakes release when the accelerator
pedal is applied. If the accelerator
pedal is not applied within a few
minutes, the Electric Parking Brake
will apply. The brakes may also
release under other conditions. Do
not rely on HSA to hold the vehicle. HSA is available when the vehicle is
facing uphill in a forward gear,
or when facing downhill in
R (Reverse). The vehicle must
come to a complete stop on a grade
for HSA to activate.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
182 Driving and Operating
Ride Control Systems
Traction Control/
Electronic Stability
Control
The vehicle has a Traction Control
System (TCS) and a StabiliTrak/
Electronic Stability Control (ESC)
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/ESC activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak/ESC 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 0196.
If the driver disables TCS, cruise
control will disengage. Cruise
control will also be disabled if
Performance Traction Management
(PTM) is selected, or if StabiliTrak is
turned off.
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 0159
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/ESC is
activated
. Flash when ABS is active
. 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

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Driving and Operating 183
maintaining control. The vehicle is
safe to drive, but driving should be
adjusted accordingly.
If
dcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on and
stays on, the vehicle may need
more time to diagnose the problem.
If the condition persists, see your
dealer.
Turning the Systems Off
and On
The TCS/StabiliTrak/ESC button is
on the center console.
Caution
Do not repeatedly brake or
accelerate heavily when TCS is
off. The vehicle driveline could be
damaged.
To turn off only TCS, press and
release
g. The Traction Off lighti
illuminates in the instrument cluster. To turn TCS on again, press and
release
g. The Traction Off lighti
displayed in the instrument cluster
will turn off.
If TCS is limiting wheel spin when
g
is pressed, the system will not turn
off until the wheels stop spinning.
To turn off both TCS and StabiliTrak/
ESC, press and hold
guntil the
Traction Off light
iand StabiliTrak/
ESC OFF light
gilluminate and stay
on in the instrument cluster.
To turn TCS and StabiliTrak/ESC on
again, press and release
g. The
Traction Off light
iand StabiliTrak/
ESC OFF light
gin the instrument
cluster turn off.
If the Tire Pressure Monitor System
(TPMS) system is malfunctioning
and the DIC displays SERVICE
TIRE MONITOR SYSTEM,
StabiliTrak/ESC will be affected as
follows:
. StabiliTrak/ESC cannot be
turned off by the driver.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
184 Driving and Operating
.If StabiliTrak/ESC is off, it will be
turned on automatically.
. Competitive Driving Mode or
Performance Traction
Management is unavailable.
. StabiliTrak/ESC will feel different
in aiding and maintaining
directional control.
Adding accessories can affect the
vehicle performance. See
Accessories and Modifications
0 211.
Hill Rollback Control
If the vehicle is in gear and
inadvertently rolls backwards, Hill
Rollback Control helps limit the
rollback to a very low speed.
A noise may be heard while the
vehicle speed is actively being
controlled. A Driver Information
Center (DIC) message displays
when active.
Driver Mode Control
Driver Mode Control (DMC) adds a
sportier feel, provides a more
comfortable ride, or assists in different weather conditions or
terrain. This system simultaneously
changes the software settings of
various sub-systems to optimize
driving performance. Depending on
the option package, available
features, and mode selection; the
Exhaust, Suspension, Steering,
Brakes, and Powertrain will change
settings to achieve the desired
mode characteristics. If the vehicle
is equipped with Magnetic Ride
Control, selecting the various driver
modes adjusts the ride of the
vehicle to enhance the ride
performance for the road conditions
and the selected mode.
Driver Mode Control has multiple
modes: My Mode, Weather, Tour,
Sport, Track, and Z-Mode.
Weather, Tour, Sport, and Track are
four modes that have preset vehicle
setting for use in different driving
conditions. My Mode and Z-Mode
are two modes which can be
customized by the driver. In these
two modes, vehicle settings are
configured to enhance and
personalize the driving experience.
See
“Mode Description,” later in this
section.
Mode Activation
To activate My Mode, Weather, Tour,
Sport and Track Mode, turn the
Driver Mode Control (DMC) knob on
the center console to make a mode
selection. When a mode is selected,
an indicator will be displayed in the
Driver Information Center (DIC)i.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
186 Driving and Operating
Through the center display, the
following vehicle sub-systems may
be available for customization in
this mode.
Through the center display, the
following vehicle sub-systems may
be available for customization in
this mode:
Engine Sound:(some choices,
if equipped) Stealth, Tour, Sport,
Track
Steering: Tour, Sport, Track
Suspension: If equipped, Tour,
Sport, Track Brake Response:
Tour, Sport,
Track
See “Driver Mode Attributes,” later
in this section.
See “Driver Mode Customization,”
later in this section. Cluster/HUD
can be set in the cluster.
vZ-Mode : Z-Mode is used to
personalize dynamic driving. This
mode is designed to allow the driver
to configure vehicle sub-systems to
their own preference for maximum
handling. Z-Mode further enhances
the driver experience by adding a
powertrain customization.
Through the center display, the
following vehicle sub-systems may
be available for customization in
this mode. Engine Sound:
(some choices,
if equipped) Stealth, Tour, Sport,
Track
Steering: Tour, Sport, Track
Suspension: If equipped, Tour,
Sport, Track
Powertrain: Normal, Sport, Track,
Weather
Brake Response: Tour, Sport,
Track
See “Driver Mode Attributes,” later
in this section.
See “Driver Mode Customization,”
later in this section.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Driving and Operating 189
SteeringTour
(Default),
Sport, Track Tour Tour Sport Track Tour, Sport
(Default),Track
Suspension (if equipped with
Magnetic Ride) Tour
(Default),
Sport, Track Tour Tour Sport Track Tour, Sport
(Default),Track
Brake Response Tour
(Default),
Sport, Track Tour Tour Sport Track Tour, Sport
(Default),Track
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

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Driving and Operating 191
Brake Response:
This setting adjusts the brake pedal
response. Settings range from a
slower response for more
comfortable driving to the quickest
response for quicker deceleration.
Brake pedal travel decreases and
caliper pressure increases as you
move from Tour to Sport. Track
allows for improved pedal precision
at higher decelerations for high
performance driving.
.Tour, Sport, Track
Display:
This setting adjusts the cluster
display theme (this setting is only
configured through the cluster using
the steering wheel controls).
. Tour, Sport, Track, Weather (and
any informational tiles set-up).
Front Lift System
A two-position lift actuator (one per
damper) with 35 mm (1.5 in) of
stroke will hydraulically raise the
front of the vehicle to provide
approximately 50 mm (2 in) of increased clearance in
approximately 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

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
192 Driving and Operating
controls, seeSteering Wheel
Controls 087. 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 0295.
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 accomplished by regulating and
optimizing the engine, brakes, and
suspension performance. These
modes are for use at a closed
course race track and are not
intended for use on public roads.
They will not compensate for driver
inexperience or lack of familiarity
with the race track. Drivers who
prefer to allow the system to have
more control of the engine, brakes, and suspension are advised to turn
the normal traction control and
StabiliTrak/ESC systems on.
Competitive Driving Mode
Competitive Driving Mode allows full
engine power while StabiliTrak/ESC
helps maintain directional control of
the vehicle by selective brake
application. In this mode, the TCS is
off and Launch Control is available.
Adjust your driving style to account
for the available engine power. See
“Launch Control”
later in this
section.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
194 Driving and Operating
.Requires more driving skill than
mode 2.
. StabiliTrak/ESC is on and more
engine power is available than in
mode 2.
PTM Mode 4 –Sport 2
. 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.
PTM Mode 5 –Race
. 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 releasegto turn off PTM
and return to the TCS and
StabiliTrak/ESC systems. The
traction off light
iand StabiliTrak
Off light
gwill 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, while maintaining the
fully pressed accelerator pedal, will
manage tire slip and transmissions

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
196 Driving and Operating
.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.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 0182. 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.