2021 CHEVROLET CORVETTE C8 transmission fluid

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Instruments and Controls 81
Battery Voltage :Shows the current battery
voltage.
Transmission Fluid Temperature : Shows the
temperature of the transmission fluid in
either degrees Celsius (°C) or degrees
Fahrenheit (°F).
Tire Status : Shows individual tire pressures
and overall temperature as either Cold, Cool,
Normal, Warm, or Hot. Normal is typical for
normal driving while Warm is typical for
aggressive driving. Unknown may be
displayed if tire temperature information is
unavailable.
eLSD (Z51 Only) : Displays the amount of
rear differential coupling when the Electronic
Limited-Slip Differential (eLSD) is active and
functioning during vehicle operation.
A reading of 1% is an open differential and
100% is locked. It is normal for the value to
make small or large changes due to driving
conditions and driver inputs. See Limited-Slip
Differential (without Z51) 0217 or
Limited-Slip Differential (with Z51) 0217.
Front Lift : During a driver requested Front
Lift (if equipped), the driver may
"remember" using the
S, or dismiss the
display by pressing the thumbwheel. When
the Front Lift is Raised due to location, the driver may delete that stored location using
the
S, or dismiss the display by pressing
the thumbwheel.
See Front Lift System 0213.
Audio
In the Audio menu, use the thumbwheel to
scroll through audio presets.
Options
Use the thumbwheel to scroll through items
in the Options menu.
Units
Press the thumbwheel while Units is
displayed to enter the Units menu. Choose
US or metric units by pressing the
thumbwheel while the desired item is
highlighted. A selected mark will be
displayed next to the selected item.
Display Themes
Press the thumbwheel to enter the Display
menu. There are six instrument cluster
display configurations to choose from. Sport,
Tour, Track, Weather, My Mode, and
Z-Mode. The style of the cluster will change
depending on the theme selected. Default is linked to Driver mode. Other
display themes can be set
If in Z-Mode or My Mode then those
displays plus HUD (if equipped) can be set.
.Sport/Z-Mode: Displays Coolant
Temperature, Fuel Gauge, Compass, Drive
Mode Indicator, Odometer, Speed,
Tachometer, Electronic Transmission
Range, Current Gear, Active Fuel
Management (AFM), Peak Performance,
Performance Shift Lights, Speed Limit, Info
Area, and Interaction Area.
.Tour/Weather/My Mode: Displays Coolant
Temperature, Fuel Gauge, Compass, Drive
Mode Indicator, Odometer, Speed,
Tachometer, Electronic Transmission
Range, Current Gear, Active Fuel
Management (AFM), Peak Performance,
Speed Limit, Info Area, and
Interaction Area.
.Track: Displays Coolant Temperature, Fuel
Gauge, Performance Traction
Management, Drive Mode Indicator,
Speed, Tachometer, Electronic
Transmission Range, Current Gear, Info
Area, and Interactive Area.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
82 Instruments and Controls
Preset info tiles shown on each layout:
Sport :G-Force, Oil Temperature
Track : Oil Pressure, Transmissions Fluid
Temperature, Tire Pressure & Tire
Temperature, Oil Temperature
Tour : Time & Outside Air Temperature, Oil
Pressure
Weather : Time & Outside Air Temperature,
Tire Status
Z-Mode : Oil Temperature, G-Force
My Mode : Economy Trend, Oil Pressure
Head-Up Display (HUD) Rotation
Press the thumbwheel while Adjust Rotation
is highlighted to enter Adjust Mode. Scroll
to adjust the angle of the HUD display.
Press the thumbwheel to confirm and save
the setting. This feature may only be
available in P (Park).
Speed Warning
The Speed Warning display allows the driver
to set a speed that they do not want to
exceed. To set the Speed Warning, press the
thumbwheel when Speed Warning is
displayed, or press the thumbwheel on the
main view to set the speed value. Scroll to
adjust the value. Press the thumbwheel to set the speed. Once the speed is set, this
feature can be turned off by pressing the
thumbwheel while viewing this page. If the
selected speed limit is exceeded, a pop-up
warning is displayed with a chime.
Software Info
Press
Twhile Software Info is highlighted
to display open source software information.
Simplify
Press the thumbwheel to enter the Simplify
menu. Simplify mode allows certain features
of the instrument cluster to be hidden.
These features include info tiles and
interactive areas.
Scroll to the desired features with the
thumbwheel, and press to toggle them on
or off.
Using the thumbwheel, except to
acknowledge an alert, will exit
Simplify mode.
The selected features will stay hidden even
after starting and restarting the vehicle,
unless Simplify mode is manually canceled.
Speedometer
The speedometer shows the vehicle's speed
in either kilometers per hour (km/h) or
miles per hour (mph).
Odometer
The odometer shows how far the vehicle has
been driven, in either kilometers or miles.
Trip Odometer
The trip odometer shows how far the
vehicle has been driven since the trip
odometer was last reset.
The trip odometer is accessed and reset
through the Driver Information Center (DIC).
See Driver Information Center (DIC) 092.
Tachometer
The tachometer displays the engine speed in
revolutions per minute (rpm).
Shift lights will not appear until the engine
is warm.
In Track theme, the tachometer can be set
to display a traditional tachometer, or a
numerical tachometer with shift lights.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 83
Caution
If the engine is operated with the rpm in
the warning area at the high end of the
tachometer, the vehicle could be
damaged, and the damage would not be
covered by the vehicle warranty. Do not
operate the engine with the rpm in the
warning area.
Fuel Gauge
When the ignition is on, the fuel gauge
indicates about how much fuel is left in
the tank.
When the indicator nears empty, the low
fuel light comes on. There is still a little fuel
left, but the fuel tank should be filled soon.Here are four things that some owners ask
about. None of these show a problem with
the fuel gauge:
.At the service station, the fuel pump
shuts off before the gauge reads full.
.It takes a little more or less fuel to fill up
than the gauge indicated. For example,
the gauge indicated the tank was half
full, but it actually took a little more or
less than half the tank's capacity to fill
the tank.
.The gauge moves a little while turning a
corner or speeding up.
.The gauge takes a few seconds to
stabilize after the ignition is turned on,
and goes back to empty when the
ignition is turned off.
Engine Coolant Temperature
Gauge
This gauge shows the engine coolant
temperature.If the gauge pointer moves into the red
zone, the engine is too hot.
This reading indicates the same thing as the
warning light. It means that the engine
coolant has overheated. If the vehicle has
been operating under normal driving
conditions, pull off the road, stop the
vehicle, and turn off the engine as soon as
possible. See
Engine Overheating 0248 for
more information.
Transmission Temperature Gauge
This gauge will display when the
transmission is experiencing abnormal
temperatures.
As the transmission begins to overheat, the
gauge fills to the right.
The Transmission Temperature Gauge
monitors all aspects of the transmission.
Elevated transmission temperatures may not
be reflected in the Transmission Fluid
Temperature cluster display gauge.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 93
amber. SeeTire Pressure Monitor System
0 269 and
Tire Pressure Monitor Operation 0270.
Transmission Fluid Life : Displays an
estimate of the fluid's remaining useful life.
If REMAINING FLUID LIFE 99% is displayed,
that means 99% of the current fluid life
remains.
When the remaining fluid life is low, the
CHANGE TRANSMISSION FLUID SOON
message will appear on the display. The
fluid should be changed as soon as possible.
See Dual Clutch Transmission Fluid Life
System 0242. In addition to the
Transmission Fluid Life system monitoring
the fluid life, additional maintenance is
recommended in the Maintenance Schedule.
See Maintenance Schedule 0293.
The Fluid Life display must be reset after
each fluid change. It will not reset itself. Do
not reset the Fluid Life display accidentally
at any time other than when the fluid has
just been changed. It cannot be reset
accurately until the next fluid change. To
reset the Transmission Fluid Life system,
press and hold SEL for several seconds while
the Fluid Life display is active. Fuel Economy :
Displays the average fuel
economy, the best fuel economy over the
selected distance, and a bar graph showing
instantaneous fuel economy. Pressing the
thumbwheel will open a menu to change
the selected distance or reset the current
values.
Timer/Fuel Used : This display can be used
as a timer. To start/stop the timer, press the
thumbwheel while this display is active and
then select the start/stop the timer. The
display will show the amount of time that
has passed since the timer was last reset. To
reset the timer to zero, press the
thumbwheel to access the menu while this
display is active.
Fuel Used displays the approximate liters (L)
or gallons (gal) of fuel that have been used
since last reset. The fuel used can be reset
by pressing the thumbwheel and selecting
Reset Fuel Used in the menu.
Economy Trend : Shows the instantaneous
fuel economy and current gas mileage.
Speed Limit : Displays sign information,
which comes from a roadway database in
the on-board navigation. Engine Hours/Lifetime Revs :
Displays the
total number of hours the engine has run.
It also shows total engine revolutions
divided by 10,000.
Head-Up Display (HUD)
{Warning
If the HUD image is too bright, or too
high in your field of view, it may take
you more time to see things you need to
see when it is dark outside. Be sure to
keep the HUD image dim and placed low
in your field of view.
If equipped with HUD, some information
concerning the operation of the vehicle is
projected onto the windshield.
The HUD information appears as an image
focused out toward the front of the vehicle.
Caution
If you try to use the HUD image as a
parking aid, you may misjudge the
distance and damage your vehicle. Do not
use the HUD image as a parking aid.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Instruments and Controls 97
If the HUD image is not correct, contact
your dealer.
The windshield is part of the HUD system.
SeeWindshield Replacement 0253.
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
.Steering
.Ride Control Systems
.Driver Assistance Systems
.Cruise Control
.Front Lift System
.Lighting and Bulb Replacement
.Wiper/Washer Systems
.Doors and Windows
.Seat Belts
.Airbag Systems
.Engine and Transmission
.Tire Pressure
.Battery
Engine Power Messages
REDUCED ACCELERATION DRIVE
WITH CARE
This message displays when the vehicle
propulsion power is reduced. A reduction in
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. Under certain conditions, the performance
may be reduced the next time the vehicle is
driven. The vehicle may be driven while this
message is on, but maximum acceleration
and speed may be reduced. Anytime this
message stays on, or displays repeatedly,
the vehicle should be taken to your dealer
for service as soon as possible.
Under certain operating conditions,
propulsion will be disabled. Try restarting
after the ignition has been off for
two minutes.
Vehicle Speed Messages
SPEED LIMITED TO XXX KM/H (MPH)
This message shows that the vehicle speed
has been limited to the speed displayed. The
limited speed is a protection for various
propulsion and vehicle systems, such as
lubrication, thermal, brakes, suspension,
Teen Driver (if equipped), or tires.
Vehicle Personalization
The following are all possible vehicle
personalization features. Depending on the
vehicle, some may not be available.
For System, Apps, and Personal features and
functions, see
Settings0153.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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180 Driving and Operating
Be sure to follow all service procedures
before driving the vehicle at track events or
competitively.
{Warning
Prior to each track event and again
before returning to public roads, tighten
the wheel nuts with a torque wrench to
the proper torque specification. Wheel
nuts that are improperly or incorrectly
tightened can cause the wheels to
become loose or come off, resulting in a
crash. SeeCapacities and Specifications
0 305 for wheel nut torque specifications.
If equipped, the front license plate bracket
should be removed and replaced with the
aero cover for track use.
Engine Sound Management Setting Caution
Do not place the vehicle in Engine Sound
Management–Stealth mode. Damage
could result to exhaust valve actuators.
Engine Oil
Caution
If the vehicle is used for track events and
competitive driving, the engine may use
more oil than it would with normal use.
Low oil levels can damage the engine.
Check the oil level often and maintain
the proper level. See Engine Oil0238.
Check the oil level often during track events
and competitive driving. See “Checking the
Engine Oil" in Engine Oil0238.
Engine Cooling
If reduced performance is experienced during
track events or competitive driving, turning
off the A/C will help to improve engine
performance.
Maintain a mixture of 40% DEX-COOL
coolant and 60% clean, drinkable water to
optimize engine performance.
Fuel
Unleaded gasoline, rated at 93 octane or
higher, is required.
Caution
Some high octane fuels contain additives
and compounds that may damage the
vehicle and void the vehicle warranty. See
Prohibited Fuels 0226.
Dual Clutch Transmission Fluid
The transmission fluid and external filter
should be changed after every 24 hours of
track usage. If prompted by the transmission
fluid life monitor that remaining fluid life is
low, the fluid and external filter should be
changed as soon as possible.
Add an additional 2 L (2 qt) of DCT
transmission fluid prior to track usage. It is
not required to remove the additional 2 L
(2 qt) of DCT fluid.
Any transmission level set or change should
be performed at your dealer.
Brakes
Battery Disconnect
Disconnect the battery before servicing the
hydraulic brake system. It is critical to
disconnect the battery before bleeding the
system, replacing the pads, or any other
work. The battery must be disconnected to

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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186 Driving and Operating
road is wet enough and you are going fast
enough. When the vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to slow
down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather
driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment in
good shape.
.Keep the windshield washer fluid reservoir
filled.
.Have good tires with proper tread depth.
SeeTires 0261.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through mountains
is different than driving on flat or rolling
terrain. Tips include:
.When driving downhill in D (Drive), the
vehicle may automatically downshift to
assist with speed control.
.A lower gear may also be selected to
provide further speed control.
{Warning
Using the brakes to slow the vehicle on a
long downhill slope can cause brake
overheating, can reduce brake
performance, and could result in a loss of
braking. Shift the transmission to a lower
gear to let the engine assist the brakes
on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral) or with
the ignition off is dangerous. This can
cause overheating of the brakes and loss
of steering assist. Always have the engine
running and the vehicle in gear.
.Drive at speeds that keep the vehicle in
its own lane. Do not swing wide or cross
the center line.
.Be alert on top of hills; something could
be in your lane (e.g., stalled car, crash).
.Pay attention to special road signs (e.g.,
falling rocks area, winding roads, long
grades, passing or no-passing zones) and
take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and the road
creates less traction or grip, so drive
carefully. Wet ice can occur at about 0 °C
(32 °F) when freezing rain begins to fall.
Avoid driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating too quickly
causes the wheels to spin and makes the
surface under the tires slick.
.Turn on Traction Control. See Traction
Control/Electronic Stability Control 0205.
.The Antilock Brake System (ABS) improves
vehicle stability during hard stops, but
the brakes should be applied sooner than
when on dry pavement. See Antilock
Brake System (ABS) 0203.
.Allow greater following distance and
watch for slippery spots. Icy patches can
occur on otherwise clear roads in shaded
areas. The surface of a curve or an
overpass can remain icy when the
surrounding roads are clear. Avoid sudden
steering maneuvers and braking while
on ice.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 199
6. The vehicle will now remain inN (Neutral).
Driver Leaves Vehicle : To place the vehicle
in N (Neutral) with the engine off and the
vehicle unoccupied:
1. Ensure the vehicle is on level ground, the engine is running and the vehicle is in
P (Park).
2. Apply the brake pedal.
3. Open the door.
4. Shift to N (Neutral).
5. Turn off the engine and release the brake pedal.
6. The indicator should continue to show N. If it does not, start the engine and
repeat Steps 2–5.
7. Exit the vehicle and close the door.
8. The vehicle may automatically shift to P (Park) upon re-entry.Caution
A transmission hot message may display
if the transmission fluid is too hot.
Driving under this condition can damage
the vehicle. Stop and idle the engine to
cool the transmission fluid. This message
clears when the transmission fluid has
cooled sufficiently.
D : This position is for normal driving.
If more power is needed for passing, press
the accelerator pedal.
If the vehicle is shifted into D (Drive) while
the speed is too high, the transmission will
get ready to engage D (Drive). Reduce the
vehicle speed, then the transmission will
engage D (Drive).
To shift into D (Drive):
1. Bring the vehicle to a complete stop.
2. Pull the D (Drive) switch on the center console.
To shift out of D (Drive): 1. Bring the vehicle to a complete stop.
2. Shift to the desired gear. Downshifting the transmission in slippery
road conditions could result in skidding. See
“Skidding”
underLoss of Control 0179.
The transmission can be shifted like a
manual transmission using the paddle shift
controls while in D (Drive). See Manual
Mode 0200.
Caution
Spinning the tires or holding the vehicle
in one place on a hill using only the
accelerator pedal may damage the
transmission. The repair will not be
covered by the vehicle warranty. If the
vehicle is stuck, do not spin the tires.
When stopping on a hill, use the brakes
to hold the vehicle in place.