ECU CHEVROLET CORVETTE C8 2021 Owners Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
6 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Remote Keyless Entry (RKE) System . . . . . 7
Remote Keyless Entry (RKE) SystemOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 12
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Automatic Door Locks . . . . . . . . . . . . . . . . . . 16
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 17
Doors
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Hatch (Trunk) . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 22
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 22
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Immobilizer Operation . . . . . . . . . . . . . . . . . . 24
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 25 Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 26
Automatic Dimming Mirror . . . . . . . . . . . . . 26
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . 26
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 26
Manual Rearview Mirror . . . . . . . . . . . . . . . . 26
Automatic Dimming Rearview Mirror . . . 26
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . 27
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 29
Rear Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Roof
Roof Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Convertible Top . . . . . . . . . . . . . . . . . . . . . . . . 34
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
remote key is dangerous and children or
others could be seriously injured or killed.
They could operate the power windows
or other controls or make the vehicle
move. The windows will function with
the remote key in the vehicle, and
children or others could be caught in the
path of a closing window. Do not leave
children in a vehicle with a remote key.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 11
4. Press ENGINE START/STOP. When theremote key is learned, the DIC display
will show that it is ready to program the
next remote key.
5. Remove the remote key from the backup location and press
KorQon the
remote key.
To program additional remote keys,
repeat Steps 3–5.
When all additional remote keys are
programmed, press and hold ENGINE
START/STOP for approximately
12 seconds to exit programming mode.
Programming without Recognized
Remote Keys
If two currently recognized remote keys are
not available, see your dealer to program
new remote keys.
Starting the Vehicle with a Low Remote
Key Battery
For improved vehicle security, the remote
key is equipped with a motion sensor. When
starting the vehicle, if the remote key has
been idle for a while, the DIC may display
KEY IN SLEEP MODE, MOVE KEY, THEN
START. Move the remote key slightly and
try starting the vehicle. If the remote key battery is weak or if there is interference
with the signal, the DIC may display NO
REMOTE DETECTED or NO REMOTE KEY WAS
DETECTED PLACE KEY IN KEY POCKET, THEN
START YOUR VEHICLE.
If this occurs, follow these steps:
1. Place the remote key in the cupholder
with the mechanical key end facing up.
2. With the vehicle in P (Park) or N (Neutral), press the brake pedal and
ENGINE START/STOP.
Replace the remote key battery as soon
as possible.
Battery Replacement
{Warning
Never allow children to play with the
remote key. The remote key contains a
small battery, which can be a choking
hazard. If swallowed, internal burns can
occur, resulting in severe injury or death.
Seek medical attention immediately if a
battery is swallowed.
{Warning
To avoid personal injury, do not touch
metal surfaces on the remote key when
it has been exposed to extreme heat.
These surfaces can be hot to the touch at
temperatures above 59 °C (138 °F).
Caution
When replacing the battery, do not touch
any of the circuitry on the remote key.
Static from your body could damage the
remote key.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 21
.Press the hatch/trunk release touchpad
while unlocked, or if locked, with the
remote key within 1 m (3 ft). SeeKeys
0 6.
.From the rear of the vehicle, lift the
hatch/trunk until the gas strut system
automatically raises and holds it in the
fully open position.
Manual Hatch/Trunk Open
Use the mechanical key in the backup key
cylinder behind the license plate to
manually open the hatch/trunk. The license
plate must be removed.
To provide more access to the engine or
trunk areas, the hatch/trunk can be
manually pushed up for additional travel. Do
not apply excessive force.
Hatch/Trunk Closing
Caution
Do not store heavy or sharp objects in
the rear storage compartments located in
the hatch/trunk area. The objects could
damage the underside of the hatch/trunk.
Use the pull cup to close the hatch/trunk
with light force until the power latch feature
activates. The hatch/trunk will close the rest
of the way and latch automatically.
Emergency Hatch/Trunk Release Handle Caution
Do not use the emergency hatch/trunk
release handle as a tie-down or anchor
point when securing items in the hatch/
trunk as it could damage the handle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
22 Keys, Doors, and Windows
There is a glow-in-the-dark emergency
hatch/trunk release handle on the inside
back wall of the storage compartment. This
handle will glow following exposure to light.
Pull the release handle to open the hatch/
trunk from the inside.
Vehicle Security
This vehicle has theft-deterrent features;
however, they do not make the vehicle
impossible to steal.
Vehicle Alarm System
This vehicle has a theft-deterrent alarm
system.
The indicator light, on the instrument panel
near the windshield, indicates the status of
the system.
Off :Alarm system is disarmed.
On Solid : Vehicle is secured during the
delay to arm the system.
Fast Flash : Vehicle is unsecured. A door, the
hood, or the hatch/trunk is open.
Slow Flash : Alarm system is armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the remote key.
.Use the Keyless Access system.
.With a door open, pressQon the
interior of the door.
3. After 30 seconds the alarm system will arm, and the indicator light will begin to
slowly flash indicating the alarm system
is operating. Pressing
Qon the remote
key a second time will bypass the
30-second delay and immediately arm
the alarm system.
The vehicle alarm system will not arm if the
doors are locked with the mechanical key.
If the driver door is opened without first
unlocking with the remote key, the horn will
chirp and the lights will flash to indicate
pre-alarm. If the vehicle is not started,
or the door is not unlocked by pressing
K
on the remote key during the 10-second
pre-alarm, the alarm will be activated.
The alarm will also be activated if the
passenger door, the hatch/trunk, or the
hood is opened without first disarming the
system. When the alarm is activated, the

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 23
turn signals flash and the horn sounds for
about 30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn off the
alarm if it has been activated, do one of the
following:
.PressKon the remote key.
.Unlock the vehicle using the Keyless
Access system.
.Start the vehicle.
To avoid setting off the alarm by accident:
.Lock the vehicle after all occupants have
left the vehicle and both doors are closed.
.Always unlock a door with the remote
key or use the Keyless Access system.
Unlocking the driver door with the key will
not disarm the system or turn off the alarm.
How to Detect a Tamper Condition
IfKis pressed on the remote key and the
horn chirps and the lights flash three times,
a previous alarm occurred while the system
was armed. If the alarm has been activated, a message
will appear on the DIC.
Inclination Sensor and Intrusion Sensor
In addition to the standard theft-deterrent
system features, this system may also have
an inclination sensor and intrusion sensor.
The inclination sensor can activate the alarm
if it senses movement of the vehicle, such
as a change in vehicle orientation.
The intrusion sensor monitors the vehicle
interior, and can activate the alarm if it
senses unauthorized entry into the vehicle’s
interior. Do not allow passengers or pets to
remain in the vehicle when the intrusion
sensor is activated.
Before arming the theft-deterrent system
and activating the intrusion sensor:
.Make sure both doors and windows are
completely closed.
.Secure any loose items such as
sunshades.
.Make sure there are no obstructions
blocking the sensors.
Intrusion and Inclination Sensors Disable
Switch
It is recommended that the intrusion and
inclination sensors be deactivated if pets are
left in the vehicle or if the vehicle is being
transported.
When the roof panel is off, or the
convertible top is down, the intrusion
system is turned off.
With the vehicle turned off, press
oon the
overhead console, next to OnStar. The
indicator light will display momentarily,
indicating that these sensors have been
disabled until the next time the alarm
system is armed.
Immobilizer
See Radio Frequency Statement 0316.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
24 Keys, Doors, and Windows
Immobilizer Operation
The vehicle has a passive theft-deterrent
system.
The security light comes on in the
instrument cluster if there is a problem with
arming or disarming the theft-deterrent
system. This light also comes on briefly
when the engine is started.
The system is automatically armed when
the ignition is turned off.
The immobilization system is disarmed
when the ignition is turned on or placed in
ACC/ACCESSORY and a valid remote key is
found in the vehicle.
You do not have to manually arm or disarm
the system.
The system has one or more remote keys
that are matched to an immobilizer control
unit in the vehicle. Only a correctly matched
remote key starts the vehicle. The vehicle
may not start if the remote key is damaged.If the engine does not start and the security
light comes on, there may be a problem
with the immobilizer system. Try starting
the vehicle again.
If the vehicle does not start and the remote
key appears to be undamaged, try another
remote key. Or, place the remote key in the
cupholder backup location. See
Remote
Keyless Entry (RKE) System Operation 07.
If the engine still does not start with the
other remote key, or with the remote key in
the cupholder backup location, the vehicle
needs service. If the engine does start, the
first remote key may be faulty. See your
dealer or have a new remote key
programmed to the vehicle.
The immobilizer system can learn new or
replacement remote keys. Up to eight
remote keys can be programmed for the
vehicle. To program additional remote keys,
see “Programming Remote Keys to the
Vehicle” underRemote Keyless Entry (RKE)
System Operation 07.
Do not leave the remote key or device that
disarms or deactivates the theft-deterrent
system in the vehicle.
Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things, like
other vehicles, look farther away than
they really are. If you cut too sharply
into the right lane, you could hit a
vehicle on the right. Check the inside
mirror or glance over your shoulder
before changing lanes.
The passenger side mirror is convex shaped.
A convex mirror's surface is curved so more
can be seen from the driver seat.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 33
2. Insert the roof into the trunk with therear end first and position the rear pins
into the lower receivers. Be careful not
to hit the roof on the carpet of the
trunk.
Upper Receivers
3. When in place, the roof panel will rest on the upper receivers.
{Warning
Do not push from the sides of the roof
panel when seating the panel into the
upper receivers for storage. Pushing from
the sides may result in injury from
pinched fingers. Only push along the top
edge of the roof panel.
4. Place palms along the top edge of the roof panel and push with a quick
forward motion until the roof panel locks
into the upper receivers. Gently pull
rearward on the roof to ensure the roof
is secure.
Installing the Roof Panel
{Warning
An improperly attached roof panel may
fall into or fly off the vehicle. You or
others could be injured. After installing
the roof panel, always check that it is
firmly attached by pushing up on the
underside of the panel. Check now and
then to be sure the roof panel is firmly
in place.
Caution
Installing the roof with the release
handles in the closed position could cause
damage to the interior trim. Always
move handles to the open position when
installing the roof.
It is easier if two people install the roof
panel.
To install: 1. Shift transmission into P (Park).
2. Turn the ignition off and set the parking brake.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
34 Keys, Doors, and Windows
3. Grasp the roof panel and pull toward therear of the vehicle until it separates from
the upper receivers, being careful not to
hit the sides of the trunk. Carefully lift
the roof panel out of the trunk.
4. Carefully place the roof panel over the top of the vehicle.
5. Position the rear edge of the roof panelnext to the weatherstrip on the back of
the roof opening. Then align and fit the
pins at the rear of the roof panel inside
the openings in the rear overhead
weatherstrip. Gently lower the front
edge of the roof panel to the front of
the roof opening. 6. Check that the weatherstripping on each
side of the roof panel is under the panel.
7. Make sure the front release handles are in the fully open position.
8. Push the roof firmly downward to engage the pins.
9. Turn the front release handles inward so that they fully latch in the closed
position. It is critical that the handles
fully latch.
10. Push back and up on the rear release handle to insert the hook in the loop.
11. Push and pull the roof panel up and down and side to side to ensure the roof
panel is securely installed.
Maintaining the Roof Panel
Caution
Using glass cleaner on a painted roof
panel could damage the panel. The
repairs would not be covered by the
vehicle warranty. Do not use glass
cleaner on the painted roof panel.
When cleaning, removing, and/or storing the
roof panel:
.Flush with water to remove dust and dirt,
then dry the panel.
.Do not use abrasive cleaning materials on
the panel.
Convertible Top
If equipped with a convertible top, review
the following before operating:
{Warning
Components under the tonneau, close to
the engine, can get hot from running the
engine. To help avoid the risk of burning
unprotected skin, never touch these
components until they have cooled, and
always use a glove or towel to avoid
direct skin contact.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Keys, Doors, and Windows 37
.If the top has recently been opened and
closed repeatedly, it will be temporarily
disabled. A DIC message displays. Normal
operation will be restored within
10 minutes after the system has cooled.
.If the vehicle battery is low, the top
operation may be disabled. Try to start
the vehicle. A DIC message displays.
.If the battery has recently been
reconnected or if the vehicle has been
jump started, the top may not operate
until the power windows have been
programmed. Complete the power
window programming procedure. See
Power Windows029.
Other features may be affected while
operating the convertible top:
.If you start the vehicle while using the
remote key to open the convertible top,
the convertible top will halt the motion.
After starting the vehicle, use the
convertible top switch inside the vehicle
to continue the top motion.
.The windows cannot close while the top
is moving.
.When driving with the top not fully
secured, chimes can be heard above
50 km/h (31 mph).
.The Rear Camera Mirror will not work on the
convertible with the top down. Use
the tab to switch to standard mirror
display.
If the vehicle battery has been disconnected
and reconnected, if the fuses were pulled or
replaced, or if a jump start was performed, a
message indicating the top is not secure
may display. Press and release
Kand then
quickly press and hold
Mon the remote
key, or press and hold
Mon the driver
door switch to open the top, or pull and
hold
Mon the driver door switch to close
the top until this message clears.
Partial Top Cycling
If the convertible top operation is stopped
before completion, the top will temporarily
hold its position. Over time, the tonneau
may drift to a near closed position. Opening the Tonneau Cover
—Engine Access
{Warning
When opening or closing the tonneau
cover, people can be injured by the
moving parts of the tonneau cover.
Maintain visual contact with the tonneau
cover when it is in motion and keep
hands and objects away from the moving
parts.
To open the tonneau cover and access the
engine: 1. Make sure the vehicle is in P (Park).
2. Ensure the tonneau cover is clear of any objects.
3. The trunk and convertible top must be closed.
4. Keep visual contact with the vehicle. Press and release
Qon the remote key
and then quickly press and hold
M.
A chime will sound, a DIC message will
display, and the turn signals will
flash once.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Seats and Restraints 39
Seats and Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . 39
Front Seats
Power Seat Adjustment . . . . . . . . . . . . . . . . 39
Lumbar Adjustment . . . . . . . . . . . . . . . . . . . . 40
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 41
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Heated and Ventilated Front Seats . . . . . 44
Seat Belts
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . 46
How to Wear Seat Belts Properly . . . . . . 46
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 48
Seat Belt Use During Pregnancy . . . . . . . . 51
Seat Belt Extender . . . . . . . . . . . . . . . . . . . . . . 51
Safety System Check . . . . . . . . . . . . . . . . . . . . 51
Seat Belt Care . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Replacing Seat Belt System Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Airbag System
Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Where Are the Airbags? . . . . . . . . . . . . . . . . 54
When Should an Airbag Inflate? . . . . . . . . 54
What Makes an Airbag Inflate? . . . . . . . . . 55
How Does an Airbag Restrain? . . . . . . . . . . 55 What Will You See after an Airbag
Inflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Passenger Sensing System . . . . . . . . . . . . . . 57
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Adding Equipment to the Airbag-Equipped Vehicle . . . . . . . . . . . . . . 60
Airbag System Check . . . . . . . . . . . . . . . . . . . 61
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Child Restraints
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Infants and Young Children . . . . . . . . . . . . . 62
Child Restraint Systems . . . . . . . . . . . . . . . . 64
Lower Anchors and Tethers for Children(LATCH System) . . . . . . . . . . . . . . . . . . . . . . 66
Securing Child Restraints . . . . . . . . . . . . . . . 66
Head Restraints
The vehicle's front seats have head restraints
in the outboard seating positions that
cannot be adjusted.
The front seat outboard head restraints are
not removable.
Front Seats
Power Seat Adjustment
{Warning
The power seats will work with the
ignition off. Children could operate the
power seats and be injured. Never leave
children alone in the vehicle.
{Warning
You can lose control of the vehicle if you
try to adjust a driver seat while the
vehicle is moving. Adjust the driver seat
only when the vehicle is not moving.