2021 CHEVROLET CORVETTE climate control

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/15/21
172 Climate Controls
5. Air Delivery Mode Controls
6. Fan Control
7.
O(Power)
8. A/C (Air Conditioning)
9. Recirculation
10. Defrost
11. Rear Window Defogger
12. Passenger Temperature Control
Climate Control Display
1. Driver and Passenger Temperature Settings
2. Fan Control
3. Driver and Passenger Temperature Controls 4. Sync (Synchronized Temperature)
5. Recirculation
6. Air Delivery Mode Controls
7. Auto (Automatic Operation)
8. A/C (Air Conditioning)
9. On/Off (Power)
The fan, air delivery mode, air conditioning,
driver and passenger temperatures, and Sync
settings can be controlled by touching
CLIMATE on the infotainment Home Page or
the climate button in the climate control
display application tray. A selection can then
be made on the front climate control page
displayed. See the infotainment manual.
Climate Control Status Display
The climate control status display appears
briefly when the center stack climate
controls are adjusted.
Automatic Operation
The system automatically controls the fan
speed, air delivery, air conditioning, and
recirculation in order to heat or cool the
vehicle to the desired temperature:
When AUTO is pressed, all four functions
operate automatically. Each function can
also be manually set and the setting is
displayed. Functions not manually set will
continue to be automatically controlled,
even if the AUTO indicator is not lit.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/15/21
Climate Controls 173
For automatic operation:1. Press AUTO.
2. Set the temperature. Allow the system time to stabilize. Adjust the temperature
as needed for best comfort.
Manual Operation
O:Press to turn the fan off or on.
hori:Press to increase or decrease the
fan speed.
Driver and Passenger Temperature
Controls : The temperature can be adjusted
separately for the driver and passenger.
SYNC : Press to link the passenger
temperature setting to the driver setting.
The SYNC indicator light will turn on. When
the passenger setting is adjusted, the SYNC
indicator light will turn off.
Air Delivery Mode Control : Press
Y,[,
or
zto change the direction of the airflow.
Any combination of the three controls can
be selected. An indicator light comes on in
the selected mode button.
Changing the mode cancels the automatic
operation and the system goes into manual
mode. Press AUTO to return to automatic
operation. To change the current mode, select one or
more of the following:
Y:
Air is directed to the a/c outlets.
[:Air is directed to the floor outlets,
with some air directed to the windshield,
and side window outlets.
z: Air is directed to the windshield and
side window outlets.
0MAX : Air is directed to the windshield
and the fan runs at a higher speed if not
already above a medium fan speed. This
mode overrides the previous mode selected
and clears fog or frost from the windshield
more quickly. When the control is pressed
again, the system returns to the previous
mode setting and fan speed.
For best results, clear all snow and ice from
the windshield before defrosting.
@: Press to turn on recirculation. An
indicator light comes on. Air is recirculated
to quickly cool the inside of the vehicle.
It can also be used to help reduce outside
air and odors that enter the vehicle. Avoid using recirculation for long periods of
time in cold or damp conditions. Using
recirculation in cold or damp conditions can
result in window fogging.
A/C :
Press to turn the air conditioning on
or off. An indicator light comes on to show
that the air conditioning is enabled. If the
fan is turned off, the air conditioner will not
run. The A/C light will stay on even if the
outside temperatures are below freezing.
If the A/C is turned off, the air temperature
coming through the climate control system
may be warmer than the ambient
temperature. It is recommended to use auto
climate control to maintain comfort.
Rear Window Defogger
1REAR : If equipped, press to turn the
rear window defogger on or off. An indicator
light on the button comes on to show that
the rear window defogger is on.
The rear window defogger only works when
the engine is running. The defogger turns
off if the ignition is turned off or to ACC/
ACCESSORY.
If equipped with heated outside mirrors,
press
1REAR to turn them on or off. See
Heated Mirrors 026.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/15/21
174 Climate Controls
Caution
Using a razor blade or sharp object to
clear the inside rear window can damage
the rear window defogger. Repairs would
not be covered by the vehicle warranty.
Do not clear the inside rear window with
sharp objects.
Remote Start Climate Control Operation :
If equipped with remote start, the climate
control system may run when the vehicle is
started remotely. If equipped with heated or
ventilated seats or a heated steering wheel,
these features may come on during a
remote start. See Remote Vehicle Start 012,
Heated and Ventilated Front Seats 044, and
Heated Steering Wheel 074.
Air Vents
Use the tab on the air outlets to change the
direction of the airflow or shut the outlet.
Operation Tips
.Clear away any ice, snow, or leaves from
the air inlets at the base of the
windshield that may block the flow of air
into the vehicle.
.Clear snow off the hood to improve
visibility and help decrease moisture
drawn into the vehicle.
.Use of non-GM approved hood deflectors
may adversely affect the performance of
the system.
.Keep the area around the base of the
instrument panel console and air path
under the seats clear of objects to help
circulate the air inside of the vehicle more
effectively.
Maintenance
Passenger Compartment Air Filter
The passenger compartment air filter
reduces dust, pollen, and other airborne
irritants from outside air that are pulled into
the vehicle. Reductions in airflow, which
may occur more often in dusty areas,
indicate that the filter may need to be
replaced. See Maintenance Schedule 0293.
Caution
Driving without a passenger compartment
air filter in place can cause water and
small particles, like paper and leaves, to
be pulled into your climate control
(Continued)
Caution (Continued)
system which may cause damage to it.
Make sure you always replace the old
filter with a new one.
The passenger compartment air filter is
located under the hood between the battery
and windshield. See Underhood
Compartment Overview 0234.
To check or replace the air filter:
1. Release the four clips for the left and right outer covers.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/15/21
Climate Controls 175
2. Release the five clips and remove theouter cover.
3. Press two push tabs on the top and onthe bottom of the cabin air filter cover
and remove the cover.
4. Remove the air filter.
5. Install the new air filter and cover.
6. Install the outer cover.
7. Install the right and left outer covers.
Service
All vehicles have a label underhood that
identifies the refrigerant used in the vehicle.
The refrigerant system should only be
serviced by trained and certified technicians.
The air conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be replaced
by a new evaporator to ensure proper and
safe operation.
During service, all refrigerants should be
reclaimed with proper equipment. Venting
refrigerants directly to the atmosphere is
harmful to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite, or other
health-based concerns.
The air conditioning system requires periodic
maintenance. See Maintenance Schedule
0 293.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/10/21
Driving and Operating 177
Driving Information
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here
are some driving tips to get the best fuel
economy possible:
.Set the climate controls to the desired
temperature after the engine is started,
or turn them off when not required.
.Avoid fast starts and accelerate smoothly.
.Brake gradually and avoid abrupt stops.
.Avoid idling the engine for long periods
of time.
.When road and weather conditions are
appropriate, use cruise control.
.Always follow posted speed limits or
drive more slowly when conditions
require.
.Keep vehicle tires properly inflated.
.Combine several trips into a single trip.
.Replace the vehicle's tires with the same
TPC Spec number molded into the tire's
sidewall near the size.
.Follow recommended scheduled
maintenance.
.Using Tour mode rather than Sport or
Track modes, will result in better Active
Fuel Management operation. SeeActive
Fuel Management 0197.
.For recommended shift speeds, see Dual
Clutch Transmission 0198.
Premium Fuel
Use the recommended fuel. See
Recommended Fuel 0226.
Distracted Driving
Distraction comes in many forms and can
take your focus from the task of driving.
Exercise good judgment and do not let other
activities divert your attention away from
the road. Many local governments have
enacted laws regarding driver distraction.
Become familiar with the local laws in
your area.
To avoid distracted driving, keep your eyes
on the road, keep your hands on the
steering wheel, and focus your attention on
driving.
.Do not use a phone in demanding driving
situations. Use a hands-free method to
place or receive necessary phone calls.
.Watch the road. Do not read, take notes,
or look up information on phones or
other electronic devices.
.Designate a front seat passenger to
handle potential distractions.
.Become familiar with vehicle features
before driving, such as programming
favorite radio stations and adjusting
climate control and seat settings. Program
all trip information into any navigation
device prior to driving.
.Wait until the vehicle is parked to
retrieve items that have fallen to the
floor.
.Stop or park the vehicle to tend to
children.
.Keep pets in an appropriate carrier or
restraint.
.Avoid stressful conversations while
driving, whether with a passenger or on a
cell phone.
{Warning
Taking your eyes off the road too long or
too often could cause a crash resulting in
injury or death. Focus your attention on
driving.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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188 Driving and Operating
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. SeeTraction
Control/Electronic Stability Control 0206.
.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) 0204.
.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.
.Turn off cruise control.
.Turn on Weather Mode. See Driver Mode
Control 0208.
Blizzard Conditions
Stop the vehicle in a safe place and signal
for help. Stay with the vehicle unless there
is help nearby. If possible, use Roadside
Assistance. See Roadside Assistance Program
0 311. To get help and keep everyone in the
vehicle safe:
.Turn on the hazard warning flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust under the
vehicle. This may cause exhaust gases to
get inside. Engine exhaust contains
carbon monoxide (CO), which cannot be
seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking the
exhaust pipe.
(Continued)
Warning (Continued)
.Open a window about 5 cm (2 in) on
the vehicle side that is away from the
wind, to bring in fresh air.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to
circulate the air inside the vehicle and
set the fan speed to the highest
setting. See“Climate Control Systems.”
For more information about CO, see
Engine Exhaust 0197.
To save fuel, run the engine for short
periods to warm the vehicle and then shut
the engine off and partially close the
window. Moving about to keep warm also
helps.
If it takes time for help to arrive, when
running the engine, push the accelerator
pedal slightly so the engine runs faster than
the idle speed. This keeps the battery
charged to restart the vehicle and to signal
for help with the headlamps. Do this as
little as possible, to save fuel.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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276 Vehicle Care
The Uniform Tire Quality Grading
(UTQG) system does not apply to deep
tread, winter tires, compact spare tires,
tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General
Motors passenger cars and light trucks
may vary with respect to these grades,
they must also conform to federal
safety requirements and additional
General Motors Tire Performance
Criteria (TPC) standards.
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA Temperature A
All Passenger Car Tires Must Conform to
Federal Safety Requirements In Addition
To These Grades.
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlledconditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)
times as well on the government course
as a tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have
poor traction performance. Warning:
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.
Temperature
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel. Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup
and possible tire failure.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 2/10/21
328 Index
Automatic (cont'd)Headlamp System . . . . . . . . . . . . . . . . . . . . . 107
Auxiliary Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Avoiding Untrusted Media Devices . . . . . . . . 121
B
Battery Exterior Lighting Battery Saver . . . . . . . . 110
Power Protection . . . . . . . . . . . . . . . . . . . . . . 110
Battery - North America . . . . . . . . . . . . . 251, 278
Blade Replacement, Wiper . . . . . . . . . . . . . . . 253
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . .124
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . 205
System Warning Light . . . . . . . . . . . . . . . . . . 88
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 192
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Bulb Replacement Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 254
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 274
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
California Perchlorate Materials Requirements . . . 231
California Proposition
65 Warning . . . . . . . . . . . . . . . . . . . .231, 251, 278, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . 305
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 197
Hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 188
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . .72
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Charging System Light . . . . . . . . . . . . . . . . . . . . 86
Check Engine Light (Malfunction Indicator) . . . . 86
Child Restraints
Infants and Young Children . . . . . . . . . . . . . 62
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Child Restraints (cont'd)
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 171
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 80
Collision Damage Repair . . . . . . . . . . . . . . . . . .314
Compartment Underhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Competitive Driving Mode . . . . . . . . . . . . . . . . 215
Composite Materials . . . . . . . . . . . . . . . . . . . . . 192
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 325
Control
Hill Rollback . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Traction and Electronic Stability . . . . . . . 206