climate control CHEVROLET CORVETTE C8 2021 User Guide

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Climate Controls 173
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 - 9/22/20
174 Climate Controls
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 - 9/22/20
176 Driving and Operating
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 0195.
.For recommended shift speeds, see Dual
Clutch Transmission 0197.
Premium Fuel
Use the recommended fuel. See
Recommended Fuel 0225.
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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Driving and Operating 187
.Turn off cruise control.
.Turn on Weather Mode. SeeDriver Mode
Control 0207.
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 0196.
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.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to
free the vehicle when stuck in sand, mud,
ice, or snow.
If stuck too severely for the traction system
to free the vehicle, turn the traction system
off and use the rocking method. See
Traction Control/Electronic Stability Control
0 205.
{Warning
If the vehicle's tires spin at high speed,
they can explode, and you or others
could be injured. The vehicle can
overheat, causing an engine compartment
fire or other damage. Spin the wheels as
little as possible and avoid going above
56 km/h (35 mph).
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right to
clear the area around the front wheels. Turn
off any traction system. Shift back and forth
between R (Reverse) and a low forward gear,
spinning the wheels as little as possible. To
prevent transmission wear, wait until the
wheels stop spinning before shifting gears.
Release the accelerator pedal while shifting,

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-
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Index 329
Automatic (cont'd)Headlamp System . . . . . . . . . . . . . . . . . . . . . 106
Auxiliary Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Avoiding Untrusted Media Devices . . . . . . . 120
B
Battery Exterior Lighting Battery Saver . . . . . . . . 109
Power Protection . . . . . . . . . . . . . . . . . . . . . . 109
Battery - North America . . . . . . . . . . . . . 251, 278
Blade Replacement, Wiper . . . . . . . . . . . . . . . 252
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . 204
System Warning Light . . . . . . . . . . . . . . . . . . 87
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 190
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 . . . . . . . . . . . . . . . . . . . . . . . . 196
Hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 186
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . .72
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Charging System Light . . . . . . . . . . . . . . . . . . . . 85
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 . . . . . . . . . . . . . . . . . . . . . . . . 170
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 79
Collision Damage Repair . . . . . . . . . . . . . . . . . .314
Compartment Underhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Competitive Driving Mode . . . . . . . . . . . . . . . .214
Composite Materials . . . . . . . . . . . . . . . . . . . . . . 191
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 326
Control
Hill Rollback . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Traction and Electronic Stability . . . . . . . 205

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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330 Index
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . 177
ControlsSteering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 113
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Convertible Top . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 83
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Courtesy Transportation Program . . . . . . . . . 313
Coverage Explanations . . . . . . . . . . . . . . . . . . . 136
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .218 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 310
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Text Telephone (TTY) Users . . . . . . . . . . . . 310
Customer Information Publications Ordering Information . . . . . 316
Customer Satisfaction Procedure . . . . . . . . . 308
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . .314
Danger, Warning, and Caution . . . . . . . . . . . . . .2 Data Collection
Infotainment System . . . . . . . . . . . . . . . . . . 319
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Data Recorder Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Data Recorders, Event . . . . . . . . . . . . . . . . . . . .318
Database Coverage Explanations . . . . . . . . . 136
Daytime Running Lamps (DRL) . . . . . . . . . . . 106
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . 177
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 327
Differential, Limited-Slip . . . . . . . . . . . . . . . . . . 217
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 176
Diversity Antenna System . . . . . . . . . . . . . . . 120
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 307
Driver
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Driver Assistance Systems . . . . . . . . . . . . . . . 220
Driver Information Center (DIC) . . . . . . . . . . . 92
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 207
Driving Better Fuel Economy . . . . . . . . . . . . . . . . . . . 176 Driving (cont'd)
Competitive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Hill and Mountain Roads . . . . . . . . . . . . . . 186
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 187
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 179
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 178
Track Events and Competitive . . . . . . . . . . 179
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 188
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Dual Clutch Transmission . . . . . . . . . . . . . . . . 197 Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 200
Dual Clutch Transmission Fluid . . . . . . . . . . . .241
Dual Clutch Transmission Fluid Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 203
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 204
Electric Parking Brake Light . . . . . . . . . . . . . . . 88
Electrical Equipment, Add-On . . . . . . . . . . . . 228
Electrical SystemFuses and Circuit Breakers . . . . . . . . . . . . . 255
Instrument Panel Fuse Block . . . . . . . . . . . 255