2021 CHEVROLET BOLT EV climate control

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
148 Driving and Operating
Vehicle Charging/Maintenance
Charging
Keep the vehicle plugged in, even when fully
charged, to keep the battery temperature
ready for the next drive. This is important
when outside temperatures are extremely
hot or cold.
Maintenance
Always keep the tires properly inflated and
the vehicle properly aligned.
The weight of excess cargo in the vehicle
affects efficiency and range. Avoid carrying
more than is needed.
Avoid unnecessary use of electrical
accessories. Power used for functions other
than propelling the vehicle will reduce EV
range.
Using a rooftop carrier will reduce efficiency
due to additional weight and drag.
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 haveenacted 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 mobile 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 mobile 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
mobile 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.
Refer to the Infotainment section for more
information on using that system, including
pairing and using a mobile phone.
Defensive Driving
Defensive driving means “always expect the
unexpected.” The first step in driving
defensively is to wear the seat belt.
.Assume that other road users
(pedestrians, bicyclists, and other drivers)
are going to be careless and make
mistakes. Anticipate what they might do
and be ready.
.Allow enough following distance between
you and the driver in front of you.
.Focus on the task of driving.

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
Vehicle Care 201
1. Windshield Washer Fluid Reservoir. SeeWasher Fluid 0202.
2. Cabin Heating Coolant Reservoir. See Cooling System 0201.
3. High Voltage Battery Coolant Reservoir. See Cooling System 0201.
4. HPDM (High Power Distribution Module).
5. APM (Accessory Power Module), OBCM (On-Board Charging Module).
6. Brake Fluid Reservoir. See Brake Fluid
0 203.
7. SPIM, APM, and Charger Module Coolant Reservoir. See Cooling System 0201.
8. Battery. See Battery - North America
0 204.
9. Underhood Compartment Fuse Block. Underhood Compartment Fuse Block
0211.
Cooling System
It is not necessary to regularly check coolant
unless a leak is suspected or an unusual
noise is heard. A coolant loss could indicate
a problem. Have it inspected and repaired
by your dealer.
The following explains the cooling systems
and how to check coolant levels.
.High Voltage Battery
.Single Power Inverter Module (SPIM),
Accessory Power Module (APM), and
Charger Module
.Cabin Heating
High Voltage Battery
During vehicle operation and also during
charging, the high voltage battery cells in
the vehicle are kept within a normal
operating temperature range. If the
temperature rises above this temperature,
the battery cooling system turns on the air
conditioning compressor and cools the
coolant until the correct temperature is
reached. If the temperature falls below this
temperature, a high voltage heater, located
outside the battery on a cradle, heats the
coolant until the correct temperature is
reached.
Single Power Inverter Module (SPIM),
Accessory Power Module (APM), and
Charger Module
The SPIM, APM, and charger module are
cooled using a separate coolant loop. These
modules are kept below a maximum
temperature. If the temperature rises above
this temperature, the electric cooling fan will
turn on to cool the coolant.
Cabin Heating
Cabin heating is maintained by coolant
heated by the Coolant Heater Control
Module (CHCM), separate from the power
electronics and battery coolant loops. This
module heats the coolant based on
temperature inputs from the cabin climate
control systems.
Hybrid Cooling System Pressure Caps
The hybrid cooling system reservoirs have
tamper resistant pressure caps. The coolant
should only be serviced by a qualified
technician.
Checking Coolant
The coolant needs to be replaced at the
appropriate interval. See Maintenance
Schedule 0253.
The coolant reservoirs are in the underhood
compartment. See Underhood Compartment
Overview 0200.

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
230 Vehicle Care
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 controlled
conditions 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 Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
282 Index
IndexA
Accessories and Modifications . . . . . . . . . . . 197
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . .158
Add-On Electrical Equipment . . . . . . . . . . . . . 195
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Additional Maintenance and Care . . . . . . . . 255
Agreements Trademarks and License . . . . . . . . . . . . . . . 134
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . 140
Air Conditioning Regular Operation . . . . . . .145
Air Filter, Passenger Compartment . . . . . . . 144
Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
How Does an Airbag Restrain? . . . . . . . . . . 42
Passenger Sensing System . . . . . . . . . . . . . . 44
What Makes an Airbag Inflate? . . . . . . . . . 42
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
When Should an Airbag Inflate? . . . . . . . . 41
Where Are the Airbags? . . . . . . . . . . . . . . . . 40
Airbags
Adding Equipment to the Vehicle . . . . . . . 47
Passenger Status Indicator . . . . . . . . . . . . . . 84
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 84
Servicing Airbag-Equipped Vehicles . . . . . . 47 Airbags (cont'd)
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 18
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 178
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 216
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Antilock Brake System (ABS) . . . . . . . . . . . . . 163
Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Apple CarPlay and Android Auto . . . . . . . . . 129
Armrest Rear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Assistance Program, Roadside . . . . . . . . . . . . 266
Assistance Systems for Driving . . . . . . . . . . . 173
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Theft-Deterrent Feature . . . . . . . . . . . . . . . . . 114
Automatic Climate Control System . . . . . . . . . . . . . . . . 140

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
284 Index
Climate Control SystemsAutomatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 79
Collision Damage Repair . . . . . . . . . . . . . . . . . 268
Compartment Underhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Compressor Kit, Tire Sealant . . . . . . . . . . . . . 232
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Connections
Connected Services . . . . . . . . . . . . . . . . . . . . 280
Control Traction and Electronic Stability . . . . . . . 166
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . 149
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Courtesy Transportation Program . . . . . . . . 267
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Cruise Control (cont'd)
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 265 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Text Telephone (TTY) Users . . . . . . . . . . . . 265
Customer Information
Publications Ordering Information . . . . . 270
Customer Satisfaction Procedure . . . . . . . . . 263
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 268
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . . . 109
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 148
Delayed Charging Override . . . . . . . . . . . . . . .185
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Devices
Auxiliary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 281
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 148
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Drive Unit Electric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Driver Assistance Systems . . . . . . . . . . . . . . . 169
Driver Efficiency Gauge . . . . . . . . . . . . . . . . . . . 82
Driver Information Center (DIC) . . . . . . . . . . . 99
Driver Selected Operating Modes . . . . . . . . 159
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . . 173
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Hill and Mountain Roads . . . . . . . . . . . . . . . 151
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 152
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 150
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 150
One-Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 153
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Driving for Better Energy Efficiency . . . . . . .147