2021 CHEVROLET BOLT EV wheel

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
Driving and Operating 167
.Turn on and stay on when either system
is not working.
If either system fails to turn on or to
activate, a message displays in the Driver
Information Center (DIC), and
dcomes on
and stays on to indicate that the system is
inactive and is not assisting the driver in
maintaining control. The vehicle is safe to
drive, but driving should be adjusted
accordingly.
If
dcomes on and stays on:
1. Stop the vehicle.
2. Turn the vehicle off and wait 15 seconds.
3. Start the vehicle.
Drive the vehicle. If
dcomes on and stays
on, the vehicle may need more time to
diagnose the problem. If the condition
persists, see your dealer.
Turning the Systems Off and On
Caution
Do not repeatedly brake or accelerate
heavily when TCS is off. The vehicle
driveline could be damaged.
To turn off only TCS, press and release
g.
The traction off light
idisplays in the
instrument cluster.
To turn TCS on again, press and release
g.
The traction off light
idisplayed in the
instrument cluster will turn off. If TCS is limiting wheel spin when
gis
pressed, the system will not turn off until
the wheels stop spinning.
To turn off both TCS and StabiliTrak/ESC,
press and hold
guntil the traction off light
iand StabiliTrak/ESC OFF lightgcome on
and stay on in the instrument cluster.
StabiliTrak can only be disabled below
56 km/h (35 mph).
To turn TCS and StabiliTrak/ESC on again,
press and release
g. The traction off light
iand StabiliTrak/ESC OFF lightgin the
instrument cluster turn off.
Adding accessories can affect the vehicle
performance. See Accessories and
Modifications 0197.
Cruise Control
The cruise control lets the vehicle maintain a
speed of about 40 km/h (25 mph) or more
without keeping your foot on the
accelerator. Cruise control does not work at
speeds below 40 km/h (25 mph).

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
168 Driving and Operating
{Warning
Cruise control can be dangerous where
you cannot drive safely at a steady
speed. Do not use cruise control on
winding roads or in heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could lose
control. Do not use cruise control on
slippery roads.
With the Traction Control System (TCS) or
StabiliTrak/Electronic Stability Control (ESC),
the system may begin to limit wheel spin
while you are using cruise control. If this
happens, the cruise control will
automatically disengage. See Traction
Control/Electronic Stability Control 0166.
If a collision alert occurs when cruise control
is activated, cruise control is disengaged. See
Forward Collision Alert (FCA) System 0174.
When road conditions allow you to safely
use it again, cruise control can be turned
back on.
If the brakes or the Regen on Demand
paddle are applied, cruise control
disengages. Cruise control will disengage if either TCS or
StabiliTrak/ESC is turned off.
5:
Press to turn the cruise control system
on and off. A white indicator comes on in
the instrument cluster when cruise is
turned on.
*: Press to disengage cruise control
without erasing the set speed from memory.
+RES : If there is a set speed in memory,
press briefly to resume that speed or press
and hold to accelerate. If cruise control is
already active, use to increase vehicle speed. −SET :
Press briefly to set the speed and
activate cruise control. If cruise control is
already active, use to decrease vehicle
speed.
Setting Cruise Control
If
5is on when not in use, −SET or +RES
could get bumped and go into cruise when
not desired. Keep
5off when cruise is not
being used.
To set a speed:
1. Press
5to turn the cruise system on.
2. Get up to the desired speed.
3. Press and release −SET. The desired set
speed briefly appears in the instrument
cluster.
4. Remove foot from the accelerator pedal.
The cruise control indicator on the
instrument cluster turns green after cruise
control has been set to the desired speed.
See Instrument Cluster 079.
Resuming a Set Speed
If the cruise control is set at a desired speed
and then the brakes are applied or
*is
pressed, the cruise control is disengaged
without erasing the set speed from memory.

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
Driving and Operating 175
Tailgating Alert
The vehicle ahead indicator will display
amber when you are following a detected
vehicle ahead much too closely.
Selecting the Alert Timing
The Collision Alert control is on the steering
wheel. Press
[to set the FCA timing to
far, medium, or near. The first button press
shows the current control setting on the
DIC. Additional button presses will change
this setting. The chosen setting will remain
until it is changed and will affect the timing
of both the Collision Alert and the Tailgating
Alert features. The timing of both alerts will
vary based on vehicle speed. The faster the
vehicle speed, the farther away the alert will
occur. Consider traffic and weather
conditions when selecting the alert timing.
The range of selectable alert timing may not
be appropriate for all drivers and driving
conditions.
Following Distance Indication
The following distance to a moving vehicle
you are following is indicated in following
time in seconds on the Driver Information
Center (DIC). The minimum following time is 0.5 seconds
away. If there is no vehicle detected ahead,
or the vehicle ahead is out of sensor range,
dashes will be displayed.
Unnecessary Alerts
FCA may provide unnecessary alerts to
turning vehicles, vehicles in other lanes,
objects that are not vehicles, or shadows.
These alerts are normal operation and the
vehicle does not need service.
Cleaning the System
If the FCA system does not seem to operate
properly, this may correct the issue:
.Clean the outside of the windshield in
front of the rearview mirror.
.Clean the entire front of the vehicle.
.Clean the headlamps.
Automatic Emergency
Braking (AEB)
If the vehicle has Forward Collision Alert
(FCA), it also has AEB, which includes
Intelligent Brake Assist (IBA). When the
system detects a vehicle ahead in your path
that is traveling in the same direction that
you may be about to crash into, it can
provide a boost to braking or automaticallybrake the vehicle. This can help avoid or
lessen the severity of crashes when driving
in a forward gear. Depending on the
situation, the vehicle may automatically
brake moderately or hard. This automatic
emergency braking can only occur if a
vehicle is detected. This is shown by the FCA
vehicle ahead indicator being lit. See
Forward Collision Alert (FCA) System
0174.
The system works when driving in a forward
gear between 8 km/h (5 mph) and 80 km/h
(50 mph). It can detect vehicles up to
approximately 60 m (197 ft).
{Warning
AEB is an emergency crash preparation
feature and is not designed to avoid
crashes. Do not rely on AEB to brake the
vehicle. AEB will not brake outside of its
operating speed range and only responds
to detected vehicles.
AEB may not:
.Detect a vehicle ahead on winding or
hilly roads.
.Detect all vehicles, especially vehicles
with a trailer, tractors, muddy
vehicles, etc. (Continued)

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
180 Driving and Operating
180 km/h (112 mph). It may assist by gently
turning the steering wheel if the vehicle
approaches a detected lane marking. It may
also provide a Lane Departure Warning
(LDW) alert if the vehicle crosses a detected
lane marking. LKA can be overriden by
turning the steering wheel. This system is
not intended to keep the vehicle centered in
the lane. LKA will not assist and alert if the
turn signal is active in the direction of lane
departure, or if it detects that you are
accelerating, braking or actively steering.
{Warning
The LKA system does not continuously
steer the vehicle. It may not keep the
vehicle in the lane or give a Lane
Departure Warning (LDW) alert, even if a
lane marking is detected.
The LKA and LDW systems may not:
.Provide an alert or enough steering
assist to avoid a lane departure or
crash.
.Detect lane markings under poor
weather or visibility conditions. This
can occur if the windshield or
headlamps are blocked by dirt, snow,(Continued)
Warning (Continued)
or ice; if they are not in proper
condition; or if the sun shines directly
into the camera.
.Detect road edges.
.Detect lanes on winding or hilly roads.
If LKA only detects lane markings on one
side of the road, it will only assist or
provide an LDW alert when approaching
the lane on the side where it has
detected a lane marking. Even with LKA
and LDW, you must steer the vehicle.
Always keep your attention on the road
and maintain proper vehicle position
within the lane, or vehicle damage,
injury, or death could occur. Always keep
the windshield, headlamps, and camera
sensors clean and in good repair. Do not
use LKA in bad weather conditions or on
roads with unclear lane markings, such as
construction zones.
{Warning
Using LKA while towing a trailer or on
slippery roads could cause loss of control
of the vehicle and a crash. Turn the
system off.
How the System Works
LKA uses a camera sensor installed on the
windshield ahead of the rearview mirror to
detect lane markings. It may provide brief
steering assist if it detects an unintended
lane departure. It may further provide an
audible alert or the driver seat may pulse
indicating that a lane marking has been
crossed.
To turn LKA on and off, press
Aon the
steering wheel. If equipped, the indicator
light on the button comes on when LKA is
on and turns off when LKA is disabled.
When on,
Ais white, if equipped,
indicating that the system is not ready to
assist.
Ais green if LKA is ready to
assist. LKA may assist by gently turning the
steering wheel if the vehicle approaches a
detected lane marking.
Ais amber when
assisting. It may also provide a Lane
Departure Warning (LDW) alert by flashing

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
196 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 197
California Proposition 65 Warning . . . . . 197
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 197
Accessories and Modifications . . . . . . . . . 197
Vehicle Checks
Doing Your Own Service Work . . . . . . . . 198
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Underhood Compartment Overview . . . 200
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 201
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Battery - North America . . . . . . . . . . . . . . . 204
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Wiper Blade Replacement . . . . . . . . . . . . . 206
Windshield Replacement . . . . . . . . . . . . . . 207
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 208
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 208
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . 209 High Intensity Discharge (HID)
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . 209
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 209
Electrical System
High Voltage Devices and Wiring . . . . . . 210
Electrical System Overload . . . . . . . . . . . . . 210
Fuses and Circuit Breakers . . . . . . . . . . . . . 211
Underhood Compartment Fuse Block . . . 211
Instrument Panel Fuse Block . . . . . . . . . . . 214
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 216
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Self-Sealing Tires . . . . . . . . . . . . . . . . . . . . . . . 217
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . 217
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 218
Tire Terminology and Definitions . . . . . . 219
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Tire Pressure Monitor System . . . . . . . . . 222
Tire Pressure Monitor Operation . . . . . . . 223
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 226
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 226
When It Is Time for New Tires . . . . . . . . 227
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 228
Different Size Tires and Wheels . . . . . . . 229
Uniform Tire Quality Grading . . . . . . . . . 229 Wheel Alignment and Tire Balance . . . . 231
Wheel Replacement . . . . . . . . . . . . . . . . . . . . 231
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 232
Tire Sealant and Compressor Kit . . . . . . . 232
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . . . . . . . . . . 238
Jump Starting
Jump Starting - North America . . . . . . . . 238
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . 240
Recreational Vehicle Towing . . . . . . . . . . . 242
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
Vehicle Care 203
{Warning
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to a crash. When the
brake wear warning sound is heard, have
the vehicle serviced.
Caution
Continuing to drive with worn-out brake
linings could result in costly brake
repairs.
Some driving conditions or climates can
cause a brake squeal when the brakes are
first applied, clearing up following several
applications. This does not mean something
is wrong with the brakes.
Properly torqued wheel nuts are necessary
to help prevent brake pulsation. When tires
are rotated, inspect brake linings for wear
and evenly tighten wheel nuts in the proper
sequence to torque specifications. See
Capacities and Specifications 0262.
Brake pads should be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not
return to normal height, or if there is a
rapid increase in pedal travel. This could be
a sign that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts with
new, approved replacement parts. If this is
not done, the brakes may not work
properly. The braking performance can
change in many ways if the wrong brake
parts are installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir is filled
with GM approved DOT 4 brake fluid as
indicated on the reservoir cap. See
Underhood Compartment Overview 0200
for the location of the reservoir. Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum marks
on the brake fluid reservoir.
There are only two reasons why the brake
fluid level in the reservoir may go down:
.Normal brake lining wear. When new
linings are installed, the fluid level goes
back up.
.A fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid reservoir cap
and the area around the cap before
removing it.
Do not top off the brake fluid. Adding fluid
does not correct a leak. If fluid is added
when the linings are worn, there will be too
much fluid when new brake linings are
installed. Add or remove fluid, as necessary,
only when work is done on the brake
hydraulic system.
When the brake fluid falls to a low level,
the brake warning light comes on. See Brake
System Warning Light 085.

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
Vehicle Care 215
The instrument panel fuse block is on the
left side of the instrument panel. To access
the fuses, open the fuse panel door by
pulling out.
To reinstall the door, insert the top tab first,
then push the door back into its original
location.Fuses Usage
F01 Video processing module
F02 Indicator light solar sensor
F03 Side blind zone alert
F04 Passive entry, passive start F05 CGM
F06 Body control module 4 F07 Body control module 3
F08 Body control module 2
F09 Body control module 1 F10 Trailer interface module 1 F11 Amplifier
F12 Body control module 8
F13 Data link connector 1
F14 Automatic parking assist F15 - Fuses
Usage
F16 Single power inverter
module 1
F17 Body control module 6
F18 Body control module 5
F19 –
F20 –
F21 –
F22 –
F23 USB
F24 Wireless charging module F25 Reflected LED alert display
F26 Heated steering wheel F27 CGM 2
F28 Instrument cluster 2
F29 Trailer interface module 2
F30 - F31 OnStar
F32 Virtual keypass sensor
F33 Heating, ventilation, and
air conditioning module Fuses
Usage
F34 Virtual keypass module F35 Instrument cluster 1
F36 Radio F37 –
F38 –
F39 –
F40 –
F41 –
F42 –
F43 Body control module 7
F44 Sensing and diagnostic
module
F45 Front camera module
F46 Vehicle integration control
module
F47 Single power inverter
module 2
F48 -
F49 Auxiliary jack F50 Steering wheel controls

Chevrolet Bolt EV Owner Manual (GMNA-Localizing-U.S./Canada-
14637856) - 2021 - CRC - 10/2/20
216 Vehicle Care
FusesUsage
F51 Steering wheel controls
backlighting
F52 -
F53 Auxiliary power outlet
F54 –
F55 Logistic
F56 –
F57 –
F59 –
Relays Usage
F58 Logistics relay
F60 Accessory/Retained
accessory power relay
Wheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits
0153.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
.Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact —such as when
hitting a pothole. Keep tires at the
recommended pressure.
(Continued)
Warning (Continued)
.Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
.Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.Improperly repaired tires can cause
a crash. Only the dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
.Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
All-Season Tires
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original