2023 CHEVROLET BOLT EV brake light

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
Vehicle Care 219
{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 0277.
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 0216 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-
16404388) - 2023 - CRC - 3/7/22
Vehicle Care 231
A fuse puller is in the underhood
compartment fuse block.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
1 –
2 Power Window Rear
3 Cargo Lamp
4 Rechargeable Energy
Storage System 1
5 Power Seat Driver
7 –
8 –
9 –
10 –
11 Horn
12 –
13 Front Wiper Motor Driver
15 Front Wiper Motor
Co-driver
16 Electronic Brake Control
Module Supply Electronics
17 Rear Wiper Fuses
Usage
18 Liftgate
19 Seat Module Front
20 Washer 22 Linear Power Module
23 Electronic Brake Control
Module Supply Motor
24 Power Seat Lumbar
26 Transmission Range Control
Module
27 Aeroshutter
28 Auxiliary Oil Pump
29 Electric Brake Boost Motor
Source
30 Front Power Windows
31 In-panel Bussed Electrical
Center
32 Rear Window Defogger
33 Heated Exterior Rearview
Mirror
34 Pedestrian Friendly Alert
Function
35 – Fuses
Usage
36 –
37 Current Sensor
38 –/Humidity Sensor
39 Indicator Light Solar Sensor
40 Electric Brake Boost (ECU)
41 Power Line Communication
Module
42 Infant Only Supression
43 Window Switch
44 Rechargeable Energy
Storage System
45 Vehicle Integration Control
Module
46 Shifter Interface Board 47 Humidity Sensor
48 Shifter Interface Board
49 Interior Rearview Mirror 50 –
51 Electric Brake Boost
52 –
54 A/C Control Module

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
242 Vehicle Care
warning message also displays. The
malfunction light and DIC warning message
come on each time the vehicle is started
until the problem is corrected. Some of the
conditions that can cause these to come
on are:
.One of the road tires has been replaced
with the spare tire. The spare tire does
not have a TPMS sensor. The malfunction
light and DIC message should go off after
the road tire is replaced and the sensor
matching process is performed
successfully. See“TPMS Sensor Matching
Process” later in this section.
.The TPMS sensor matching process was
not done or not completed successfully
after rotating the tires. The malfunction
light and the DIC message should go off
after successfully completing the sensor
matching process. See "TPMS Sensor
Matching Process" later in this section.
.One or more TPMS sensors are missing or
damaged. The malfunction light and the
DIC message should go off when the
TPMS sensors are installed and the sensor
matching process is performed
successfully. See your dealer for service.
.Replacement tires or wheels do not match
the original equipment tires or wheels.
Tires and wheels other than those
recommended could prevent the TPMS
from functioning properly. See Buying
New Tires 0246.
.Operating electronic devices or being near
facilities using radio wave frequencies
similar to the TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning properly it
cannot detect or signal a low tire condition.
See your dealer for service if the TPMS
malfunction light and DIC message come on
and stay on.
Tire Fill Alert (If Equipped)
This feature provides visual and audible
alerts outside the vehicle to help when
inflating an underinflated tire to the
recommended cold tire pressure.
When the low tire pressure warning light
comes on: 1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated. The turn signal lamp will flash. When the recommended pressure is
reached, the horn sounds once and the
turn signal lamp will stop flashing and
briefly turn solid.
Repeat these steps for all underinflated tires
that have illuminated the low tire pressure
warning light.
{Warning
Overinflating a tire could cause the tire
to rupture and you or others could be
injured. Do not exceed the maximum
pressure listed on the tire sidewall. See
Tire Sidewall Labeling 0236 and
Vehicle Load Limits 0158.
If the tire is overinflated by more than
35 kPa (5 psi), the horn will sound multiple
times and the turn signal lamp will continue
to flash for several seconds after filling
stops. To release and correct the pressure,
while the turn signal lamp is still flashing,
briefly press the center of the valve stem.
When the recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash within
15 seconds after starting to inflate the tire,
the tire fill alert has not been activated or is
not working.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
Vehicle Care 243
If the hazard warning flashers are on, the
tire fill alert visual feedback will not work
properly.
The TPMS will not activate the tire fill alert
properly under the following conditions:
.There is interference from an external
device or transmitter.
.The air pressure from the inflation device
is not sufficient to inflate the tire.
.There is a malfunction in the TPMS.
.There is a malfunction in the horn or turn
signal lamps.
.The identification code of the TPMS
sensor is not registered to the system.
.The battery of the TPMS sensor is low.
If the tire fill alert does not operate due to
TPMS interference, move the vehicle about
1 m (3 ft) back or forward and try again.
If the tire fill alert feature is not working,
use a tire pressure gauge.
TPMS Sensor Matching Process
Each TPMS sensor has a unique
identification code. The identification code
needs to be matched to a new tire/wheel
position after rotating the vehicle’s tires or
replacing one or more of the TPMS sensors.
The TPMS sensor matching process should also be performed after replacing a spare
tire with a road tire containing the TPMS
sensor. The malfunction light and the DIC
message should go off when the vehicle has
been turned off and started again. The
sensors are matched to the tire/wheel
positions, using a TPMS relearn tool, in the
following order: driver side front tire,
passenger side front tire, passenger side rear
tire, and driver side rear. See your dealer for
service or to purchase a relearn tool.
A TPMS relearn tool can also be purchased.
See Tire Pressure Monitor Sensor Activation
Tool at www.gmtoolsandequipment.com or
call 1-800-GM TOOLS (1-800-468-6657).
There are two minutes to match the first
tire/wheel position, and five minutes overall
to match all four tire/wheel positions. If it
takes longer, the matching process stops
and must be restarted.
The TPMS sensor matching process is:
1. Set the parking brake.
2. Press POWEROto start the vehicle. See
Power Button 0161. 3. Make sure the Tire Pressure info page
option is turned on. The info pages on
the DIC can be turned on and off
through the Options menu. See Driver
Information Center (DIC) 099.
4. Use the DIC controls on the right side of the steering wheel to scroll to the Tire
Pressure screen under the DIC info page.
5. Press and hold the thumbwheel in the center of the DIC controls.
A message requesting acceptance of the
process may display.
The horn sounds twice to signal the
receiver is in relearn mode and the TIRE
LEARNING ACTIVE message displays on
the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve stem. Then press
the button to activate the TPMS sensor.
A horn chirp confirms that the sensor
identification code has been matched to
this tire and wheel position.
8. Proceed to the passenger side front tire, and repeat the procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the procedure in Step 7.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
Vehicle Care 247
If the vehicle tires must be replaced
with a tire that does not have a TPC
Spec number, make sure they are the
same size, load range, speed rating, and
construction (radial) as the original
tires.
The Tire and Loading Information label
indicates the original equipment tires
on the vehicle. SeeVehicle Load Limits
0 158.
Different Size Tires and Wheels
If wheels or tires are installed that are a
different size than the original equipment
wheels and tires, vehicle performance,
including its braking, ride and handling
characteristics, stability, and resistance to
rollover may be affected. If the vehicle has
electronic systems such as antilock brakes,
rollover airbags, traction control, electronic
stability control, or All-Wheel Drive, the
performance of these systems can also be
affected.
{Warning
If different sized wheels are used, there
may not be an acceptable level of
performance and safety if tires not
recommended for those wheels are
selected. This increases the chance of a
crash and serious injury. Only use GM
specific wheel and tire systems developed
for the vehicle, and have them properly
installed by a GM certified technician.
See Buying New Tires 0246 and
Accessories and Modifications 0213.
Uniform Tire Quality Grading
The following information relates to the
system developed by the United States
National Highway Traffic Safety
Administration (NHTSA), which grades
tires by treadwear, traction, and
temperature performance. This applies
only to vehicles sold in the United
States. The grades are molded on the
sidewalls of most passenger car tires.
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 controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
Vehicle Care 257
Remove the bracket and open the trim cover
to expose the terminal.
Discharged Battery Negative (–) GroundingPoint
The discharged battery negative (–)
grounding point is a stud on a bracket
located near the Accessory Power
Module (APM).
The good battery positive (+) terminal and
the good battery negative (–) terminal are
on the battery of the vehicle providing the
jump start. 1. Check the other vehicle. It must have a 12-volt battery with a negative ground
system.
Caution
If the other vehicle does not have a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
a vehicle that has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake and shift into P (Park). See Shifting Into Park 0163.
Caution
If any accessories are left on or plugged
in during the jump starting procedure,
they could be damaged. The repairs
would not be covered by the vehicle
warranty. Whenever possible, turn off or
unplug all accessories on either vehicle
when jump starting.
4. Turn the vehicle off. Turn off all lights and accessories in both vehicles, except
the hazard warning flashers if needed.
{Warning
An electric fan can start up even when
the propulsion system is not operating
and can injure you. Keep hands, clothing
and tools away from any underhood
electric fan.
{Warning
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been
blinded. Use a flashlight if you need
more light.
Battery fluid contains acid that can burn
you. Do not get it on you. If you
accidentally get it in your eyes or on
your skin, flush the place with water and
get medical help immediately.
{Warning
Fans or other moving propulsion system
parts can injure you badly. Keep your
hands away from moving parts once the
propulsion system is operating.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
272 Service and Maintenance
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle Inspection (MPVI)
completed by a GM dealer technician is a
maintenance assessment of your vehicle.
The benefit of the MPVI is to identify and
inform the customer of service items that
require immediate attention and those that
may require attention in the future.
The technician will perform the following
checks on your vehicle. For a complete list
of checks, inspections, and services, see your
dealer.
Some items may not apply to your vehicle
and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and connections
Systems, Fluids, and Visible Leak
Inspection
.Electric Drive Unit
.Drive axle
.Transfer case
.Power electronics cooling system
.Windshield washer fluid
Tire Inspection
.Tire pressure, tread depth, and wear
.Rotation, if applicable
.Alignment check, optional
.Reset tire pressure monitor
.Check tire sealant expiration date,
if equipped
.Check spare tire, if equipped
Brakes
.Check brake system
Visible and Functional Inspections
.Seat belt components
.Accelerator pedal
.Passenger compartment air filter,
if equipped
.Hoses
.Shocks and struts
.Steering components
.Axle boots or driveshaft and u-joints
.Compartment lift struts, if equipped
.Floor mats secured, no interference with
pedals
.Horn
.Starter switch
Lubricate
.Chassis components
Owner Checks and Services
.At least twice a year, have underbody
flushing service performed. See
"Underbody Maintenance" in Exterior Care
0 262.

Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada-
16404388) - 2023 - CRC - 3/7/22
Index 297
IndexA
Accessories and Modifications . . . . . . . . . . . . 213
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 163
AdaptiveCruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 174
Add-On Electrical Equipment . . . . . . . . . . . . . . 211
Additional OnStar Information . . . . . . . . . . . . . . . . . . . . 290
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 29
Agreements Trademarks and License . . . . . . . . . . . . . . . 138
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Conditioning Regular Operation . . . . . . . . 149
Filter, Passenger Compartment . . . . . . . . 148
Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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 . . . . . . . . . . . . . . . . . . . . . . . . . 83
Replacing System Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Servicing Airbag-Equipped Vehicles . . . . . . 47
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 19
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Rear Cross Traffic . . . . . . . . . . . . . . . . . . . . . . 188
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 193
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 235
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Antilock Brake System (ABS) . . . . . . . . . . . . . 168 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Apple CarPlay and Android Auto . . . . . . . . . 130
Armrest Rear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Assistance Program, Roadside . . . . . . . . . . . . .281
Assistance Systems Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188