2018 CHEVROLET VOLT service

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
In Brief 29
The weight of excess cargo in the
vehicle affects efficiency and range.
Avoid carrying more than is needed.
If fuel is not regularly used, consider
keeping the fuel tank only one-third
full. Excess fuel weight impacts
efficiency and range.
For fuel recommendations, seeFuel
0 228.
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.
Roadside Assistance
Program
U.S.: 1-888-811-1926
TTY Users (U.S. Only):
1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new Chevrolet,
you are automatically enrolled in the
Roadside Assistance program. This program provides security and
convenience in the event of an
on-road failure or emergency
situation. Service is provided
24 hours a day, 365 days a year for
the duration of the vehicle’s
powertrain warranty.
See
Roadside Assistance Program
0 345.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Keys, Doors, and Windows 31
There is a key inside the Remote
Keyless Entry (RKE) transmitter that
can be used for all locks.
To remove the key, press the button
near the bottom of the RKE
transmitter, and pull the key out.
Never pull the key out without
pressing the button.
The key has a bar-coded key tag
that the dealer or qualified locksmith
can use to make new keys. Store
this information in a safe place, not
in the vehicle.
See your dealer if a replacement
key or an additional key is needed.
If it becomes difficult to turn the key
in a vehicle lock, inspect the key
blade for debris. Periodically clean
with a brush or pick.
If locked out of the vehicle, call
Roadside Assistance. SeeRoadside
Assistance Program 0345.
With an active OnStar service plan,
an OnStar Advisor may remotely
unlock the vehicle. See OnStar
Overview 0355.Remote Keyless Entry
(RKE) System
See Radio Frequency Statement
0 351.
If there is a decrease in the Remote
Keyless Entry (RKE) operating
range:
. Check the distance. The
transmitter may be too far from
the vehicle.
. Check the location. Other
vehicles or objects may be
blocking the signal.
. Check the transmitter's battery.
See “Battery Replacement” later
in this section.
. If the transmitter is still not
working correctly, see your
dealer or a qualified technician
for service.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Keys, Doors, and Windows 47
How to Detect a Tamper
Condition
IfKis pressed on the transmitter
and the horn chirps and the lights
flash three times, a previous alarm
occurred while the system was
armed.
If the alarm has been activated, a
message will appear on the Driver
Information Center (DIC).
Immobilizer
See Radio Frequency Statement
0 351.
Immobilizer Operation
This vehicle has a passive
theft-deterrent system. The system
does not have to be manually
armed or disarmed.
The vehicle is automatically
immobilized when the vehicle is
turned off.
The system is automatically
disarmed when the vehicle is
started with a valid RKE transmitter in the vehicle. The RKE transmitter
uses electronic coding that matches
an immobilizer control unit in the
vehicle and automatically disarms
the system. Only a correct
transmitter can be used to turn the
vehicle on.
The security light comes on if there
is a problem with arming or
disarming the theft-deterrent
system.
This light may come on briefly when
the vehicle is turned on. There is a
problem if the engine does not start
and this light stays on.
Turn the ignition off and try again.
If the engine still does not start, and
the RKE transmitter appears
undamaged, try the other RKE
transmitter for the vehicle, or place
the RKE transmitter in thetransmitter pocket. See
Remote
Keyless Entry (RKE) System
Operation 032. It may be necessary
to check the fuse. See Electrical
System Overload 0261. If the
vehicle does start, the first
transmitter is bad. If the vehicle still
does not start, the vehicle needs
service. See your dealer.
Do not leave the key or device that
disarms or deactivates the vehicle
theft-deterrent system in the vehicle.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Seats and Restraints 71
Warning (Continued)
moderate crash, there may be
concealed damage that could
make it difficult to safely operate
the vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
If an airbag inflates or the vehicle
has been in a crash, the sensing
system may shut down the high
voltage system. When this occurs,
the high voltage battery is
disconnected and the vehicle will
not start. Before the vehicle can be
operated again, it must be serviced
at your dealer.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag. .
Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for the vehicle covers the need
to replace other parts.
. The vehicle has a crash sensing
and diagnostic module which
records information after a
crash.
See Vehicle Data Recording and
Privacy 0353 andEvent Data
Recorders 0353.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the front
outboard passenger position. The
passenger airbag status indicator
will light on the overhead console
when the vehicle is started.
The words ON and OFF will be
visible during the system check.
When the system check is
complete, either the word ON or
OFF will be visible. See Passenger
Airbag Status Indicator 0113.
The passenger sensing system
turns off the front outboard
passenger frontal airbag and knee
airbag, under certain conditions. No
other airbag is affected by the
passenger sensing system.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Seats and Restraints 73
When the passenger sensing
system has turned off the front
outboard passenger frontal airbag
and knee airbag, the off indicator
will light and stay lit to remind you
that the airbags are off. See
Passenger Airbag Status Indicator
0113.
The passenger sensing system is
designed to turn on the front
outboard passenger frontal airbag
and knee airbag anytime the system
senses that a person of adult size is
sitting properly in the front outboard
passenger seat.
When the passenger sensing
system has allowed the airbags to
be enabled, the on indicator will light
and stay lit as a reminder that the
airbags are active.
For some children, including
children in child restraints, and for
very small adults, the passenger
sensing system may or may not turn
off the front outboard passenger
frontal airbag and knee airbag,
depending upon the person’s
seating posture and body build.
Everyone in the vehicle who has outgrown child restraints should
wear a seat belt properly
—whether
or not there is an airbag for that
person.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. See Airbag Readiness
Light 0113 for more information,
including important safety
information.
If the On Indicator Is Lit for a
Child Restraint
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag
and knee airbag if the system
determines that an infant is present in a child restraint. If a child restraint
has been installed and the on
indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions
provided by the child restraint
manufacturer and refer to
Securing Child Restraints (With
the Seat Belt in the Front Seat)
092 orSecuring Child
Restraints (With the Seat Belt
in the Rear Seat) 090.
5. If, after reinstalling the child restraint and restarting the
vehicle, the on indicator is still
lit, turn the vehicle off. Then
slightly recline the vehicle
seatback and adjust the seat
cushion, if adjustable, to make

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
76 Seats and Restraints
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle
should be serviced. There are parts
of the airbag system in several
places around the vehicle. Your
dealer and the service manual have
information about servicing the
vehicle and the airbag system. To
purchase a service manual, see
Service Publications Ordering
Information0351.
{Warning
For up to 10 seconds after the
vehicle is turned off and the 12‐
volt battery is disconnected, an
airbag can still inflate during
improper service. You can be
injured if you are close to an
airbag when it inflates. Avoid
yellow connectors. They are
probably part of the airbag
system. Be sure to follow proper
service procedures, and make
sure the person performing work
for you is qualified to do so.
Adding Equipment to the
Airbag-Equipped Vehicle
Adding accessories that change the
vehicle's frame, bumper system,
height, front end, or side sheet
metal may keep the airbag system
from working properly. The
operation of the airbag system can
also be affected by changing any
parts of the front seats, seat belts,
airbag sensing and diagnostic
module, steering wheel, instrument
panel, inner door seals including the
speakers, any of the airbag
modules, ceiling or pillar garnish
trim, overhead console, front
sensors, side impact sensors,
or airbag wiring.
Your dealer and the service manual
have information about the location
of the airbag sensors, sensing and
diagnostic module, and airbag
wiring.
In addition, the vehicle has a
passenger sensing system for the
front outboard passenger position,
which includes sensors that are part
of the passenger seat. The passenger sensing system may not
operate properly if the original seat
trim is replaced with non-GM
covers, upholstery, or trim; or with
GM covers, upholstery, or trim
designed for a different vehicle. Any
object, such as an aftermarket seat
heater or a comfort-enhancing pad
or device, installed under or on top
of the seat fabric, could also
interfere with the operation of the
passenger sensing system. This
could either prevent proper
deployment of the passenger
airbag(s) or prevent the passenger
sensing system from properly
turning off the passenger airbag(s).
See
Passenger Sensing System
0 71.
If the vehicle has rollover roof-rail
airbags, see Different Size Tires
and Wheels 0287 for additional
important information.
If you have to modify your vehicle
because you have a disability and
have questions about whether the
modifications will affect the vehicle's
airbag system, or if you have
questions about whether the airbag

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Seats and Restraints 77
system will be affected if the vehicle
is modified for any other reason, call
Customer Assistance. See
Customer Assistance Offices0343.
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light 0113.
Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, see Where Are the
Airbags? 066. See your dealer
for service.
Replacing Airbag System
Parts after a Crash
{Warning
A crash can damage the airbag
systems in the vehicle.
A damaged airbag system may
not properly protect you and your
passenger(s) in a crash, resulting
in serious injury or even death. To
help make sure the airbag
systems are working properly
after a crash, have them
inspected and any necessary
replacements made as soon as
possible.
If an airbag inflates, you will need to
replace airbag system parts. See
your dealer for service.
If the airbag readiness light stays on
after the vehicle is started or comes
on when you are driving, the airbag
system may not work properly. Have
the vehicle serviced right away. See
Airbag Readiness Light 0113.
Child Restraints
Older Children
Older children who have outgrown
booster seats should wear the
vehicle’s seat belts.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Instruments and Controls 99
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 100
Steering Wheel Controls . . . . . . 100
Heated Steering Wheel . . . . . . . 100
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Pedestrian Safety Signal . . . . . 100
Windshield Wiper/Washer . . . . 101
Compass . . . . . . . . . . . . . . . . . . . . . 102
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 102
Power Outlets . . . . . . . . . . . . . . . . 103
Wireless Charging . . . . . . . . . . . . 103
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . 106
Instrument Cluster . . . . . . . . . . . . 106
Speedometer . . . . . . . . . . . . . . . . . 110
Odometer . . . . . . . . . . . . . . . . . . . . . 110
Trip Odometer . . . . . . . . . . . . . . . . 110
Battery Gauge (High Voltage) . . . . . . . . . . . . . . . . . . . . . 110
Fuel Gauge . . . . . . . . . . . . . . . . . . . 110
Driver Efficiency Gauge . . . . . . . 111
Power Indicator Gauge . . . . . . . 112 Seat Belt Reminders . . . . . . . . . . 112
Airbag Readiness Light . . . . . . . 113
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . 113
Charging System Light (12-Volt
Battery) . . . . . . . . . . . . . . . . . . . . . 114
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 114
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 116
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 117
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 117
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 117
Sport Mode Light . . . . . . . . . . . . . 118
Mountain Mode Light . . . . . . . . . 118
Hold Mode Light . . . . . . . . . . . . . . 118
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 118
Vehicle Ahead Indicator . . . . . . . 119
Traction Off Light . . . . . . . . . . . . . 119
StabiliTrak OFF Light . . . . . . . . . 119
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . 119
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 120
Tire Pressure Light . . . . . . . . . . . 120
Engine Oil Pressure Light . . . . 120 Low Fuel Warning Light . . . . . . 121
Security Light . . . . . . . . . . . . . . . . . 121
Vehicle Ready Light . . . . . . . . . . 121
High-Beam On Light . . . . . . . . . . 122
Lamps On Reminder . . . . . . . . . 122
Cruise Control Light . . . . . . . . . . 122
Door Ajar Light . . . . . . . . . . . . . . . 122
Information Displays
Power Flows . . . . . . . . . . . . . . . . . 123
Programmable Charging . . . . . . 123
Energy Information . . . . . . . . . . . 132
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 133
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 136
Propulsion PowerMessages . . . . . . . . . . . . . . . . . . . 136
Vehicle Speed Messages . . . . . 137
Vehicle Personalization
Vehicle Personalization . . . . . . . 137