2018 CHEVROLET VOLT heating

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
120 Instruments and Controls
DIC messages to determine which
feature(s) is no longer functioning
and whether the vehicle requires
service.
If the light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working.
SeeTraction Control/Electronic
Stability Control 0189.
Engine Coolant
Temperature Warning
Light
The engine coolant temperature
warning light comes on briefly when
the vehicle is started.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally, the
indicator light then goes off. If the light comes on and stays on
while driving, the vehicle may have
a problem with the cooling system.
Stop and turn off the vehicle to
avoid damage to the engine.
A warning chime sounds when this
light is on.
See
Engine Overheating 0250 for
more information.
Tire Pressure Light
If equipped with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the vehicle is
started. It provides information
about tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated. A message in the Driver Information
Center (DIC) may also display. Stop
as soon as possible, and inflate the
tires to the pressure value shown on
the Tire and Loading Information
label. See
Tires0271.
When the Light Flashes First and
Then Is On Steady
This indicates that there may be a
problem with the TPMS. The light
flashes for about one minute and
stays on steady until the vehicle is
off. This sequence repeats each
time the vehicle is started. See Tire
Pressure Monitor System 0280.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
(Continued)

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Instruments and Controls 133
Energy Usage Score
The Energy Usage Score screen
provides an estimate of the factors
that influence energy usage since
the last full charge of the high
voltage battery. A positive score is
desired to reach the vehicle’s
electric and fuel economy rating.
.Technique includes accelerating
and braking.
. Terrain includes road conditions,
such as hills, rain, and snow and
may be affected by wind and tire
pressure.
. Climate Settings includes how
the heating and air conditioning
are used. .
Outside Temperature includes
the effect that hot or cold air has
on vehicle aerodynamics.
. Score is the sum of the
individual scores.
The individual scores provide an
understanding of how electric and
fuel economy are different from
day-to-day, even when traveling the
same route.
All values are reset after a complete
charge and may not be stable until
approximately 16 km (10 mi) have
been driven.
Energy Details
The Energy Details screen displays
how energy is being used since the
last time the high voltage battery was fully charged. It includes
Driving and Accessories, Climate
Settings, and Battery Conditioning.
The circle graph displays
these percentages. The total energy
used displays at the bottom of the
screen.
Driver Information
Center (DIC)
The DIC is displayed in the
instrument cluster. It shows the
status of many vehicle systems.
worx:
Press to go to the
previous or next selection.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Instruments and Controls 139
.Collision/Detection Systems
. Comfort and Convenience
. Energy
. Lighting
. Power Door Locks
. Remote Lock, Unlock, Start
Climate and Air Quality
Select and the following may
display:
.Auto Fan Speed
. Auto Heated Seats
. Auto Defog
. Engine Assist Heat
. Engine Assist Heat Plugged In
Auto Fan Speed
This feature will set the maximum
auto fan speed.
Select Low, Medium, or High.
Auto Heated Seats
When the vehicle is on, this feature
will automatically activate the
heated seats at the level required by the vehicle's interior temperature.
The auto heated seats can be
turned off by using
LorMon the
center stack.
If equipped with Auto Heated
Steering Wheel, this feature will turn
on when the Auto Heated Seats
turn on.
Select Off or On.
Auto Defog
When set to On, the front defog will
automatically come on when the
vehicle is started.
Select Off or On.
Engine Assist Heat
If equipped, this feature selects the
outside temperature level at which
the engine may run to assist heating
in Electric Mode. A change in
selection will not take effect until
after the vehicle is first
powered down.
Select On for temperatures below
approximately 0 °C (32 °F), or select
Deferred for temperatures below
approximately −10 °C (15 °F). Engine Assist Heat Plugged In
During remote start, this feature
turns on or off the ability for the
engine to run to help heat the
vehicle when it is plugged in.
A change in setting will not take
effect until after the vehicle is first
powered down.
Select Off or On.
Collision/Detection Systems
Select and the following may
display:
.
Forward Collision System
. Rear Cross Traffic Alert
. Adaptive Cruise Go Notifier
. Lane Change Alert
Forward Collision System
This feature will turn on or off the
Forward Collision Alert (FCA) and
Forward Automatic Braking (FAB).
The Off setting disables all FCA and
FAB functions. With the Alert and
Brake setting, both FCA and FAB

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Climate Controls 153
Climate Controls
Climate Control Systems
Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 153
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 158
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 159
Climate Control
Systems
Automatic Climate
Control System
The heating, cooling, and ventilation
for the vehicle can be controlled
with this system.
The vehicle may require the use of
an auxiliary heat source under
certain cold conditions. This
provides additional heating and
defrost capability obtained by
running the engine, even if the high
voltage battery is adequately
charged. Under these conditions,
the engine will start and use fuel.
Make sure there is fuel in the tank. Do not allow the vehicle to remain in
extreme temperatures for long
periods without being driven or
plugged in.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Climate Controls 157
The defogger only works when the
vehicle is on. The defogger will turn
off if the vehicle is turned off.
If equipped with heated outside
rearview mirrors, they turn on when
the rear window defogger button is
on and help to clear fog or frost from
the surface of the mirror. See
Heated Mirrors048.
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything
else that is sharp. This may
damage the rear window
defogger grid and affect the
radio's ability to pick up stations
clearly. The repairs would not be
covered by the vehicle warranty.
Remote Start : The climate control
system may be started by using the
Remote Keyless Entry (RKE)
transmitter. The climate control system will default to an appropriate
heating or cooling mode. See
Remote Start
038.
If equipped, the heated seats will
turn on if it is cold outside. The
heated seat indicator light may not
come on during a remote start.
If equipped, the heated steering
wheel will come on if it is cold
outside. The heated steering wheel
indicator light may not come on
during a remote start.
The rear window defogger turns on
if it is cold outside.
Compressor
The vehicle has an electric powered
air conditioning compressor. This
allows for continuous air
conditioning and/or high voltage
battery cooling operation, without
running the engine.
The compressor operating speed is
not tied to the engine speed, so
some noise may be heard from the
compressor, especially when air
conditioning use is high and the
engine has turned off. This is
normal.
Sensors
Solar Sensor
The solar sensor is on top of the
instrument panel, near the
windshield, where it monitors solar
intensity.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly.
Humidity Sensor
The humidity sensor is near the
base of the inside rearview mirror.
The climate control system uses the
sensor information to adjust the
temperature and recirculation for
best comfort.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
234 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 235
California Proposition65 Warning . . . . . . . . . . . . . . . . . 235
California Perchlorate Materials Requirements . . . . . 236
Accessories and Modifications . . . . . . . . . . . . . . . . 236
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 236
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 237
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 239
Engine Oil . . . . . . . . . . . . . . . . . . . . 240
Engine Oil Life System . . . . . . . 242
Engine Air Cleaner/Filter . . . . . . 243
Cooling System (Engine) . . . . . 245
Cooling System (High Voltage Battery) . . . . . . . . . . . . . . . . . . . . . 248
Cooling System (Power Electronics and Charger
Modules) . . . . . . . . . . . . . . . . . . . . 249
Engine Overheating . . . . . . . . . . 250
Washer Fluid . . . . . . . . . . . . . . . . . 250
Brakes . . . . . . . . . . . . . . . . . . . . . . . 251 Brake Fluid . . . . . . . . . . . . . . . . . . . 252
Battery - North America . . . . . . 253
Electric Drive Unit Shift Lock
Control Function Check . . . . . 255
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 256
Wiper Blade Replacement . . . . 256
Gas Strut(s) . . . . . . . . . . . . . . . . . . 257
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 258
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 258
Halogen Bulbs . . . . . . . . . . . . . . . . 258
LED Lighting . . . . . . . . . . . . . . . . . 258
Headlamps . . . . . . . . . . . . . . . . . . . 258
Taillamps . . . . . . . . . . . . . . . . . . . . . 259
License Plate Lamp . . . . . . . . . . 260
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 261
Electrical System Overload . . . 261
Fuses and Circuit Breakers . . . 262
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 262
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 266
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 269
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 271
All-Season Tires . . . . . . . . . . . . . . 272
Winter Tires . . . . . . . . . . . . . . . . . . 272
Low-Profile Tires . . . . . . . . . . . . . 273
Tire Sidewall Labeling . . . . . . . . 273
Tire Designations . . . . . . . . . . . . . 275
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 276
Tire Pressure . . . . . . . . . . . . . . . . . 279
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 280
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 281
Tire Inspection . . . . . . . . . . . . . . . . 284
Tire Rotation . . . . . . . . . . . . . . . . . 284
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 285
Buying New Tires . . . . . . . . . . . . . 286
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 287
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 288
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 289
Wheel Replacement . . . . . . . . . . 289
Tire Chains . . . . . . . . . . . . . . . . . . . 291
If a Tire Goes Flat . . . . . . . . . . . . 291
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 292

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Vehicle Care 245
Cooling System (Engine)
1. Engine Cooling Fans (Outof View)
2. Engine Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan. If the coolant inside the coolant
surge tank is boiling, do not do
anything else until it cools down.
The vehicle should be parked on a
level surface.
The coolant level should be up to
the cold fill line. If it is not, there
might be a leak at the radiator
hoses, heater hoses, radiator, water
pump, or somewhere else in the
cooling system.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
If there seems to be no leak, with
the engine on, check to see if the
cooling fans are running. If the
engine is overheating, the fans should be running. If they are not,
the vehicle needs service. Turn off
the vehicle.
Engine Coolant
The engine cooling system in the
vehicle is filled with GM Premix
DEX-COOL engine coolant. See
Recommended Fluids and
Lubricants
0335. The coolant
requires changing at certain
intervals. See Maintenance
Schedule 0327.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0250.
What to Use
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
(Continued)

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
246 Vehicle Care
Warning (Continued)
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
Use GM Premix DEX-COOL engine
coolant. This mixture:
. Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.
. Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
pre-mix of DEX-COOL coolant
that meets GM Standard
GMW3420 and deionized water.
Anything else can cause damage
to the hybrid cooling system
components and the vehicle,
which would not be covered by
the vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level. Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible
but the coolant level is not at or
above the cold fill line, add GM
Premix DEX-COOL engine coolant.
Be sure the cooling system is cool
before this is done. See
Engine
Overheating 0250.
The coolant surge tank is on the
driver side of the engine
compartment. See Engine
Compartment Overview 0239.