heating CHEVROLET VOLT 2018 User Guide

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.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
250 Vehicle Care
1. High Voltage BatteryCoolant Reservoir
2. Power Electronics Coolant Reservoir
Check to see if coolant is visible in
the power electronics coolant
reservoir (2). If coolant is visible but
the coolant level is below the cold
fill line on the side of the reservoir,
there could be a leak in the cooling
system.
The power electronics cooling
system supports the operation of
sensitive electronics. The power electronics cooling
system should only be serviced by a
qualified technician.
Engine Overheating
The vehicle has an indicator to warn
of engine overheating.
If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance Program
0
345.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, the fans
should be running. If they are not,
do not continue to run the vehicle,
and have the vehicle serviced.
Caution
Do not run the engine when there
is a leak in the hybrid cooling
system. This can cause a loss of
all coolant and can damage the
system and the vehicle. Have any
leaks fixed right away.
Washer Fluid
What to Use
When adding windshield washer
fluid to the vehicle, be sure to read
the manufacturer's instructions
before use. If operating the vehicle
in an area where the temperature
may fall below freezing, use a fluid
that has sufficient protection against
freezing.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
268 Vehicle Care
A fuse puller is in the engine
compartment fuse block.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 –
F2 –
F3 –
F4 Heating, ventilation, and air conditioning
blower
F5 Body control module 2
F6 –
F7 CGM
F8 Body control module 3
F9 Fuel power pump module
F10 –
F11 –
F12 – Fuses Usage
F13 –
F14 –
F15 –
F16 –
F17 Data link connector
F18 Body control module 7
F19 Cluster
F20 Body control module 1
F21 Body control module 4
F22 Body control module 6
F23 OnStar
F24 Airbag
F25 Display
F26 Infotainment Video bypass module
F27 –
F28 – Fuses Usage
F29 Overhead console
F30 Radio
F31 Steering wheel controls
F32 Body control module 8
F33 Heating, ventilation, and air conditioning/
Integrated light solar
sensor
F34 Passive entry/ Passive start
F35 Rear closure
F36 Charger
F37 –
F38 –
F39 –
F40 –
F41 –
F42 –

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Vehicle Care 271
A fuse puller is in the engine
compartment fuse block.
The vehicle may not have all of the
fuses, relays, and features shown.Fuses Usage
F1 –
F2 –
F3 –
F4 –
F5 Pedestrian protection
F6 On-board charger module
F7 Front heated seat
F8 Front heated seat
F9 Driver door/Mirror switches
F10 –
F11 Amplifier
F12 Steering wheel switch backlighting
F13 –
F14 – Fuses Usage
F15 –
F16 –
F17 –
F18 –
F19 Obstacle detection
F20 Fuel
F21 Rear heated seat
F22 Right power windows
Relays Usage K1 –
K2 –
K3 –
K4 –
K5 –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 0167.
(Continued)

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Vehicle Care 279
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.Caution
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
(Continued)
Caution (Continued)
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.
The Tire and Loading
Information label on the vehicle
indicates the original equipment
tires and the correct cold tire
inflation pressures. The
recommended pressure is the
minimum air pressure needed to
support the vehicle's maximum
load carrying capacity. See
Vehicle Load Limits 0167.
How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle
with more weight than it was
designed to carry. When to Check
Check the tires once a month or
more. Do not forget the compact
spare, if the vehicle has one.
The cold compact spare tire
pressure should be at 420 kPa
(60 psi). See
Compact Spare
Tire 0305.
How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no