
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
320 Vehicle Care
weatherstrips with a clean cloth will
make them last longer, seal better,
and not stick or squeak.
Underbody Maintenance
At least twice a year, spring and fall,
use plain water to flush dirt and
debris from the vehicle's underbody.
Your dealer or an underbody car
washing system can do this. If not
removed, rust and corrosion can
develop.
Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and
contaminate the fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and
should be replaced.
Sheet Metal Damage
If the vehicle is damaged and
requires sheet metal repair or
replacement, make sure the body
repair shop applies anti-corrosion
material to parts repaired or
replaced to restore corrosion
protection.Original manufacturer replacement
parts will provide the corrosion
protection while maintaining the
vehicle warranty.
Finish Damage
Quickly repair minor chips and
scratches with touch-up materials
available from your dealer to avoid
corrosion. Larger areas of finish
damage can be corrected in your
dealer's body and paint shop.
Chemical Paint Spotting
Airborne pollutants can fall upon
and attack painted vehicle surfaces
causing blotchy, ring-shaped
discolorations, and small, irregular
dark spots etched into the paint
surface. Refer to
“Finish Care”
previously in this section.
Interior Care
To prevent dirt particle abrasions,
regularly clean the vehicle's interior.
Immediately remove any soils.
Newspapers or dark garments can
transfer color to the vehicle’s
interior. Use a soft bristle brush to remove
dust from knobs and crevices on the
instrument cluster. Using a mild
soap solution, immediately remove
hand lotions, sunscreen, and insect
repellent from all interior surfaces or
permanent damage may result.
Use cleaners specifically designed
for the surfaces being cleaned to
prevent permanent damage. Apply
all cleaners directly to the cleaning
cloth. Do not spray cleaners on any
switches or controls. Remove
cleaners quickly.
Before using cleaners, read and
follow all safety instructions on the
label. While cleaning the interior,
open the doors and windows to get
proper ventilation.
To prevent damage, do not clean
the interior using the following
cleaners or techniques:
.
Never use a razor or any other
sharp object to remove soil from
any interior surface.
. Never use a brush with stiff
bristles.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Service and Maintenance 327
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0240.
Once a Month
. Check the tire inflation
pressures. See Tire Pressure
0 279.
. Inspect the tires for wear. See
Tire Inspection 0284.
. Check the windshield washer
fluid level. See Washer Fluid
0 250.
. Engine, power electronics, and
high voltage battery pack
coolant level checks.
See Cooling System (Engine)
0 245 orCooling System (High
Voltage Battery) 0248 or
Cooling System (Power
Electronics and Charger
Modules) 0249.
Engine Oil Change
Every 24 months or when the
CHANGE ENGINE OIL SOON
message displays, change the
engine oil and filter as soon as
possible, within the next 1 000 km/
600 mi. The engine oil and filter
must be changed at least once
every 24 months. After each oil and
filter change, the oil life system must
be reset. See Engine Oil Life
System 0242. More frequent
changes may be required when the
vehicle is exposed to a corrosive
environment, such as areas of high
humidity, along an ocean coast,
and/or areas that apply road salt
during winter.
Your trained dealer technician can
perform this work. If the engine oil
life system is reset accidentally,
service the vehicle within 5 000 km/
3,000 mi since the last service.
Reset the oil life system when the
oil is changed.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0284.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system.
See Engine Oil 0240 and
Engine Oil Life System 0242.
. Check engine coolant level.
See Cooling System (Engine)
0 245 orCooling System (High
Voltage Battery) 0248 or
Cooling System (Power
Electronics and Charger
Modules) 0249.
. Check windshield washer fluid
level. See Washer Fluid 0250.
. Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0315. Replace worn or

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
370 Index
E
Electric Drive Unit . . . . . . . . . . . . . . 183
Electric Drive Unit Shift LockControl Function Check . . . . . . . 255
Electric Mode . . . . . . . . . . . . . . . . . . . 176
Electric Parking Brake . . . . . . . . . . 185
Electric Parking Brake Light . . . . 117
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 232
Electrical Requirements for
Battery Charging . . . . . . . . . . . . . . 227
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 262
Fuses and Circuit Breakers . . . 262
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 266
Overload . . . . . . . . . . . . . . . . . . . . . 261
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 269
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 356
Energy Efficiency Driving . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Energy Information . . . . . . . . . . . . . 132
Engine Air Cleaner/Filter . . . . . . . . . . . . . 243 Engine (cont'd)
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . .114
Compartment Overview . . . . . . . 239
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 120
Cooling System . . . . . 245, 248, 249
Drive Belt Routing . . . . . . . . . . . . 340
Exhaust . . . . . . . . . . . . . . . . . . . . . . 182
Oil Life System . . . . . . . . . . . . . . . 242
Oil Pressure Light . . . . . . . . . . . . 120
Overheating . . . . . . . . . . . . . . . . . . 250
Running While Parked . . . . . . . . 183
Engine Unavailable
Out of Fuel . . . . . . . . . . . . . . . . . . . 180
Entry Lighting . . . . . . . . . . . . . . . . . . . 151
Event Data Recorders . . . . . . . . . . 353
Exit Lighting . . . . . . . . . . . . . . . . . . . . 151
Extended Parking . . . . . . . . . . . . . . . 176
Extended Range Mode . . . . . . . . . 177
Extender, Seat Belt . . . . . . . . . . . . . . 63
Exterior Lamp Controls . . . . . . . . . 145
F
Filter, Engine Air Cleaner . . . . . . . . . . . 243
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 147
Flashers, Hazard Warning . . . . . . 148 Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 291
Changing . . . . . . . . . . . . . . . . . . . . . 299
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 323
Fluid Brakes . . . . . . . . . . . . . . . . . . . . . . . . 252
Washer . . . . . . . . . . . . . . . . . . . . . . . 250
Folding Mirrors . . . . . . . . . . . . . . . . . . 48
Forward Automatic Braking . . . . . 207
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 205
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 351
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 54
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 56
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Additives . . . . . . . . . . . . . . . . . . . . . 229
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 231
Filling the Tank . . . . . . . . . . . . . . . 229
Foreign Countries . . . . . . . . . . . . 229
Gauge . . . . . . . . . . . . . . . . . . . . . . . . .110
Low Fuel Warning Light . . . . . . . 121
Requirements, California . . . . . 229
Function Check
Electric Drive Unit ShiftLock Control . . . . . . . . . . . . . . . . 255

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
372 Index
L
Labeling, Tire Sidewall . . . . . . . . . . 273
LampsDaytime Running (DRL) . . . . . . 147
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 150
Exterior Controls . . . . . . . . . . . . . . 145
License Plate . . . . . . . . . . . . . . . . . 260
Malfunction Indicator(Check Engine) . . . . . . . . . . . . . .114
On Reminder . . . . . . . . . . . . . . . . . 122
Reading . . . . . . . . . . . . . . . . . . . . . . 150
Taillamps . . . . . . . . . . . . . . . . . . . . . 259
Lane Change Alert (LCA) . . . . . . . 209
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 211
Lane Keep Assist (LKA) . . . . . . . . 211
Lane Keep Assist Light . . . . . . . . . 118
Lap-Shoulder Belt . . . . . . . . . . . . . . . 61
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 90
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 84
LED Lighting . . . . . . . . . . . . . . . . . . . . 258
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 151
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Illumination Control . . . . . . . . . . . 149 Lighting (cont'd)
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Lights Airbag Readiness . . . . . . . . . . . . . .113
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . .117
Brake System Warning . . . . . . . .116
Charging System . . . . . . . . . . . . . .114
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . .114
Cruise Control . . . . . . . . . . . . . . . . 122
Door Ajar . . . . . . . . . . . . . . . . . . . . . 122
Electric Parking Brake . . . . . . . . .117
Engine Coolant Temperature Warning . . . . . . . 120
Engine Oil Pressure . . . . . . . . . . 120
Flash-to-Pass . . . . . . . . . . . . . . . . . 147
High-Beam On . . . . . . . . . . . . . . . . 122
High/Low Beam Changer . . . . . 147
Hold Mode . . . . . . . . . . . . . . . . . . . . .118
Lane Keep Assist . . . . . . . . . . . . . .118
Low Fuel Warning . . . . . . . . . . . . 121
Mountain Mode . . . . . . . . . . . . . . . .118
Seat Belt Reminders . . . . . . . . . . .112
Security . . . . . . . . . . . . . . . . . . . . . . 121
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . .117
Sport Mode . . . . . . . . . . . . . . . . . . . .118 Lights (cont'd)
StabiliTrak OFF . . . . . . . . . . . . . . . .119
Tire Pressure . . . . . . . . . . . . . . . . . 120
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . .119
Traction Off . . . . . . . . . . . . . . . . . . . .119
Vehicle Ready . . . . . . . . . . . . . . . . 121
Locks Automatic Door . . . . . . . . . . . . . . . . . 43
Delayed Locking . . . . . . . . . . . . . . . . 42
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Lockout Protection . . . . . . . . . . . . . . 43
Power Door . . . . . . . . . . . . . . . . . . . . . 42
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Loss of Control . . . . . . . . . . . . . . . . . 164
Low Fuel Warning Light . . . . . . . . . 121
Low-Profile Tires . . . . . . . . . . . . . . . . 273
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 84
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 337
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 332
Maintenance Modes . . . . . . . . . . . . 180
Maintenance Schedule . . . . . . . . . 327