
Black plate (21,1)Chevrolet Volt Owner Manual - 2012
Vehicle Care 10-21
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 on
page 13‑6.
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.
Notice:Engine damage from
running the engine without
coolant is not covered by the
warranty.
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.
Adding Washer Fluid
The WASHER FLUID LOW ADD
FLUID message will appear on the
Driver Information Center (DIC)
when the fluid level is low. See
Driver Information Center (DIC) on
page 5‑45 for more information.
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview on
page 10‑8 for reservoir location.

Black plate (22,1)Chevrolet Volt Owner Manual - 2012
10-22 Vehicle Care
Notice
.When using concentrated
washer fluid, follow the
manufacturer's instructions
for adding water.
.Do not mix water with
ready-to-use washer fluid.
Water can cause the solution
to freeze and damage the
washer fluid tank and other
parts of the washer system.
Also, water does not clean as
well as washer fluid.
.Fill the washer fluid tank only
three-quarters full when it is
very cold. This allows for
fluid expansion if freezing
occurs, which could damage
the tank if it is
completely full.
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system
and paint.
Brakes
This vehicle has disc brakes. Disc
brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying the
brake pedal firmly.
{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.
Notice: Continuing to drive with
worn-out brake pads could result
in costly brake repair. Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. 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 pads for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications in
Capacities and
Specifications on page 12‑2.
Brake linings should always be
replaced as complete axle sets.

Black plate (87,1)Chevrolet Volt Owner Manual - 2012
Vehicle Care 10-87
Cleaning Exterior Lamps/
Lenses and Emblems
Use only lukewarm or cold water, a
soft cloth, and a car washing soap
to clean exterior lamps and lenses.
Follow instructions under "Washing
the Vehicle" earlier in this section.
Windshield and Wiper Blades
Clean the outside of the windshield
with glass cleaner.
Clean rubber blades using lint-free
cloth or paper towel soaked with
windshield washer fluid or a mild
detergent. Wash the windshield
thoroughly when cleaning the
blades. Bugs, road grime, sap, and
a buildup of vehicle wash/wax
treatments may cause wiper
streaking.
Replace the wiper blades if they are
worn or damaged. Damage can be
caused by extreme dusty
conditions, sand, salt, heat, sun,
snow and ice.
Weatherstrips
Apply silicone grease on
weatherstrips to make them last
longer, seal better, and not stick or
squeak. SeeRecommended Fluids
and Lubricants on page 11‑12.
Tires
Use a stiff brush with tire cleaner to
clean the tires.
Notice: Using petroleum-based
tire dressing products on the
vehicle may damage the paint
finish and/or tires. When applying
a tire dressing, always wipe off
any overspray from all painted
surfaces on the vehicle.
Wheels and Trim —Aluminum
or Chrome
Use a soft, clean cloth with mild
soap and water to clean the wheels.
After rinsing thoroughly with clean
water, dry with a soft, clean towel.
A wax may then be applied.
Keep the wheels clean using a soft,
clean cloth with mild soap and
water. Rinse with clean water. After
rinsing thoroughly, dry with a soft,
clean towel. A wax may then be
applied.
Notice: Chrome wheels and other
chrome trim may be damaged if
the vehicle is not washed after
driving on roads that have been
sprayed with magnesium,
calcium, or sodium chloride.
These chlorides are used on
roads for conditions such as ice
and dust. Always wash the
chrome with soap and water after
exposure.

Black plate (3,1)Chevrolet Volt Owner Manual - 2012
Service and Maintenance 11-3
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil on page 10‑9.
Once a Month
.Check the tire inflation
pressures. See Tire Pressure on
page 10‑50.
.Inspect the tires for wear. See
Tire Inspection on page 10‑57.
.Check the windshield washer
fluid level. See Washer Fluid on
page 10‑21.
.Engine, power electronics, and
high voltage battery pack
coolant level checks. See
Cooling System (Engine) on
page 10‑15 orCooling System
(High Voltage Battery) on
page 10‑16 orCooling System
(Power Electronics and Charger
Modules) on page 10‑17 for
more information.
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 on page 10‑12. 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 on page 10‑57.
.Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil on page 10‑9 andEngine Oil
Life System on page 10‑12.
.Check engine coolant level. See
Engine Coolant on page 10‑18.
.Check windshield washer fluid
level. See Washer Fluid on
page 10‑21.

Black plate (9,1)Chevrolet Volt Owner Manual - 2012
Service and Maintenance 11-9
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required. It is recommended that
your dealer perform these
services—their trained dealer
technicians know your vehicle best.
Your dealer can also perform a
thorough assessment with a
multi‐point inspection to recommend
when your vehicle may need
attention. The following list is
intended to explain the services and
conditions to look for that may
indicate services are required. Battery
The battery supplies power to start
the engine and operate any
additional electrical accessories.
.To avoid break‐down or failure to
start the vehicle, maintain a
battery with full cranking power.
.Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion‐free.
Belts
.Belts may need replacing if they
squeak or show signs of
cracking or splitting.
.Trained dealer technicians
can inspect the belts and
recommend replacement when
necessary. Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants on page 11‑12 for GM
approved fluids.
.Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
.Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.

Black plate (12,1)Chevrolet Volt Owner Manual - 2012
11-12 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Engine Oil Use only engine oil licensed to the dexos1 specfication, or equivalent, of
the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is
recommended. See
Engine Oil on page 10‑9.
Engine Cooling System Premix DEX-COOL (GM Part No. 12378390, in Canada 10953456). See
Engine Coolant on page 10‑18.
High Voltage Battery Cooling System Premix DEX-COOL (GM Part No. 12378390, in Canada 10953456). Power Electronics Cooling System Premix DEX-COOL (GM Part No. 12378390, in Canada 10953456).
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 88863461, in
Canada 88863462).
Windshield Washer Optikleen
®Washer Solvent.
Parking Brake Cable Guides Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC‐LB.

Black plate (4,1)Chevrolet Volt Owner Manual - 2012
i-4 INDEX
Electrical SystemEngine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-34
Instrument Panel Fuse Block . . . . . . . . . 10-38, 10-40
Overload . . . . . . . . . . . . . . . . . . . 10-33
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-42
Electronic Stability Control . . . . . 9-38
Emergency, OnStar
®. . . . . . . . . . 14-2
Energy Efficiency
Driving . . . . . . . . . . . . . . . . . . . 1-28, 9-2
Energy Information . . . . . . . . . . . . 5-43
Engine Air Cleaner/Filter . . . . . . . . . . . 10-13
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-19
Compartment Overview . . . . . . . 10-8
Coolant . . . . . . . . . . . . . . . . . . . . . 10-18
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 5-25
Cooling System . . . . . . 10-15–10-17
Cooling System Messages . . . 5-49
Drive Belt Routing . . . . . . . . . . . . 12-3
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-30
Oil Life System . . . . . . . . . . . . . 10-12 Engine (cont'd)
Oil Messages . . . . . . . . . . . . . . . . . 5-50
Overheating . . . . . . . . . . . . . . . . 10-21
Pressure Light . . . . . . . . . . . . . . . . 5-26
Running While Parked . . . . . . . . 9-30
Engine Unavailable Out of Fuel . . . . . . . . . . . . . . . . . . . 9-27
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-6
Event Data Recorders . . . . . . . . 13-16
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-6
Extended Range Mode . . . . . . . . 9-24
Extender, Safety Belt . . . . . . . . . . 3-17
Exterior Lamp Controls . . . . . . . . . 6-1
F
Filter, Engine Air Cleaner . . . . . . . . . 10-13
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-65
Floor Console Storage . . . . . . . . . . 4-1
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-92
Fluid Brakes . . . . . . . . . . . . . . . . . . . . . . 10-23
Washer . . . . . . . . . . . . . . . . . . . . . 10-21
Folding Mirrors . . . . . . . . . . . . . . . . 2-17 Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . 3-4
Heated . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59 Additives . . . . . . . . . . . . . . . . . . . . . 9-60
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-64
Filling the Tank . . . . . . . . . . . . . . . 9-62
Foreign Countries . . . . . . . . . . . . 9-60
Gasoline Specifications . . . . . . . 9-60
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Low Fuel Warning Light . . . . . . . 5-27
Requirements, California . . . . . 9-60
System Messages . . . . . . . . . . . . 5-50
Function Check Electric Drive Unit Shift
Lock Control . . . . . . . . . . . . . . 10-27
Fuses Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-34
Instrument Panel
Fuse Block . . . . . . . . . 10-38, 10-40
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-42

Black plate (7,1)Chevrolet Volt Owner Manual - 2012
INDEX i-7
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-14
Maintenance Modes . . . . . . . . . . . 9-28
Maintenance Schedule Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-12
Malfunction Indicator Lamp . . . . 5-19
Messages Airbag System . . . . . . . . . . . . . . . . 5-53
Anti-theft Alarm System . . . . . . . 5-53
Brake System . . . . . . . . . . . . . . . . 5-48
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-49
Drive Mode . . . . . . . . . . . . . . . . . . . 5-49
Electric Drive Unit . . . . . . . . . . . . 5-49
Engine Cooling System . . . . . . . 5-49
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-50
Fuel System . . . . . . . . . . . . . . . . . . 5-50
Key and Lock . . . . . . . . . . . . . . . . . 5-51
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-51
Object Detection System . . . . . 5-52
Propulsion Power . . . . . . . . . . . . . 5-52
Ride Control System . . . . . . . . . . 5-53
Service Vehicle . . . . . . . . . . . . . . . 5-54
Starting the Vehicle . . . . . . . . . . . 5-54
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55 Messages (cont'd)
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-47
Vehicle Reminder . . . . . . . . . . . . . 5-55
Vehicle Speed . . . . . . . . . . . . . . . . 5-55
Washer Fluid . . . . . . . . . . . . . . . . . 5-55
Mirrors Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . 2-18
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-17
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-17
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-17
Manual Rearview . . . . . . . . . . . . . 2-18
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Mode
Electric . . . . . . . . . . . . . . . . . . . . . . . 9-24
Extended Range . . . . . . . . . . . . . . 9-24
Modes Driver Selected . . . . . . . . . . . . . . . 9-25
Maintenance . . . . . . . . . . . . . . . . . . 9-28
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-51
Mountain Mode Light . . . . . . . . . . 5-24
MP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Multi-band Antenna . . . . . . . . . . . . 7-13
N
Navigation OnStar®. . . . . . . . . . . . . . . . . . . . . . 14-2
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . 13-17
New Vehicle Break-In . . . . . . . . . . 9-17
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-52
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-14 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . . 9-7
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Engine Oil Life System . . . . . 10-12
Messages . . . . . . . . . . . . . . . . . . . . 5-50
Pressure Light . . . . . . . . . . . . . . . . 5-26
Older Children, Restraints . . . . . 3-33
Online Owner Center . . . . . . . . . . 13-5