
Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 241
1. Windshield Washer FluidReservoir. See “Adding Washer
Fluid” under Washer Fluid
0 252.
2. Engine Air Cleaner/Filter 0245.
3. Engine Oil Fill Cap. See Engine Oil 0241.
4. Engine Oil Dipstick. See Engine Oil 0241.
5. Engine Cooling Fans (Out of View). See Cooling System
(Engine) 0246 orCooling
System (High Voltage Battery)
0 250 orCooling System
(Power Electronics and
Charger Modules) 0251.
6. Brake Fluid Reservoir. See Brake Fluid 0254.
7. Electric Drive Unit Fluid Cap.
8. High Voltage Battery Coolant Reservoir and Pressure Cap.
See Cooling System (Engine)
0 246 orCooling System (High
Voltage Battery) 0250 or
Cooling System (Power
Electronics and Charger
Modules) 0251. 9. Engine Coolant Surge Tank
and Pressure Cap. See
Cooling System (Engine) 0246
or Cooling System (High
Voltage Battery) 0250 or
Cooling System (Power
Electronics and Charger
Modules) 0251.
10. Remote Positive (+) Terminal. SeeJump Starting - North
America 0299.
11. Power Electronics Coolant Reservoir and Pressure Cap.
SeeCooling System (Engine)
0 246 orCooling System (High
Voltage Battery) 0250 or
Cooling System (Power
Electronics and Charger
Modules) 0251.
12. Engine Compartment Fuse
Block 0264.
13. Remote Negative (−) Terminal. SeeJump Starting - North
America 0299.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0243.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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250 Vehicle Care
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.
Cooling System (High
Voltage Battery)
During vehicle operation and also
during charging, the high voltage
battery cells in the vehicle are kept
within a normal operating
temperature range. If the high
voltage battery cell temperature
rises above the normal operating
temperature range, the battery
cooling system turns on the air
conditioning compressor and cools
the coolant until the correct battery
cell temperature is reached. If the
high voltage battery cell temperature
falls below the normal operating
temperature range, a high voltage
heater, located in the battery, heats
the coolant until the correct battery
cell temperature is reached.During high voltage battery system
cooling, you may feel temperature
changes at the air vents due to the
extra load on the system.
What to Use
The high voltage battery coolant
reservoir in the vehicle is filled with
GM Premix DEX-COOL engine
coolant. See
Recommended Fluids
and Lubricants 0329. If using this
mixture, nothing else needs to be
added.
The coolant needs to be replaced at
the appropriate interval. See
Maintenance Schedule 0321.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The high voltage battery coolant
reservoir is located in the engine
compartment. See Engine
Compartment Overview 0240.
1. High Voltage Battery
Coolant Reservoir
2. Power Electronics Coolant Reservoir
Check to see if coolant is visible in
the high voltage battery coolant
reservoir (1). 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 high voltage battery cooling
system supports the operation of
sensitive electronics that are critical
to vehicle operation.

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Vehicle Care 251
The high voltage battery cooling
system should only be serviced by a
qualified technician.
Cooling System (Power
Electronics and Charger
Modules)
The power electronics and charger
modules are cooled using the same
coolant loop.
The power electronics and charger
modules in the vehicle are kept
below a maximum temperature
threshold. If the coolant temperature
rises above this temperature
threshold, the electric cooling fans
will turn on and cool the coolant
until the correct temperature is
reached.
What to Use
The power electronics and charger
modules coolant reservoir in the
vehicle is filled with GM Premix
DEX-COOL engine coolant. See
Recommended Fluids and
Lubricants0329. If using this
mixture, nothing else needs to be
added.
The coolant needs to be replaced at
the appropriate interval. See
Maintenance Schedule 0321.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The power electronics and charger
modules coolant reservoir is located
in the engine compartment. See
Engine Compartment Overview
0240.
1. High Voltage Battery
Coolant 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.

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Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the
paint finish can be damaged.
Immediately wash off any painted
surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove
the cap and do not add fluid.
This vehicle has a high voltage
battery and a standard 12-volt
battery. The 12-volt battery is in the
rear hatch under the load floor.
If the vehicle is 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. The SERVICE VEHICLE
SOON message in the Driver
Information Center (DIC) will be
displayed. Before the vehicle can be
operated again, it must be serviced
at your dealer.See
“If a Crash Occurs” under
Collision Damage Repair 0342 and
High Voltage Safety Information
0 21. If an airbag has inflated, see
What Will You See after an Airbag
Inflates? 072.
Only a trained service technician
with the proper knowledge and tools
should inspect, test, or replace the
high voltage battery. See your
dealer if the high voltage battery or
12-volt battery needs service. The
dealer has information on how to
recycle the high voltage battery.
There is also information available
at http://www.recyclemybattery.com.
Keep the vehicle plugged in, even
when fully charged, to keep the high
voltage battery temperature ready
for the next drive and prolong
battery life. This is important when
outside temperatures are extremely
hot or cold.
A vehicle cover, which can reduce
sun loading on the vehicle and
improve high voltage battery life, is
available from your dealer. Refer to the replacement number
shown on the original battery label
when a new 12-volt battery is
needed. The vehicle has an
Absorbed Glass Mat (AGM) 12-volt
battery. Installation of a standard
12-volt battery will result in reduced
12-volt battery life.
When using a 12-volt battery
charger on the 12-volt AGM battery,
some chargers have an AGM
battery setting on the charger.
If available, use the AGM setting on
the charger, to limit charge voltage
to 14.8 volts. Follow the charger
manufacturer's instructions.
{Warning
WARNING:
Battery posts,
terminals, and related
accessories contain lead and lead
compounds, chemicals known to
the State of California to cause
cancer and birth defects or other
reproductive harm. Batteries also
contain other chemicals known to
(Continued)

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256 Vehicle Care
Warning (Continued)
the State of California to cause
cancer.WASH HANDS AFTER
HANDLING. For more information
go to www.P65Warnings.ca.gov/
passenger-vehicle.
See California Proposition
65 Warning 0236 and the back
cover.
Vehicle Storage
{Warning
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting -
North America 0299 for tips on
working around a battery without
getting hurt. Up to Four Weeks
.
Plug in the high voltage battery
charge cord if temperatures will
exceed 35 °C (95 °F) and keep
the 12-volt battery cables
connected.
Four Weeks to 12 Months
. Discharge the high voltage
battery until two or three bars
remain on the battery gauge on
the instrument cluster. See
Battery Gauge (High Voltage)
0110.
. Do not plug in the high voltage
battery charge cord.
. Remove the black negative (−)
cable from the 12-volt battery.
Attach a trickle charger to the
battery terminals or keep the
12-volt battery cables connected
and trickle charge from the
underhood remote positive (+)
and negative (−) terminals. See
Jump Starting - North America
0299 for the location of these
terminals.
Caution
The vehicle is equipped with an
AGM/VRLA 12-volt battery, which
can be damaged by using the
incorrect type of trickle charger.
An AGM/VRLA-compatible
charger must be used, with the
appropriate setting selected.
Follow the trickle charger
manufacturer instructions.
Reconnecting the 12-Volt Black
Negative Cable
With the 12-volt black negative (−)
cable disconnected, the hatch
cannot be opened by pressing the
touch pad on the underside of the
hatch. If the hatch is closed and
latched after power has been
disconnected: 1. Use the door key to open the driver door.
2. Manually unlock and open one of the rear doors.
3. Lower one of the rear seatbacks.

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Vehicle Care 257
4. Pull the load floor coverforward to access and
reconnect the 12-volt battery
black negative (−) cable.
5. After the cable has been connected, open the hatch and
then tighten the cable.
After the battery cable is
reconnected, it is possible that the
vehicle may not operate in Electric
Mode. If this happens, the high
voltage battery may need to be
charged.
Electric Drive Unit Shift
Lock Control Function
Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured. 1. Before starting this check, be
sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Firmly apply the parking brake. See Electric Parking Brake
0 183.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the vehicle off and the brake not applied, press and
hold POWER
Ofor more than
five seconds to place the
vehicle in Service Mode. See
Power Button 0168. Without
applying the regular brake, try
to move the shift lever out of
P (Park) with normal effort.
If the shift lever moves out of
P (Park), contact your dealer
for service.
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the Electric Parking Brake (EPB).
. To check the EPB's holding
ability: With the propulsion
system active and the electric
drive unit in N (Neutral), slowly
remove foot pressure from the
regular brake pedal. Do this until
the vehicle is held by the
EPB only.

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Vehicle Care 279
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
{Warning
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 battery-electric
range.
Overinflated tires, or tires that
have too much air, can
result in:
(Continued)
Warning (Continued)
.Unusual wear.
.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 0164.
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.
How to Check
Use a good quality pocket-type
gauge to check the 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 the pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further adjustment is necessary.

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Vehicle Care 283
When the low tire pressure warning
light comes on:1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated. The turn signal
lamp will flash.
When the recommended
pressure is reached, the horn
sounds once and the turn
signal lamp will stop flashing
and briefly turn solid.
Repeat these steps for all
underinflated tires that have
illuminated the low tire pressure
warning light.{Warning
Overinflating a tire could cause
the tire to rupture and you or
others could be injured. Do not
exceed the maximum pressure
listed on the tire sidewall.
See Tire Sidewall Labeling 0274
and Vehicle Load Limits 0164.
If the tire is overinflated by more
than 35 kPa (5 psi), the horn will
sound multiple times and the turn
signal lamp will continue to flash for
several seconds after filling stops.
To release and correct the pressure,
while the turn signal lamp is still
flashing, briefly press the center of
the valve stem. When the
recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash
within 15 seconds after starting to
inflate the tire, the tire fill alert has
not been activated or is not working.
If the hazard warning flashers are
on, the tire fill alert visual feedback
will not work properly. The TPMS will not activate the tire
fill alert properly under the following
conditions:
.
There is interference from an
external device or transmitter.
. The air pressure from the
inflation device is not sufficient
to inflate the tire.
. There is a malfunction in
the TPMS.
. There is a malfunction in the
horn or turn signal lamps.
. The identification code of the
TPMS sensor is not registered to
the system.
. The battery of the TPMS sensor
is low.
If the tire fill alert does not operate
due to TPMS interference, move the
vehicle about 1 m (3 ft) back or
forward and try again. If the tire fill
alert feature is not working, use a
tire pressure gauge.