2018 CHEVROLET VOLT engine

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Driving and Operating 167
Warning (Continued)
the fan speed to the highest
setting. See“Climate
Control Systems.”
For more information about CO,
see Engine Exhaust 0182.
To save fuel, start the vehicle for
short periods to warm the vehicle
and then shut the engine off and
partially close the window. Moving
about to keep warm also helps.
If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
The Traction Control System (TCS)
must be turned off by pressing the
TCS/ESC button. Traction control is
not completely off, but will only
engage if the maneuver can cause
damage to the electric drive unit.
{Warning
If the vehicle's tires spin at high
speed, they can explode, and you
or others could be injured. The
vehicle can overheat, causing an
engine compartment fire or other
damage. Spin the wheels as little
as possible and avoid going
above 56 km/h (35 mph).
Rocking the Vehicle to Get
it Out
Turn the steering wheel left and
right to clear the area around the
front wheels. Shift back and forth
between R (Reverse) and a forward
gear, spinning the wheels as little as
possible. The Traction Control
System prevents the tires from
spinning at high speeds. To prevent
electric drive unit wear, wait until the
wheels stop spinning before shifting
gears. Release the accelerator
pedal while shifting, and press
lightly on the accelerator pedal
when the electric drive unit is in
gear. Slowly spinning the wheels in the forward and reverse directions
causes a rocking motion that could
free the vehicle. If that does not get
the vehicle out after a few tries, it
might need to be towed out. If the
vehicle does need to be towed out,
see
Towing the Vehicle 0311.
Vehicle Load Limits
It is very important to know how
much weight the vehicle can
carry. This weight is called the
vehicle capacity weight and
includes the weight of all
occupants, cargo, and all
nonfactory-installed options.
Two labels on the vehicle may
show how much weight it may
properly carry: the Tire and
Loading Information label and
the Certification label.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Driving and Operating 171
Warning (Continued)
. Secure loose items in the
vehicle.
.Do not leave a seat
folded down unless
needed.
Starting and
Operating
New Vehicle Break-In
The vehicle does not require a
break-in period. Vehicle break-in is
performed during manufacturing.
Power Button
The vehicle has an electronic
pushbutton start. The POWER
O
light flashes when the driver door is
open and the vehicle is not on. The
flashing light will eventually time out. The light is on steady when in ON/
RUN power mode. When the vehicle
is turned off, the POWER
Olight
will turn off.
The Remote Keyless Entry (RKE)
transmitter must be in the vehicle for
the system to operate. If the vehicle
will not start, place the RKE
transmitter in the transmitter pocket.
See Remote Keyless Entry (RKE)
System Operation 032.
ON/RUN : This position is for
starting and driving. With the vehicle
off, and the brake pedal applied,
pressing POWER
Oonce will place
the vehicle in ON/RUN. When the
READY light is on in the instrument
cluster, the vehicle is ready to be
driven. This could take up to
15 seconds at extremely cold
temperatures. See Vehicle Ready
Light 0121. The engine will only
start if needed. If the vehicle did not
start, the instrument cluster will
display a screen with inactive fuel
and battery gauges. See Starting
and Stopping the Vehicle 0172.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
172 Driving and Operating
STOPPING THE VEHICLE/OFF :
To turn the vehicle off, press
POWER
Owith the vehicle in
P (Park). Retained Accessory Power
(RAP) will remain active until the
driver door is opened. See Retained
Accessory Power (RAP) 0174.
When turning off the vehicle, if the
vehicle is not in P (Park), the vehicle
will go to ACC/ACCESSORY and
display the message SHIFT TO
PARK in the Driver Information
Center (DIC).
If the vehicle must be shut off in an
emergency:
1. Brake using a firm and steady pressure. Do not pump the
brakes.
2. Shift the vehicle to N (Neutral). This can be done while the
vehicle is moving. After shifting
to N (Neutral), firmly apply the
brakes and steer the vehicle to
a safe location.
3. Come to a complete stop, shift to P (Park), and turn the vehicle
off by pressing POWER
O. 4. Set the parking brake. See
Electric Parking Brake 0185.
{Warning
Turning off the vehicle while
moving may disable the airbags.
While driving, only shut the
propulsion system off in an
emergency.
If the vehicle cannot be pulled over,
and must be shut off while driving,
press and hold POWER
Ofor
longer than two seconds, or press
twice in five seconds.
Service Mode
Caution
Placing the vehicle in Service
Mode will use the 12-volt battery.
Do not use Service Mode for an
extended period, or the vehicle
may not start. This power mode is available for
service and diagnostics, and to
verify the proper operation of the
malfunction indicator lamp as may
be required for emission inspection
purposes. With the vehicle off, and
the brake pedal not applied,
pressing and holding POWER
Ofor
more than five seconds will place
the vehicle in Service Mode. The
instruments and audio systems will
operate as they do in ON/RUN, but
the vehicle will not be able to be
driven. The propulsion system will
not start in Service Mode. Press the
button again to turn the vehicle off.
Starting and Stopping the
Vehicle
Computers determine when the
engine needs to run. The engine
may start, if required, when the
propulsion system is on.
Starting Procedure
Move the shift lever to P (Park) or
N (Neutral). The propulsion system
will not start in any other position.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Driving and Operating 173
Caution
Do not try to shift to P (Park) if the
vehicle is moving or the electric
drive unit could be damaged.
Shift to P (Park) only when the
vehicle is stopped.
Caution
If you add electrical parts or
accessories, you could change
the way the vehicle operates. Any
resulting damage would not be
covered by the vehicle warranty.
SeeAdd-On Electrical Equipment
0 232.
The Remote Keyless Entry (RKE)
transmitter must be in the vehicle.
Press the brake pedal and press
and release POWER
O. If the RKE transmitter is not in the
vehicle or something is interfering
with the transmitter, a message
displays in the Driver Information
Center (DIC).
If the vehicle will not start due to a
low RKE transmitter battery, the
vehicle can still be driven. See
“Starting the Vehicle with a Low
Transmitter Battery”
inRemote
Keyless Entry (RKE) System
Operation 032.
A Welcome, Ready, and Good-bye
audio message will be heard in the
vehicle and animated on the
instrument cluster when opening the
driver door upon entry, when the
vehicle is ready to be driven, and
when the vehicle is turned off.
The instrument cluster displays an
active fuel and/or battery gauge,
along with an audio startup cue,
when the vehicle is ready to be
driven. This could take up to
15 seconds at extremely cold
temperatures. The engine will only
start if needed. If the vehicle did not
start, the instrument cluster will display a screen with inactive fuel
and battery gauges. See
Starting
and Stopping the Vehicle 0172.
Restarting Procedure
If the vehicle must be restarted
while it is still moving, move the shift
lever to N (Neutral) and press
POWER
Otwice without pressing
the brake pedal. The propulsion
system will not restart in any other
position.
Forced Engine On
Some vehicle conditions that force
the engine to run:
. There are cold ambient
temperatures.
. The hood is open or not
completely latched while the
vehicle is not in N (Neutral).
. The high voltage battery has a
low charge.
. The engine needs to run for
maintenance.
See Maintenance Modes 0180.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
176 Driving and Operating
Extended Parking
It is best not to park with the vehicle
running. If the vehicle is left running,
be sure it will not move and there is
adequate ventilation.
SeeShifting Into Park 0174 and
Engine Exhaust 0182.
If the vehicle is left parked and
running with the RKE transmitter
outside the vehicle, it will turn off
after one hour.
If the vehicle is left parked and
running with the RKE transmitter
inside the vehicle, it will turn off after
two hours.
The vehicle could turn off sooner if it
is parked on a hill, due to lack of
available fuel.
The timer will reset if the vehicle is
shifted out of P (Park) while it is
running.
Electric Vehicle
Operating Modes
System Operation
This vehicle is an Extended Range
Electric Vehicle (EREV). It uses an
electric propulsion system to drive
the vehicle at all times. Electricity is
the vehicle's primary source of
energy, while gasoline is the
secondary source.
The vehicle has two modes of
operation: Electric and Extended
Range. In Electric Mode, the vehicle
is propelled by its electric drive unit
only. It converts electrical energy
into mechanical energy to drive the
wheels. In Extended Range Mode,
both the battery and the engine
power the vehicle. The vehicle's
performance remains nearly the
same in either mode. See Driving
for Better Energy Efficiency 027.
Electric Mode
In Electric Mode, the vehicle does
not use fuel or produce tailpipe
emissions. During this primary
mode, the vehicle is powered by
electrical energy stored in the high
voltage battery. The vehicle can
operate in this mode until the
battery has reached a low charge.
There are some conditions when the
battery charge is high enough to
provide Electric Mode operation, but
the engine still runs. They are:
.
Cold ambient temperatures.
. Hot or cold high voltage battery
temperatures.
. The hood being open or not
completely closed and latched.
. Certain high voltage battery fault
conditions.
. Engine Maintenance Mode or
Fuel Maintenance Mode
being run.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Driving and Operating 177
Extended Range Mode
When the vehicle reaches the end
of its electric range, it switches to
Extended Range Mode (ERM). In
this secondary mode, electricity is
produced by the fuel-powered
engine. This secondary source of
electric power extends the vehicle
range. Operation will continue in
ERM until the vehicle can be
plugged in to recharge the high
voltage battery and restore
Electric Mode.
The high voltage battery will
continue to provide some power and
work together with the engine to
provide peak performance when it is
required, such as driving up a steep
incline or for high acceleration
maneuvers. The battery will not be
charged nor will electric vehicle
range be restored by the engine.
In either Electric Mode or Extended
Range Mode, when the hood is
open and the vehicle is moving at
low speed or stopped, the engine
will run without turning off if the
vehicle is on, except when theelectric drive unit is in N (Neutral).
The engine will turn off or remain off
at low vehicle speed in N (Neutral).
The high voltage battery is not
charged when this occurs. Under
these conditions, the high voltage
battery can still be discharged
based on the vehicle loads such as
A/C, or 12-volt loads.
In either Electric Mode or Extended
Range Mode, if there is a high
voltage battery fault, the engine may
run without turning off to generate
needed electricity. The malfunction
indicator lamp will turn on. See
Malfunction Indicator Lamp (Check
Engine Light)
0114.
Driver Selected Operating
Modes
While driving in Electric or Extended
Range Mode, additional operating
modes can be selected.
Press MODE to display selectable
drive modes in the Driver
Information Center (DIC). Continue
pressing to scroll through the
modes.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
Driving and Operating 179
performance. While driving in
Mountain Mode, the vehicle will
have less responsive acceleration.
Mountain Mode will not change
normal vehicle braking performance
for steep downhill grades.
SeeHill and Mountain Roads 0165
and Electric Drive Unit 0183.
Press MODE to select Mountain
Mode. If steep hill driving is
expected, it is recommended to
select Mountain Mode at least
20 minutes before driving on steep
grades. This will allow the vehicle
time to build a sufficient battery
charge reserve.
If Mountain Mode is not selected for
these conditions, propulsion power
may be reduced and the engine
speed may increase. See
Propulsion Power Messages 0136.
The engine may run when Mountain
Mode is selected, depending on the
high voltage battery charge, to build
reserve battery charge for uphill
climbs. If Mountain Mode is entered
with a sufficient battery charge
reserve, the battery charge reserve will appear grayed out and any
battery charge reserve still unused
upon exiting Mountain Mode will
return to normal appearance.
Press MODE again to return to
Normal Mode and it becomes active
after three seconds.
Each time the vehicle is started, it
will return to Normal Mode to
maintain a smaller battery charge
reserve for normal driving.
Hold Mode
Use Hold Mode on a trip where it is
expected that all of the electric
charge will be depleted. Use HoldMode mainly during highway or high
speed driving to maximize both EV
miles and fuel efficiency.
Hold Mode is only available when
the vehicle is in Electric Mode. This
mode places the remaining battery
charge into a reserve for the driver
to use as desired. Selecting this
mode transitions the vehicle to
Extended Range Mode to maintain
the battery charge reserve.
Upon exiting Hold Mode, the
reserved battery charge becomes
available again and the vehicle
returns to Electric Mode. If the
transition is from Hold Mode directly
to Mountain Mode, the electric
range displayed adjusts for the
Mountain Mode charge reserve.
Hold Mode will not change normal
vehicle acceleration or braking
performance.
Press MODE to select Hold Mode.
Press MODE again to return to
Normal Mode and it becomes active
after three seconds.

Chevrolet VOLT Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349113) - 2018 - crc - 10/12/17
180 Driving and Operating
Each time the vehicle is started, it
will return to Normal Mode.
Out of Fuel/Engine
Unavailable
If the vehicle runs out of fuel, or the
engine will not start due to a
malfunction, the vehicle can
continue to be driven in Electric
Mode until the current charge is
depleted. The vehicle will have less
responsive acceleration. DIC
messages indicate reduced
propulsion power, that the engine is
not available, and the need for fuel
or service.
Once the vehicle is refueled, or the
malfunction is corrected, the engine
will start the next time the vehicle is
turned on to perform a self test, and
DIC messages will not be displayed.
Once the engine starts successfully,
normal operation will continue in
either Electric or Extended Range
Mode. The engine may stop running
after the self test is completed,
based on the current mode of
operation.
Maintenance Modes
Engine Maintenance Mode (EMM)
EMM runs the engine to keep it in
good working condition after
approximately six weeks of no or
very limited engine operation. EMM
will force the engine to run, even if
there is a charge to power the
vehicle.
When EMM is needed, the EMM
Request screen appears on the
infotainment display at vehicle start.
If Yes is selected, EMM will begin.
The engine will not start until after a
short delay once shifted into
D (Drive). The engine will run for a
set amount of time without turningoff. During EMM, a DIC message
displays to show the
EMM percentage complete.
If No is selected, the EMM Request
screen will appear when the vehicle
is next started. The EMM request
can be delayed for up to one day.
If the EMM request was delayed for
one day, EMM will automatically
start the engine at the next vehicle
start. The engine will not start until
after a short delay once shifted into
D (Drive).
An EMM Notification screen will
appear in the infotainment display.
If the vehicle is shut off during EMM,
it will restart the next time the
vehicle is driven.