2011 CHEVROLET VOLT maintenance

Black plate (4,1)Chevrolet Volt Owner Manual - 2011
9-4 Driving and Operating
Maintenance
Always keep the tires properly
inflated and the vehicle properly
aligned.
The weight of excess cargo in the
vehicle affects efficiency and range.
Avoid carrying more than is needed.
If fuel is not regularly used, consider
keeping the fuel tank only one‐third
full. Excess fuel weight impacts
efficiency and range.
Use premium fuel.
Avoid unnecessary use of electrical
accessories. Power used for
functions other than propelling
the vehicle will reduce EV range.
Using a rooftop carrier will reduce
efficiency due to additional weight
and drag.Defensive Driving
Defensive driving means“always
expect the unexpected.” The first
step in driving defensively is to wear
the safety belt. See Safety Belts on
page 3‑10.
{WARNING
Assume that other road users
(pedestrians, bicyclists, and other
drivers) are going to be careless
and make mistakes. Anticipate
what they might do and be ready.
In addition:
.Allow enough following
distance between you and
the driver in front of you.
.Focus on the task of driving.
Driver distraction can cause
collisions resulting in injury or
possible death. These simple
defensive driving techniques
could save your life.
Drunk Driving
{WARNING
Drinking and then driving is
very dangerous. Your reflexes,
perceptions, attentiveness, and
judgment can be affected by
even a small amount of alcohol.
You can have a serious —or
even fatal —collision if you
drive after drinking.
Do not drink and drive or ride with
a driver who has been drinking.
Ride home in a cab; or if you are
with a group, designate a driver
who will not drink.
Death and injury associated with
drinking and driving is a global
tragedy.

Black plate (6,1)Chevrolet Volt Owner Manual - 2011
9-6 Driving and Operating
And, of course, actual stopping
distances vary greatly with the
surface of the road, whether it is
pavement or gravel; the condition
of the road, whether it is wet, dry,
or icy; tire tread; the condition of the
brakes; the weight of the vehicle;
and the amount of brake force
applied.
Avoid needless heavy
braking. Some people drive in
spurts—heavy acceleration
followed by heavy braking —rather
than keeping pace with traffic.
This is a mistake. The brakes
might not have time to cool between
hard stops. The brakes will wear
out much faster with a lot of heavy braking. Keeping pace with the
traffic and allowing realistic following
distances eliminates a lot of
unnecessary braking. That means
better braking and longer brake life.
If propulsion is disabled while
the vehicle is being driven, brake
normally but do not pump the
brakes. If the brakes are pumped,
the pedal could get harder to push
down. If propulsion stops, there
will still be some power brake assist
but it will be used when the brake
is applied. Once the power assist is
used up, it can take longer to stop
and the brake pedal will be harder
to push.Steering
Electric Power Steering
If propulsion is disabled, the power
steering assist system may continue
to operate until you are able to stop
the vehicle. If power steering assist
is lost because the electric power
steering system is not functioning,
the vehicle can be steered but it
will take more effort.
The electric power steering
system does not require regular
maintenance. If you suspect
steering system problems and/or
the SERVICE POWER STEERING
message comes on, contact your
dealer for service. See
Service
Vehicle Messages on page 5‑51.

Black plate (22,1)Chevrolet Volt Owner Manual - 2011
9-22 Driving and Operating
Restarting Procedure
If the vehicle must be restarted
while it is still moving, move the
shift lever to N (Neutral) and
press the POWER
Obutton twice
without pressing the brake pedal.
The propulsion system will not
restart in any other position.
Computers determine when the
engine needs to run. The engine
may start, if required, when the
propulsion system is on. Some
vehicle conditions that force the
engine to run are:
.Cold ambient temperatures.
.The hood is open or not
completely latched.
.The high voltage battery has a
low charge.
.The engine is needed to
maintain the high voltage
battery temperature.
.The engine needs to run for
maintenance. See
Maintenance Modes on
page 9‑28.
A chime will sound if the driver
door is opened while the vehicle
is in ON/RUN. Always press the
POWER
Obutton to turn the
vehicle off before exiting.
Stopping Procedure
For information on how to turn the
vehicle off, see Power Button on
page 9‑18.
Retained Accessory
Power (RAP)
The following features will operate
for up to 10 minutes or until the
driver door is opened:
.Audio System
.Power Windows
.Accessory Power Outlets
Shifting Into Park
{WARNING
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake firmly set. The vehicle can
roll. If you have left the propulsion
system on, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow.
1. Hold the brake pedal down and set the parking brake.
See Electric Parking Brake on
page 9‑35 for more information.
2. Move the shift lever into P (Park) by pushing the lever all the way
toward the front of the vehicle.
3. Turn the vehicle off.

Black plate (25,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-25
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.
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, the engine will run without
turning off if the vehicle is on.
The high voltage battery is neither
charged nor discharged when this
occurs.
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 on page 5‑21.

Black plate (28,1)Chevrolet Volt Owner Manual - 2011
9-28 Driving and Operating
Press the Drive Mode button again
to return to Normal Mode and it
becomes active in three seconds.
If Mountain Mode is not selected
for these conditions, propulsion
power may be reduced and the
engine speed may increase. See
Propulsion Power Messages on
page 5‑50.
The vehicle returns to Normal Mode
at each start to maintain a smaller
battery charge reserve for normal
driving.
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. 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 will stop running
after the self test is completed,
and based on the current mode
of operation. See
Fuel System
Messages on page 5‑48 and
Service Vehicle Messages on
page 5‑51.
Maintenance Modes
Engine Maintenance Mode (EMM)
Engine Maintenance Mode
(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 center stack display at
vehicle start.
If Yes is selected, EMM will begin.
The engine will run for a set
amount of time without turning off.

Black plate (29,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-29
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 only one day.
If the EMM request was delayed
for one day, EMM will automatically
start the engine at the next vehicle
start. An EMM Notification screen
will appear in the center stack
display.
If the vehicle shuts off during EMM,
it will restart the next time the
vehicle is driven. A message
displays to indicate that EMM
is active.
If EMM is required and the fuel level
is low, EMM may eventually empty
the fuel tank if fuel is not added.
This will result in reduced, or no
power. An adequate fuel level must
be maintained in the vehicle to keep
it operational. SeePropulsion Power
Messages on page 5‑50.Fuel Maintenance Mode (FMM)
Fuel Maintenance Mode (FMM)
tracks average fuel age. Old
fuel can cause engine problems.
If low engine usage causes average
fuel age to exceed approximately
one year, FMM will run the engine to
use up the old fuel. The engine will
run until enough fresh fuel is added
to bring the average fuel age into
an acceptable range. Allowing more
old fuel to be used up by FMM and
adding a larger amount of fresh fuel
will maximize the length of time
before another fuel maintenance
mode is needed. During FMM the
engine may turn on and off.

Black plate (57,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-57
The following are the minimum
requirements for circuits used to
charge this vehicle:
.120V/15Amp
.240V/20Amp
Charging equipment with a
rating of at least 240V/20Amp
will provide the fastest charging
time to recharge the high voltage
battery. 240V/40Amp circuits
provide flexibility for future vehicle
charging needs. Contact your
dealer for more information.
Do not use non‐grounded electrical
plug adapters.
Notice: Do not use portable or
stationary backup generating
equipment to charge the vehicle.
This may cause damage to the
vehicle's charging system. Only
charge the vehicle from utility
supplied power.
Fuel
Use of the recommended fuel
is an important part of the proper
maintenance of this vehicle.
To help keep the engine clean
and maintain optimum vehicle
performance, we recommend
the use of gasoline advertised as
TOP TIER Detergent Gasoline.
Look for the TOP TIER label on
the fuel pump to ensure gasoline
meets enhanced detergency
standards developed by auto
companies. A list of marketers
providing TOP TIER Detergent
Gasoline can be found at
www.toptiergas.com.
Use premium unleaded gasoline
with a posted octane rating of 91
or higher. If the octane is less than
91, you could damage the engine.
If heavy knocking is heard when
using gasoline rated at 91 octane
or higher, the engine needs service.

Black plate (8,1)Chevrolet Volt Owner Manual - 2011
10-8 Vehicle Care
Vehicle Checks
Doing Your Own
Service Work
{WARNING
Never try to do your own
service on high voltage battery
components. You can be injured
and the vehicle can be damaged
if you try to do your own service
work. Service and repair of these
high voltage battery components
should only be performed by a
trained service technician with
the proper knowledge and tools.
Exposure to high voltage
can cause shock, burns, and
even death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.(Continued)
WARNING (Continued)
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering. Do not probe,
tamper with, cut, or modify high
voltage cable or wiring.
{WARNING
You can be injured and the
vehicle could be damaged if you
try to do service work on a vehicle
without knowing enough about it.
.Be sure you have sufficient
knowledge, experience,
the proper replacement
parts, and tools before
attempting any vehicle
maintenance task.(Continued)
WARNING (Continued)
.Be sure to use the proper
nuts, bolts, and other
fasteners. Metric and
English fasteners can be
easily confused. If the wrong
fasteners are used, parts
can later break or fall off.
You could be hurt.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see Service
Publications Ordering Information
on page 13‑12.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Airbag System
Check on page 3‑40.