
Black plate (16,1)Chevrolet Sonic Owner Manual - 2012
9-16 Driving and Operating
A (STOPPING THE ENGINE/
LOCK/OFF):When the vehicle is
stopped, turn the ignition switch to
LOCK/OFF to turn the engine off.
This position locks the steering
wheel, ignition, and transmission.
Do not turn the engine off when the
vehicle is moving. This will cause a
loss of power assist in the brake
and steering systems and disable
the airbags.
If the vehicle must be shut off in an
emergency:
1. Brake using a firm and steady pressure. Do not pump the
brakes repeatedly. This may
deplete power assist, requiring
increased brake pedal force.
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 ignition
to LOCK/OFF. On vehicles with
an automatic transmission, the
shift lever must be in P (Park) to
turn the ignition switch to the
LOCK/OFF position.
4. Set the parking brake. See Parking Brake on page 9‑28.
{WARNING
Turning off the vehicle while
moving may cause loss of power
assist in the brake and steering
systems and disable the airbags.
While driving, only shut the
vehicle off in an emergency.
If the vehicle cannot be pulled over,
and must be shut off while driving,
turn the ignition to ACC/
ACCESSORY. Notice:
Using a tool to force the
key to turn in the ignition could
cause damage to the switch or
break the key. Use the correct
key, make sure it is all the way in,
and turn it only with your hand.
If the key cannot be turned by
hand, see your dealer.
B (ACC/ACCESSORY): This is the
position in which you can operate
things like the radio and the
windshield wipers when the engine
is off.
C (ON/RUN): This position can be
used to operate the electrical
accessories and to display some
instrument panel cluster warning
and indicator lights. This position
can also be used for service and
diagnostics, and to verify the proper
operation of the malfunction
indicator lamp as may be required
for emission inspection purposes.
The switch stays in this position
when the engine is running.

Black plate (42,1)Chevrolet Sonic Owner Manual - 2012
10-42 Vehicle Care
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle
tire size.
(A) Passenger (P‐Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire
and Rim Association.
(B) Tire Width
:The three‐digit
number indicates the tire section
width in millimeters from
sidewall to sidewall. (C) Aspect Ratio
:A two‐digit
number that indicates the tire
height‐to‐width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item C of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide.
(D) Construction Code
:A
letter code is used to indicate
the type of ply construction in
the tire. The letter R means
radial ply construction; the
letter D means diagonal or bias
ply construction; and the letter B
means belted‐bias ply
construction.
(E) Rim Diameter
:Diameter of
the wheel in inches.
(F) Service Description
:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples
of optional accessories are
automatic transmission, power
steering, power brakes, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width.

Black plate (7,1)Chevrolet Sonic Owner Manual - 2012
INDEX i-7
Lights (cont'd)Engine Coolant
Temperature Warning . . . . . . . 5-18
Engine Oil Pressure . . . . . . . . . . 5-19
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Front Fog Lamp . . . . . . . . . . . . . . 5-21
High-Beam On . . . . . . . . . . . . . . . . 5-21
High/Low Beam Changer . . . . . . 6-2
Immobilizer . . . . . . . . . . . . . . . . . . . 5-20
Low Fuel Warning . . . . . . . . . . . . 5-20
Reduced Engine Power . . . . . . 5-21
Safety Belt Reminders . . . . . . . . 5-10
Service Vehicle Soon . . . . . . . . . 5-15
Speed Sensitive Power
Steering (SSPS) Warning . . . 5-17
Tire Pressure . . . . . . . . . . . . . . . . . 5-19
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-18
Traction Off . . . . . . . . . . . . . . . . . . . 5-17
Up-Shift . . . . . . . . . . . . . . . . . . . . . . 5-17
Load Compartment . . . . . . . . . . . . . 4-1
Locks Automatic Door . . . . . . . . . . . . . . . . 2-7
Central Locking System . . . . . . . 2-7
Delayed Locking . . . . . . . . . . . . . . . 2-7
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Loss of Control . . . . . . . . . . . . . . . . . 9-6
Low Fuel Warning Light . . . . . . . . 5-20
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-41
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-16
Maintenance Schedule Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-13
Malfunction Indicator Lamp . . . . 5-13
Manual Mirrors . . . . . . . . . . . . . . . . 2-13
Manual Mode . . . . . . . . . . . . . . . . . . 9-25
Manual Transmission . . . . . . . . . . 9-26
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-13
Manual Windows . . . . . . . . . . . . . . 2-15
Messages
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-26
Mirrors Convex . . . . . . . . . . . . . . . . . . . . . . . 2-12
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-13
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-13 Mirrors (cont'd)
Manual . . . . . . . . . . . . . . . . . . . . . . . 2-13
Manual Rearview . . . . . . . . . . . . . 2-14
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-46N
Navigation, OnStar®. . . . . . . . . . . 14-2
New Vehicle Break-In . . . . . . . . . . 9-15
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 5-9 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Engine Oil Life System . . . . . 10-12
Pressure Light . . . . . . . . . . . . . . . . 5-19
Older Children, Restraints . . . . . 3-33
Online Owner Center . . . . . . . . . . 13-4

Black plate (10,1)Chevrolet Sonic Owner Manual - 2012
i-10 INDEX
Satellite Radio . . . . . . . . . . . . . . . . . 7-11
Scheduling Appointments . . . . . . 13-7
Sealant Kit, Tire . . . . . . . . . . . . . . 10-60
SeatsAdjustment, Front . . . . . . . . . . . . . . 3-4
Head Restraints . . . . . . . . . . . . . . . 3-2
Heated Front . . . . . . . . . . . . . . . . . . 3-7
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Reclining Seatbacks . . . . . . . . . . . 3-5
Securing Child Restraints . . . . . . . . . . . . . . 3-47, 3-49
Security Vehicle . . . . . . . . . . . . . . . . . . . . . . . 2-11
Security, OnStar
®. . . . . . . . . . . . . . 14-2
Service Accessories and
Modifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-4
Engine Soon Light . . . . . . . . . . . . 5-13
Maintenance Records . . . . . . .11-16
Maintenance, General Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1 Service (cont'd)
Publications Ordering
Information . . . . . . . . . . . . . . . . .13-11
Scheduling Appointments . . . . . 13-7
Vehicle Soon Light . . . . . . . . . . . . 5-15
Servicing the Airbag . . . . . . . . . . . 3-30
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . 10-26
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 9-20
Out of Park . . . . . . . . . . . . . . . . . . . 9-21
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 6-4
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . 10-73
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 12-2
Speed Sensitive Power Steering (SSPS) Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Speedometer . . . . . . . . . . . . . . . . . . . 5-9 StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 5-18
System . . . . . . . . . . . . . . . . . . . . . . . 9-31
Start Vehicle, Remote . . . . . . . . . . 2-4
Starter Switch Check . . . . . . . . . 10-25
Starting the Engine . . . . . . . 1-3, 9-17
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-2
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . 10-31
Storage Load Compartment . . . . . . . . . . . . 4-1
Storage Areas Cargo Cover . . . . . . . . . . . . . . . . . . . 4-2
Glove Box . . . . . . . . . . . . . . . . . . . . . 4-1
Instrument Panel . . . . . . . . . . . . . . 4-1
Storing the Tire Sealant and Compressor Kit . . . . . . . . . 10-67
Stuck Vehicle . . . . . . . . . . . . . . . . . . 9-10
Sun Visors . . . . . . . . . . . . . . . . . . . . . 2-16
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . iv
System Infotainment . . . . . . . . . . . . . . . . . . . 7-1