
Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
256 Vehicle Care
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
Caution
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 fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
(Continued)
Caution (Continued)
.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 Limits0178.
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. Do not forget the compact
spare, if the vehicle has one.
The cold compact spare tire
pressure should be at 420 kPa
(60 psi). SeeCompact Spare
Tire0274.
How to Check
Use a good quality pocket-type
gauge to check 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 a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Vehicle Care 263
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,
GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. SeeTire Sidewall
Labeling0250.
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the
performance of the vehicle.
Braking and handling
performance may be adversely
affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. SeeTire
Rotation0261.However,ifitis
necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y a n d Z R s p e e d r a t e d
tires. Never exceed the winter
tires’maximum speed capability
when using winter tires with a
lower speed rating.
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Vehicle Care 267
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
Do not use tire chains. There is
not enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
parts. The area damaged by the
tire chains could cause loss of
control and a crash.
Use another type of traction
device only if its manufacturer
recommends it for the vehicle's
tire size combination and road
conditions. Follow that
manufacturer's instructions. To
avoid vehicle damage, drive slow
and readjust or remove the
traction device if it contacts the
vehicle. Do not spin the wheels.
If traction devices are used, install
them on the front tires.
If a Tire Goes Flat
It is unusual for a tire to blow outwhile driving, especially if the tiresare maintained properly. SeeTires0248.Ifairgoesoutofatire,itismuch more likely to leak out slowly.But if there ever is a blowout, hereare a few tips about what to expectand what to do:
If a front tire fails, the flat tirecreates a drag that pulls the vehicletoward that side. Take your foot offthe accelerator pedal and grip thesteering wheel firmly. Steer tomaintain lane position, and thengently brake to a stop, well off theroad, if possible.
Arearblowout,particularlyonacurve, acts much like a skid andmay require the same correction asused in a skid. Stop pressing theaccelerator pedal and steer tostraighten the vehicle. It may bevery bumpy and noisy. Gently braketo a stop, well off the road,if possible.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Vehicle Care 277
{Warning
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Connect one end of the redpositive (+) cable to thepositive (+) terminal on thedischarged battery.
6. Connect the other end of thered positive (+) cable to thepositive (+) terminal of the goodbattery.
7. Connect one end of the blacknegative (–)cabletothenegative (–)terminalofthegood battery.
8. Connect the other end of theblack negative (–)cabletothenegative (–)postforthedischarged battery.
9. Start the engine in the vehiclewith the good battery and runthe engine at idle speed for atleast four minutes.
10. Try to start the vehicle that hadthe dead battery. If it will notstart after a few tries, itprobably needs service.
Caution
If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
vehicle. The repairs would not be
covered by the vehicle warranty.
Always connect and remove the
jumper cables in the correct order,
making sure that the cables do
not touch each other or other
metal.
Jumper Cable Removal
Reverse the sequence exactly whenremoving the jumper cables.
After starting the disabled vehicleand removing the jumper cables,allow it to idle for several minutes.
Towing the Vehicle
Caution
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to
suspension components. Use the
proper straps around the tires to
secure the vehicle.
Have the vehicle towed on a flatbedcar carrier. A wheel lift tow truckcould damage the vehicle.
Consult your dealer or aprofessional towing service if thedisabled vehicle must be towed.
Recreational Vehicle
Towing
Recreational vehicle towing meanstowing the vehicle behind anothervehicle, such as a motor home. Thetwo most common types ofrecreational vehicle towing are

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
324 OnStar
from each other and use acombination of letters, numbers,and symbols to increase thesecurity.
.Change the default name of theSSID (Service Set Identifier).This is your network’snamethatis visible to other wirelessdevices. Choose a unique nameand avoid family names orvehicle descriptions.
OnStar Wi-Fi®Hotspot (IfEquipped)
The vehicle may have a built-inWi-Fi hotspot that provides accessto the Internet and web content at4G LTE speed. Up to seven mobiledevices can be connected. A dataplan is required. Use the in-vehiclecontrols only when it is safe todo so.
1. To retrieve Wi-Fi hotspot
information, press=,waitfor
the prompt, then say“Wi-Fisettings.”On some vehicles,touch Wi-Fi Settings on thescreen.
2. The Wi-Fi settings will displaythe Wi-Fi hotspot name (SSID),password, and on somevehicles, the connection type(no Internet connection, 3G,4G, 4G LTE), and signal quality(poor, good, excellent).
3. To change the SSID or
password, pressQor call
1-888-4ONSTAR to connectwith an Advisor.
After initial set-up, your vehicle’sWi-Fi hotspot will connectautomatically to your mobiledevices. Manage data usage byturning Wi-Fi on or off on yourmobile device, using theRemoteLink mobile app, or bycontacting an OnStar Advisor.
OnStar RemoteLink®Mobile App(If Equipped)
Download the OnStar RemoteLinkmobile app to select Apple®iOS,Android™,BlackBerry®,or Windows®mobile devices.OnStar Subscribers can access thefollowing services from a mobiledevice:
.Remotely start/stop the vehicle,if factory-equipped.
.Lock/unlock doors, if equippedwith automatic locks.
.Activate the horn and lamps.
.Check the vehicle’sfuellevel,oillife, or tire pressure,if factory-equipped with the TirePressure Monitor System.
.Send directions to the vehicle.
.Locate the vehicle on a map(U.S. market only).
.Turn the vehicle's Wi-Fi hotspoton/off, manage settings, andmonitor data consumption,if equipped.
For OnStar RemoteLink informationand compatibility, seewww.onstar.com (U.S.) orwww.onstar.ca (Canada).
Remote Services
Contact an OnStar Advisor tounlock the doors or sound the hornand flash the lamps.