
Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Driving and Operating 183
Caution
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.
1(ACC/ACCESSORY):This is theposition in which things like theradio and the windshield wipers canbe operated when the engine is off.
2(ON/RUN):This position can beused to operate the electricalaccessories and to display someinstrument cluster warning andindicator lights. This position canalso be used for service anddiagnostics, and to verify the properoperation of the malfunctionindicator lamp as may be requiredfor emission inspection purposes.The switch stays in this positionwhen the engine is running.
If you leave the key in the ACC/ACCESSORY or ON/RUN positionwith the engine off, the battery couldbe drained. You may not be able tostart the vehicle if the battery isallowed to drain for an extendedperiod of time.
3(START):This is the position thatstarts the engine. When the enginestarts, release the key. The ignitionswitch returns to ON/RUN fordriving.
Awarningtonewillsoundwhenthedriver door is opened, the ignition isin ACC/ACCESSORY or LOCK/OFF, and the key is in the ignition.If the ignition becomes difficult toturn, seeKeys026.
Ignition Positions
(Keyless Access)
The vehicle may be equipped withan electronic keyless ignition withpushbutton start.
Pressing the button cycles it throughthree modes: ACC/ACCESSORY,ON/RUN/START, and Stopping theEngine/OFF.
The transmitter must be in thevehicle for the system to operate.If the pushbutton start is notworking, the vehicle may be near astrong radio antenna signal causinginterference to the Keyless Access

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
184 Driving and Operating
system. SeeRemote Keyless Entry(RKE) System Operation (KeylessAccess)031orRemote KeylessEntry (RKE) System Operation (KeyAccess)029.
To s h i f t o u t o f P ( P a r k ) , t h e v e h i c l emust be in ACC/ACCESSORY orON/RUN and the brake pedal mustbe applied.
Stopping the Engine/OFF (NoIndicator Lights) :When thevehicle is stopped, press ENGINESTART/STOP once to turn theengine off.
If the vehicle is in P (Park), theignition will turn off, and RetainedAccessory Power (RAP) will remainactive. SeeRetained AccessoryPower (RAP)0187.
If the vehicle is not in P (Park), theignition will return to ACC/ACCESSORY and the DriverInformation Center (DIC) will displaythe message SHIFT TO PARK. SeeVehicle Messages0126.Whenthevehicle is shifted into P (Park), theignition system will switch to OFF.
Do not turn the engine off when thevehicle is moving. This will cause aloss of power assist in the brakeand steering systems and disablethe airbags.
If the vehicle must be shut off in anemergency:
1. Brake using a firm and steadypressure. Do not pump thebrakes repeatedly. This maydeplete power assist, requiringincreased brake pedal force.
2. Shift the vehicle to N (Neutral).This can be done while thevehicle is moving. After shiftingto N (Neutral), firmly apply thebrakes and steer the vehicle toasafelocation.
3. Come to a complete stop. Shiftto P (Park) with an automatictransmission, or Neutral with amanual transmission. Turn theignition to LOCK/OFF.
4. Set the parking brake. SeeParking Brake0196.
{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,press and hold ENGINE START/STOP for longer than two seconds,or press twice in five seconds.
ACC/ACCESSORY (AmberIndicator Light) :This mode allowsyou to use some electricalaccessories when the engine is off.
With the ignition off, pressing thebutton one time without the brakepedal applied will place the ignitionsystem in ACC/ACCESSORY.
The ignition will switch from ACC/ACCESSORY to OFF afterfive minutes to prevent batteryrundown.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Driving and Operating 185
ON/RUN/START (Green IndicatorLight) :This mode is for driving andstarting. With the ignition off and thebrake pedal applied, pressingENGINE START/STOP once willplace the ignition system in ON/RUN/START. Once engine crankingbegins, release the button. Enginecranking will continue until theengine starts. SeeStarting theEngine0185.Theignitionwillthenremain in ON/RUN.
Service Only Mode
This power mode is available forservice and diagnostics, and toverify the proper operation of themalfunction indicator lamp as maybe required for emission inspectionpurposes. With the vehicle off, andthe brake pedal not applied,pressing and holding ENGINESTART/STOP for more thanfive seconds will place the vehicle inService Only Mode. The instrumentsand audio systems will operate asthey do in ON/RUN, but the vehiclewill not be able to be driven. Theengine will not start in Service OnlyMode. Press ENGINE START/STOPagain to turn the vehicle off.
Starting the Engine
Automatic Transmission
Move the shift lever to P (Park) orN(Neutral). To restart the enginewhen the vehicle is already moving,use N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you
could damage the transmission.
Shift to P (Park) only when the
vehicle is stopped.
Caution
If you add electrical parts or
accessories, you could change
the way the engine operates. Any
resulting damage would not be
covered by the vehicle warranty.
SeeAdd-On Electrical
Equipment0211.
Manual Transmission
The shift lever should be in Neutraland the parking brake engaged.Hold the clutch pedal to the floorand start the engine.
Starting Procedure
1. With your foot off theaccelerator pedal, turn theignition to START. When theengine cranks, let go of thekey. The idle speed will godown as the engine gets warm.
Caution
Holding the key in START for
longer than 15 seconds at a time
will cause the battery to be
drained much sooner. And the
excessive heat can damage the
starter motor. Wait about
15 seconds between each try to
help avoid draining the battery or
damaging the starter.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
186 Driving and Operating
2. If the engine does not start,wait about 15 seconds and tryagain. Wait about 15 secondsbetween each try.
When the engine has run about10 seconds to warm up, thevehicle is ready to be driven.Do not run the engine at highspeed when it is cold.
If the weather is below freezing(0 °C or 32 °F), let the enginerun for a few minutes towarm up.
3. If the engine still will not start,or starts but then stops, it couldbe flooded with too muchgasoline. Try pushing theaccelerator pedal all the way tothe floor and holding it there asyou hold the key in START forabout three seconds. If thevehicle starts briefly but thenstops again, do the same thing,but this time keep the pedaldown for five or six seconds.This clears the extra gasolinefrom the engine.
Engine Heater
The engine heater can provideeasier starting and better fueleconomy during engine warm-up incold weather conditions at or below✓18 °C (0 °F). Vehicles with anengine heater should be plugged inat least four hours before starting.
1. Turn off the engine.
2. Open the hood and unwrap theelectrical cord. The cord islocated in the driver side of theengine compartment, near thebattery. It is shipped from thefactory with a tie holding it in
place. Use care in removingthe tie so that the cord is notdamaged.
Check the heater cord fordamage. If it is damaged, donot use it. See your dealer forareplacement.Inspectthecord for damage yearly.
3. Plug it into a normal, grounded11 0 - v o l t A C o u t l e t .
{Warning
Improper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
.Plug the cord into athree-prong electrical utilityreceptacle that is protectedby a ground fault detectionfunction. An ungroundedoutlet could cause anelectric shock.
.Use a weatherproof,heavy-duty, 15 amp-ratedextension cord if needed.
(Continued)

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
188 Driving and Operating
Leaving the Vehicle with the
Engine Running (Automatic
Transmission)
{Warning
It can be dangerous to leave the
vehicle with the engine running.
It could overheat and catch fire.
It is 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.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, 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,
always set the parking brake and
move the shift lever to P (Park).
SeeShifting Into Park (Automatic
Tr a n s m i s s i o n )0187.
If you have to leave the vehicle withthe engine running, be sure thevehicle is in P (Park) and the
parking brake is firmly set beforeyou leave it. After you have movedthe shift lever into P (Park), hold thebrake pedal down. Then see if youcan move the shift lever away fromP(Park) without first pushing thebutton on the shift lever. If you can,it means that the shift lever was notfully locked into P (Park).
Torque Lock (Automatic
Transmission)
If you are parking on a hill and youdo not shift the transmission intoP(Park) properly, the weight of thevehicle may put too much force onthe parking pawl in thetransmission. You may find it difficultto pull the shift lever out of P (Park).This is called“torque lock.”To p r e v e n t t o r q u e l o c k , s e t t h eparking brake and then shift intoP(Park) properly before you leavethe driver seat. To find out how, see“Shifting Into Park”previously in thissection.
When you are ready to drive, movethe shift lever out of P (Park) beforeyou release the parking brake.
If torque lock does occur, you mayneed to have another vehicle pushyours a little uphill to take some ofthe pressure from the parking pawlin the transmission, so you can pullthe shift lever out of P (Park).
Shifting out of Park
(Automatic Transmission)
This vehicle is equipped with a shiftlock control. The shift lock control isdesigned to:
.Prevent ignition key removalunless the shift lever is inP(Park) with the shift leverbutton fully released.
.Prevent movement of the shiftlever out of P (Park) unless theignition is in ON/RUN and thebrake pedal is applied.
The shift lock control is alwaysfunctional except in the case of anuncharged or low voltage (less than9-volt) battery.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Driving and Operating 189
If the vehicle has an unchargedbattery or a battery with low voltage,try charging or jump starting thebattery. SeeJump Starting - NorthAmerica0275.
To s h i f t o u t o f P ( P a r k ) :
1. Apply the brake pedal.
2. Turn the ignition to ON/RUN.
3. Press the shift lever button.
4. Move the shift lever to thedesired position.
If still unable to shift out of P (Park):
1. Fully release the shift leverbutton.
2. Hold the brake pedal down andpress the shift lever buttonagain.
3. Move the shift lever to thedesired position.
If you still cannot move the shiftlever from P (Park), consult yourdealer or a professional towingservice.
The doors may lock when shiftingfrom P (Park). SeeAutomatic DoorLocks040.
Parking
If the vehicle has a manualtransmission, before getting out ofthe vehicle, move the shift lever intoR(Reverse) if parking on a downhillslope. On a level surface or anuphill slope, use 1 (First) gear.Firmly apply the parking brake. Turnthe wheels toward the curb for adownhill slope, or away from thecurb for an uphill slope. Once theshift lever has been placed into gearwith the clutch pedal pressed in,turn the ignition key to LOCK/OFF,remove the key, and release theclutch.
Parking over Things
That Burn
{Warning
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn.
Extended Parking
It is better not to park with thevehicle running. If the vehicle is leftwhile running, follow the propersteps to be sure the vehicle will notmove and there is adequateventilation. SeeShifting Into Park(Automatic Transmission)0187andEngine Exhaust0190.
If the vehicle is left in P (Park) whilerunning and the Remote KeylessEntry (RKE) transmitter is outsidethe vehicle, the vehicle will turn offafter one hour.
If the vehicle is left in P (Park) whilerunning and the RKE transmitter isinside, the vehicle will run for twohours. At the end of the secondhour, the vehicle will turn off.
The timer will reset if the vehicle istaken out of P (Park) while it isrunning.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Driving and Operating 211
Trailer Towing
General Towing
Information
The vehicle is neither designed norintended to tow a trailer.
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction Indicator
Lamp (Check Engine Light)011 2.
AdeviceconnectedtotheDLC—
such as an aftermarket fleet or
driver-behavior tracking device—
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle’s
systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and
would not be covered by the
vehicle warranty. Always check
with your dealer before adding
electrical equipment.
Add-on equipment can drain thevehicle's 12-volt battery, even if thevehicle is not operating.
The vehicle has an airbag system.Before attempting to add anythingelectrical to the vehicle, seeServicing the Airbag-EquippedVehicle075andAdding Equipmentto the Airbag-EquippedVehicle075.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
212 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 213California Proposition65 Warning . . . . . . . . . . . . . . . . . 213California PerchlorateMaterials Requirements . . . . . 213Accessories andModifications . . . . . . . . . . . . . . . . 214
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 214Hood . . . . . . . . . . . . . . . . . . . . . . . . . 215Engine CompartmentOverview . . . . . . . . . . . . . . . . . . . . 217Engine Oil . . . . . . . . . . . . . . . . . . . . 220Engine Oil Life System . . . . . . . 222Automatic TransmissionFluid . . . . . . . . . . . . . . . . . . . . . . . . 223Manual Transmission Fluid . . . 224Hydraulic Clutch . . . . . . . . . . . . . . 224Engine Air Cleaner/Filter . . . . . . 224Cooling System . . . . . . . . . . . . . . 226Engine Coolant . . . . . . . . . . . . . . . 227Engine Overheating . . . . . . . . . . 230Washer Fluid . . . . . . . . . . . . . . . . . 231Brakes . . . . . . . . . . . . . . . . . . . . . . . 232Brake Fluid . . . . . . . . . . . . . . . . . . . 233
Battery - North America . . . . . . 234Starter Switch Check . . . . . . . . . 234Automatic Transmission ShiftLock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 235Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 235Park Brake and P (Park)Mechanism Check . . . . . . . . . . 236Wiper Blade Replacement . . . . 236
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 237
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 238Halogen Bulbs . . . . . . . . . . . . . . . . 238Headlamps and Front TurnSignal . . . . . . . . . . . . . . . . . . . . . . . 238Fog Lamps . . . . . . . . . . . . . . . . . . . 239Ta i l l a m p s , T u r n S i g n a l ,Stoplamps, and Back-UpLamps . . . . . . . . . . . . . . . . . . . . . . 240License Plate Lamp . . . . . . . . . . 241Replacement Bulbs . . . . . . . . . . . 241
Electrical System
Electrical System Overload . . . 242Fuses and Circuit Breakers . . . 242Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 243
Instrument Panel FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 246
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 248All-Season Tires . . . . . . . . . . . . . . 249Winter Tires . . . . . . . . . . . . . . . . . . 249Summer Tires . . . . . . . . . . . . . . . . 250Tire Sidewall Labeling . . . . . . . . 250Tire Designations . . . . . . . . . . . . . 252Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 253Tire Pressure . . . . . . . . . . . . . . . . . 256Tire Pressure MonitorSystem . . . . . . . . . . . . . . . . . . . . . . 257Tire Pressure MonitorOperation . . . . . . . . . . . . . . . . . . . 258Tire Inspection . . . . . . . . . . . . . . . . 260Tire Rotation . . . . . . . . . . . . . . . . . 261When It Is Time for NewTires . . . . . . . . . . . . . . . . . . . . . . . . 262Buying New Tires . . . . . . . . . . . . . 263Different Size Tires andWheels . . . . . . . . . . . . . . . . . . . . . . 264Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 264Wheel Alignment and TireBalance . . . . . . . . . . . . . . . . . . . . . 266Wheel Replacement . . . . . . . . . . 266Tire Chains . . . . . . . . . . . . . . . . . . . 267If a Tire Goes Flat . . . . . . . . . . . . 267