engine cooling CHEVROLET SONIC 2017 2.G Owners Manual

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Lighting 139
If equipped with Keyless Access,the exterior lamps automatically turnon when a door is opened after theignition is changed to the OFFposition. The dome lamps alsocome on after the ignition ischanged to the OFF position. SeeIgnition Positions (Key Access)0182orIgnition Positions (KeylessAccess)0183.
The exterior lamps turn offimmediately by turning the exteriorlamps control off.
This feature can be changed. SeeVehicle Personalization0127.
Battery Load
Management
The vehicle has Electric PowerManagement (EPM) that estimatesthe battery's temperature and stateof charge. It then adjusts the voltagefor best performance and extendedlife of the battery.
When the battery's state of chargeis low, the voltage is raised slightlyto quickly bring the charge back up.When the state of charge is high,
the voltage is lowered slightly toprevent overcharging. If the vehiclehas a voltmeter gauge or a voltagedisplay on the Driver InformationCenter (DIC), you may see thevoltage move up or down. This isnormal. If there is a problem, analert will be displayed.
The battery can be discharged atidle if the electrical loads are veryhigh. This is true for all vehicles.This is because the generator(alternator) may not be spinning fastenough at idle to produce all thepower needed for very highelectrical loads.
Ahighelectricalloadoccurswhenseveral of the following are on, suchas: headlamps, high beams, foglamps, rear window defogger,climate control fan at high speed,heated seats, engine cooling fans,trailer loads, and loads plugged intoaccessory power outlets.
EPM works to prevent excessivedischarge of the battery. It does thisby balancing the generator's outputand the vehicle's electrical needs.It can increase engine idle speed to
generate more power, wheneverneeded. It can temporarily reducethe power demands of someaccessories.
Normally, these actions occur insteps or levels, without beingnoticeable. In rare cases at thehighest levels of corrective action,this action may be noticeable to thedriver.
Battery Power Protection
The battery saver feature isdesigned to protect the vehicle'sbattery.
If some interior lamps are left onand the ignition is turned off, thebattery rundown protection systemautomatically turns the lamp off aftersome time.
Exterior Lighting Battery
Saver
The exterior lamps turn off about10 minutes after the ignition isturned off, if the parking lamps orheadlamps have been manually lefton. This protects against draining

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
176 Driving and Operating
Hill and Mountain Roads
Driving on steep hills or throughmountains is different than drivingon flat or rolling terrain. Tips include:
.Keep the vehicle serviced and ingood shape.
.Check all fluid levels and brakes,tires, cooling system, andtransmission.
.Shift to a lower gear when goingdown steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering. Always have the
engine running and the vehicle
in gear.
.Drive at speeds that keep thevehicle in its own lane. Do notswing wide or cross thecenter line.
.Be alert on top of hills;something could be in your lane(e.g., stalled car, accident).
.Pay attention to special roadsigns (e.g., falling rocks area,winding roads, long grades,passing or no-passing zones)and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires andthe road creates less traction orgrip, so drive carefully. Wet ice canoccur at about 0 °C (32 °F) whenfreezing rain begins to fall. Avoiddriving on wet ice or in freezing rainuntil roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Acceleratingtoo quickly causes the wheels tospin and makes the surfaceunder the tires slick.
.Turn on Traction Control. SeeTr a c t i o n C o n t r o l / E l e c t r o n i cStability Control0197.
.The Antilock Brake System(ABS) improves vehicle stabilityduring hard stops, but thebrakes should be applied soonerthan when on dry pavement.SeeAntilock Brake System(ABS)0195.
.Allow greater following distanceand watch for slippery spots. Icypatches can occur on otherwise

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

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
218 Vehicle Care
1.Engine Air Cleaner/Filter0224.
2. Engine Oil Dipstick. SeeEngine Oil0220.
3. Engine Cooling Fan (Out ofView). SeeCoolingSystem0226.
4. Engine Oil Fill Cap. SeeEngine Oil0220.
5. Engine Coolant Surge Tankand Pressure Cap. SeeCooling System0226.
6. Brake/Clutch Fluid Reservoir.SeeBrake Fluid0233andHydraulic Clutch0224.
7.Battery - North America0234.
8. Windshield Washer FluidReservoir. SeeWasherFluid0231.
9.Engine Compartment FuseBlock0243.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
220 Vehicle Care
1.Engine Air Cleaner/Filter0224.
2. Engine Oil Dipstick. SeeEngine Oil0220.
3. Engine Cooling Fan (Out ofView). SeeCoolingSystem0226.
4. Engine Oil Fill Cap. SeeEngine Oil0220.
5. Engine Coolant Surge Tankand Pressure Cap. SeeCooling System0226.
6. Brake/Clutch Fluid Reservoir.SeeBrake Fluid0233andHydraulic Clutch0224.
7.Battery - North America0234.
8.Engine Compartment FuseBlock0243.
9. Windshield Washer FluidReservoir. SeeWasherFluid0231.
Engine Oil
To e n s u r e p r o p e r e n g i n eperformance and long life, carefulattention must be paid to engine oil.
Following these simple, butimportant steps will help protectyour investment:
.Use engine oil approved to theproper specification and of theproper viscosity grade. See“Selecting the Right Engine Oil”in this section.
.Check the engine oil levelregularly and maintain theproper oil level. See“CheckingEngine Oil”and“When to AddEngine Oil”in this section.
.Change the engine oil at theappropriate time. SeeEngine OilLife System0222.
.Always dispose of engine oilproperly. See“What to Do withUsed Oil”in this section.
If the engine oil pressure lightcomes on, check the engine oil levelright away. The oil pressure light ison the instrument cluster. SeeEngine Oil Pressure Light011 8.Check the engine oil level regularly;this is an added reminder.
Checking Engine Oil
Check the engine oil level regularly(every 650 km (400 mi), especiallyprior to a long trip. The engine oildipstick handle is a loop. SeeEngine Compartment Overview0217for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center(DIC) message displays, check theoil level.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
226 Vehicle Care
Cooling System
The cooling system allows theengine to maintain the correctworking temperature.
1.4L L4 Engine
1. Engine Cooling Fan (Outof View)
2. Engine Coolant Surge Tankand Pressure Cap
1.8L L4 Engine
1. Engine Cooling Fan (Outof View)
2. Engine Coolant Surge Tankand Pressure Cap
{Warning
An electric engine cooling fan
under the hood can start up even
when the engine is not running
and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.
Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Vehicle Care 227
Engine Coolant
The cooling system in the vehicle isfilled with DEX-COOL enginecoolant. This coolant is designed toremain in the vehicle for 5 years or240 000 km (150,000 mi), whicheveroccurs first.
The following explains the coolingsystem and how to check and addcoolant when it is low. If there is aproblem with engine overheating,seeEngine Overheating0230.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
(Continued)
Warning (Continued)
overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of cleandrinkable water and DEX-COOLcoolant. This mixture:
.Gives freezing protection downto✓37 °C (✓34 °F), outsidetemperature.
.Gives boiling protection up to129 °C (265 °F), enginetemperature.
.Protects against rust andcorrosion.
.Will not damage aluminum parts.
.Helps keep the proper enginetemperature.
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants0300.
Never dispose of engine coolant byputting it in the trash, pouring it onthe ground, or into sewers, streams,or bodies of water. Have the coolantchanged by an authorized servicecenter, familiar with legalrequirements regarding usedcoolant disposal. This will helpprotect the environment and yourhealth.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
228 Vehicle Care
Checking Coolant
The vehicle must be on a levelsurface when checking the coolantlevel.
It is normal to see coolant moving inthe upper coolant hose return linewhen the engine is running.
Check to see if coolant is visible inthe coolant surge tank. If the coolantinside the coolant surge tank isboiling, do not do anything else untilit cools down.
If coolant is visible but the coolantlevel is not at or above the markpointed to, add a 50/50 mixture ofclean drinkable water andDEX-COOL coolant.
Be sure the cooling system is coolbefore this is done.
If no coolant is visible in the coolantsurge tank, add coolant as follows:
How to Add Coolant to the
Coolant Surge Tank
Caution
This vehicle has a specific
coolant fill procedure. Failure to
follow this procedure could cause
the engine to overheat and be
severely damaged.
If no problem is found, check to seeif coolant is visible in the coolantsurge tank. If coolant is visible butthe coolant level is not at theindicated level mark, add a 50/50 mixture of clean, drinkable waterand DEX-COOL coolant at thecoolant surge tank, but be sure thecooling system, including thecoolant surge tank pressure cap, iscool before you do it.
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn
(Continued)
Warning (Continued)
the cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure
cap to cool.
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
Vehicle Care 229
Caution
In cold weather, water can freeze
and crack the engine, radiator,
heater core, and other parts. Use
the recommended coolant and
the proper coolant mixture.
{Warning
Yo u c a n b e b u r n e d i f y o u s p i l l
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
1.4L Engine Shown, 1.8L Engine
Similar
1. Remove the coolant surge tankpressure cap when the coolingsystem, including the coolantsurge tank pressure cap andupper radiator hose, is nolonger hot.
Turn the pressure cap slowlycounterclockwise aboutone-quarter of a turn. If youhear a hiss, wait for that tostop. This will allow anypressure still left to be ventedout the discharge hose.
2. Keep turning the pressure capslowly and remove it.
3. Fill the coolant surge tank withthe proper DEX-COOL coolantmixture to the indicatedlevel mark.
4. With the coolant surge tankpressure cap off, start theengine and let it run until youcan feel the upper radiatorhose getting hot. Watch out forthe engine cooling fan.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
230 Vehicle Care
By this time, the coolant levelinside the coolant surge tankmay be lower. If the level islower, add more of the properDEX-COOL coolant mixture tothe coolant surge tank until thelevel reaches the indicatedlevel mark.
5. Replace the pressure captightly.
Check the level in the coolant surgetank when the cooling system hascooled down. If the coolant is not atthe proper level, repeat Steps 1–3andreinstallthepressurecap.If the coolant still is not at the properlevel when the system cools downagain, see your dealer.
Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
The vehicle has an indicator to warnof the engine overheating.
If the decision is made not to lift thehood when this warning appears,get service help right away. SeeRoadside AssistanceProgram0311.
If the decision is made to lift thehood, make sure the vehicle isparked on a level surface.
Then check to see if the enginecooling fan is running. If the engineis overheating, the fan should berunning. If it is not, do not continueto run the engine. Have the vehicleserviced.
Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning isdisplayed but no steam can be seenor heard, the problem may not be