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Vehicle Care 239
8. Install the headlamp bulbaccess cover.
9. For the driver side bulb,replace the windshield washerbottle filler neck by turning itone-quarter turn clockwise intothe bottle.
Turn Signal Lamp
1. Open the hood. SeeHood0215.
2. Remove the turn signal lampbulb socket from the headlampassembly by turningcounterclockwise.
3. Remove the bulb from the bulbsocket by pulling it straight out.
4. Install the new bulb in the bulbsocket.
5. Install the bulb socket into theheadlamp assembly by turningclockwise.
Fog Lamps
1. Tilt the wheel to access thewheel liner.
2. Remove the two push pinsfrom the outside of the wheelliner.
3. Disconnect the electricalconnector from the bulb holder.
4. Remove and pull the bulbassembly straight out ofthe lamp.
5. Install a new bulb into the bulbholder.
6. Reinstall the bulb assemblyinto the lamp.
7. Reconnect the electricalconnector to the bulbassembly.
8. Reinstall the wheel liner withthe two push pins.

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Vehicle Care 243
Engine Compartment
Fuse Block
1.8L Engines
The engine compartment fuse blockis on the driver side of the vehicle,near the battery.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
To a c c e s s t h e f u s e s , p r e s s t h e c l i p stogether, and lift the cover. Toreinstall the cover, push the coveruntil it is secure.
The vehicle may not be equippedwith all of the fuses, relays, andfeatures shown.
Mini Fuses Usage
1ABSvalve
2Sunroof
4* Rear fog lamp
5OSRVM/Powerwindow switch
6Automaticoccupantsensing/ROS
7Passiveentry/Passive start
8RVC
10–/IBS
11 R e a r w i n d o wdefogger
12 ESCL
13*–/SAI valve
14 OSRVM HTD
15 Front heated seats
16 Fuel system controlmodule 1

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246 Vehicle Care
Mini Fuses Usage
36 Right high-beamheadlamp
*=Ifequipped
J-CaseFusesUsage
1Frontwipers
2ABSpump
3Blower
4Run/CrankIEC
5Powerseat
6CoolingfanK4
7CoolingfanK5
9EVP
10 Start
*=Ifequipped
Relays Usage
RLY 1 Front wiper control
RLY 2* Rear fog lamp
RLY 3 Front wiper speed
RLY 4 Rear defogger
Relays Usage
RLY 5 Run/Crank
RLY 9 Cooling fan K2
RLY 10 Cooling fan K3
RLY 11 P/T
RLY 12 Start
RLY 13 A/C clutch
RLY 14 High-beamheadlamps
RLY 15 Cooling fan K1
*=Ifequipped
Instrument Panel Fuse
Block
The instrument panel fuse block ison the underside of the driver sideinstrument panel.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-10122660) -2017 - crc - 5/13/16
252 Vehicle Care
Compact Spare Tire Example
(1) Tire Ply Material:The type
of cord and number of plies in
the sidewall and under the tread.
(2) Temporary Use Only:The
compact spare tire or temporary
use tire should not be driven at
speeds over 80 km/h (50 mph).
The compact spare tire is for
emergency use when a regular
road tire has lost air and gone
flat. If the vehicle has a compact
spare tire, seeCompact Spare
Tire0274andIf a Tire Goes
Flat0267.
(3) Tire Identification Number
(TIN):The letters and numbers
following the DOT (Department
of Transportation) code are the
Tire Identification Number (TIN).
The TIN shows the
manufacturer and plant code,
tire size, and date the tire was
manufactured. The TIN is
molded onto both sides of the
tire, although only one side may
have the date of manufacture.
(4) Maximum Cold Inflation
Load Limit:Maximum load that
can be carried and the
maximum pressure needed to
support that load.
(5) Tire Inflation:The
temporary use tire or compact
spare tire should be inflated to
420 kPa (60 psi). For more
information on tire pressure and
inflation seeTire
Pressure0256.
(6) Tire Size:Acombinationof
letters and numbers define a
tire's width, height, aspect ratio,
construction type, and service
description. The letter T as the
first character in the tire size
means the tire is for temporary
use only.
(7) TPC Spec (Tire
Performance Criteria
Specification):Original
equipment tires designed to
GM's specific tire performance
criteria have a TPC specification
code molded onto the sidewall.
GM's TPC specifications meet or
exceed all federal safety
guidelines.
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle
tire size.

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

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Vehicle Care 257
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.
Recheck the tire pressure with
the tire gauge.
Put the valve caps back on the
valve stems to keep out dirt and
moisture and prevent leaks. Use
only valve caps designed for the
vehicle by GM. TPMS sensors
could be damaged and would
not be covered by the vehicle
warranty.
Tire Pressure Monitor
System
The Tire Pressure Monitor System(TPMS) uses radio and sensortechnology to check tire pressurelevels. The TPMS sensors monitorthe air pressure in your tires andtransmit tire pressure readings to areceiver located in the vehicle.
Each tire, including the spare (ifprovided), should be checkedmonthly when cold and inflated tothe inflation pressure recommendedby the vehicle manufacturer on thevehicle placard or tire inflationpressure label. (If your vehicle hastires of a different size than the sizeindicated on the vehicle placard ortire inflation pressure label, youshould determine the proper tireinflation pressure for those tires.)
As an added safety feature, yourvehicle has been equipped with atire pressure monitoring system(TPMS) that illuminates a low tirepressure telltale when one or moreof your tires is significantlyunder-inflated.
Accordingly, when the low tirepressure telltale illuminates, youshould stop and check your tires assoon as possible, and inflate themto the proper pressure. Driving on asignificantly under-inflated tirecauses the tire to overheat and canlead to tire failure. Under-inflationalso reduces fuel efficiency and tire
tread life, and may affect thevehicle's handling and stoppingability.
Please note that the TPMS is not asubstitute for proper tiremaintenance, and it is the driver'sresponsibility to maintain correct tirepressure, even if under-inflation hasnot reached the level to triggerillumination of the TPMS low tirepressure telltale.
Yo u r v e h i c l e h a s a l s o b e e nequipped with a TPMS malfunctionindicator to indicate when thesystem is not operating properly.The TPMS malfunction indicator iscombined with the low tire pressuretelltale. When the system detects amalfunction, the telltale will flash forapproximately one minute and thenremain continuously illuminated.This sequence will continue uponsubsequent vehicle start-ups aslong as the malfunction exists.
When the malfunction indicator isilluminated, the system may not beable to detect or signal low tirepressure as intended. TPMSmalfunctions may occur for a variety

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258 Vehicle Care
of reasons, including the installationof replacement or alternate tires orwheels on the vehicle that preventthe TPMS from functioning properly.Always check the TPMS malfunctiontelltale after replacing one or moretires or wheels on your vehicle toensure that the replacement oralternate tires and wheels allow theTPMS to continue to functionproperly.
SeeTire Pressure MonitorOperation0258.
SeeRadio FrequencyStatement0317.
Tire Pressure Monitor
Operation
This vehicle may have a TirePressure Monitor System (TPMS).The TPMS is designed to warn thedriver when a low tire pressurecondition exists. TPMS sensors aremounted onto each tire and wheelassembly, excluding the spare tireand wheel assembly. The TPMSsensors monitor the air pressure in
the tires and transmit the tirepressure readings to a receiverlocated in the vehicle.
When a low tire pressure conditionis detected, the TPMS illuminatesthe low tire pressure warning lightlocated on the instrument cluster.If the warning light comes on, stopas soon as possible and inflate thetires to the recommended pressureshown on the Tire and LoadingInformation label. SeeVehicle LoadLimits0178.
The low tire pressure warning lightcomes on at each ignition cycle untilthe tires are inflated to the correctinflation pressure.
The low tire pressure warning lightmay come on in cool weather whenthe vehicle is first started, and thenturn off as the vehicle is driven. This
could be an early indicator that theair pressure is getting low and mustbe inflated to the proper pressure.
ATire and Loading Information labelshows the size of the originalequipment tires and the correctinflation pressure for the tires whenthey are cold. SeeVehicle LoadLimits0178,foranexampleoftheTire and Loading Information labeland its location. Also seeTirePressure0256.
The TPMS can warn about a lowtire pressure condition but it doesnot replace normal tiremaintenance. SeeTire Inspection0260,Tire Rotation0261andTires0248.
Caution
Tire sealant materials are not all
the same. A non-approved tire
sealant could damage the TPMS
sensors. TPMS sensor damage
caused by using an incorrect tire
sealant is not covered by the
vehicle warranty. Always use only
(Continued)

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Vehicle Care 259
Caution (Continued)
the GM approved tire sealant
available through your dealer or
included in the vehicle.
TPMS Malfunction Light
The TPMS will not function properlyif one or more of the TPMS sensorsare missing or inoperable. When thesystem detects a malfunction, thelow tire warning light flashes forabout one minute and then stays onfor the remainder of the ignitioncycle. The malfunction light comeson at each ignition cycle until theproblem is corrected. Some of theconditions that can cause this tocome on are:
.One of the road tires has beenreplaced with the spare tire. Thespare tire does not have aTPMS sensor. The malfunctionlight should go off after the roadtire is replaced and the sensormatching process is performed
successfully. See "TPMS SensorMatching Process" later in thissection.
.The TPMS sensor matchingprocess was not done or notcompleted successfully afterrotating the tires. Themalfunction light should go offafter successfully completing thesensor matching process. See"TPMS Sensor MatchingProcess" later in this section.
.One or more TPMS sensors aremissing or damaged. Themalfunction light should go offwhen the TPMS sensors areinstalled and the sensormatching process is performedsuccessfully. See your dealer forservice.
.Replacement tires or wheels donot match the original equipmenttires or wheels. Tires and wheelsother than those recommendedcould prevent the TPMS fromfunctioning properly. SeeBuyingNew Tires0263.
.Operating electronic devices orbeing near facilities using radiowave frequencies similar to theTPMS could cause the TPMSsensors to malfunction.
If the TPMS is not functioningproperly, it cannot detect or signal alow tire condition. See your dealerfor service if the TPMS malfunctionlight comes on and stays on.
TPMS Sensor Matching
Process
Each TPMS sensor has a uniqueidentification code. The identificationcode needs to be matched to a newtire/wheel position after rotating thetires or replacing one or more of theTPMS sensors. The TPMS sensormatching process should also beperformed after replacing a sparetire with a road tire containing theTPMS sensor. The malfunction lightshould go off at the next ignitioncycle. The sensors are matched tothe tire/wheel positions, using aTPMS relearn tool, in the followingorder: driver side front tire,passenger side front tire, passengerside rear tire, and driver side rear.