
Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
Vehicle Care 245
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
To access the fuses, press the clips
together, and lift the cover. To
reinstall the cover, push the cover
until it is secure.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Mini Fuses Usage
1 Antilock brake system valve
2 Sunroof
4* Rear fog lamp 5 Exterior rearview mirror/Power
window switch
6 Automatic occupant
sensing/ROS
7 Passive entry/ Passive start
8 Regulated voltage control
10 –/Intelligent battery
sensor
11 Rear window defogger
12 Electric steering column lock
13* –/SAI valve
14 Heated exterior rearview mirror

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
Vehicle Care 247
RelaysUsage
RLY 13 Air conditioning clutch
RLY 14 High-beam headlamps
RLY 15 Cooling fan K1
* = If equipped 1.4L Engine
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Mini Fuses Usage
1 Antilock brake system valve
2 Sunroof
4* Rear fog lamp 5 Exterior rearview mirror/Power
window switch
6 Automatic occupant
sensing/ROS
7 Passive entry/ Passive start
8 Regulated voltage control
9 Rear wiper
10 –/Intelligent battery
sensor
11 Rear window defogger
12 Electric steering column lock
14 Heated Exterior rearview mirror

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
250 Vehicle Care
FusesUsage
BCM1 Body control module 1
IPC Instrument panel cluster
TELEMATICS Telematics
PAS/SBSA Parking assist system/Side blind
spot alert system
RAIN SNSR Rain sensing wiper
AUDIO Audio
TRAILER1 Trailer 1 LDW/FCA Lane departure warning/Front
collision alert
CGM Central gateway module
HVAC1 Heating, ventilation, and air
conditioning 1
HLLD SW Automatic headlamp leveling
switch Fuses
Usage
IPC/AOS Instrument panel cluster/Automatic
occupant sensing
display
SPARE –
TRAILER2 Trailer hitch 2 CLOCK
SPRING Clock spring
HVAC2 Heating, ventilation, and air
conditioning 2
HTD
STR WHL Heated steering
wheel
SPARE –
S/ROOF SW Sunroof switch CIGAR APO Cigar auxiliary power outlet
ESCL Electric steering column lock
PWR WNDW FRONT Front power
windows
IRAP ACCY IRAP accessory
BATT CONN Battery connector Relays
Usage
RUN RELAY Run relay L/GATERELAY Liftgate relay
IRAP RELAY IRAP relay RAP/ACCY RELAY Retained
accessory power/
Accessory relay

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
296 Service and Maintenance
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
. Lubricate body components. See
Exterior Care 0283.
. Check starter switch. See Starter
Switch Check 0236.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check
0236.
. Check ignition transmission lock.
See Ignition Transmission Lock
Check 0237.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 237.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed. .
Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. If the hold
open is low, service the gas
strut. See Gas Strut(s) 0239.
. Inspect sunroof track and seal,
if equipped. See Sunroof051.

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
344 Index
Passenger Sensing System . . . . . 73
Perchlorate MaterialsRequirements, California . . . . . . 216
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 129
Phone Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . 158
Bluetooth . . . . . . . . . . . . . . . . 153, 154
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Outlets . . . . . . . . . . . . . . . . . . . . . . . 106
Protection, Battery . . . . . . . . . . . . 138
Reduced Engine Light . . . . . . . . 121
Retained Accessory (RAP) . . . 187
Seat Adjustment . . . . . . . . . . . . . . . . 56
Windows . . . . . . . . . . . . . . . . . . . . . . . 49
Power Steering Warning Lights . . . . . . . . . . . . . . . . . . . . . . . . . 117
Pregnancy, Using Seat Belts . . . . 65
Privacy Vehicle Data Recording . . . . . . . 323
Program
Courtesy Transportation . . . . . . 317 Proposition
65 Warning,
California . . . . . . . . . . . .215, 235, 277,
Back Cover
R
Radio Frequency Statement . . . . 321
Radio Reception . . . . . . . . . . . . . . . . 146
RadiosAM-FM Radio . . . . . . . . . . . . . . . . . 144
Satellite . . . . . . . . . . . . . . . . . . . . . . . 146
Reading Lamps . . . . . . . . . . . . . . . . . 136
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 59
Rear Vision Camera (RVC) . . . . . 203
Rear Window Washer/Wiper . . . . 105
Rearview Mirrors . . . . . . . . . . . . . . . . 49
Reclining Seatbacks . . . . . . . . . . . . . 57
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . 304
Records Maintenance . . . . . . . . . . . . . . . . . . 306
Recreational Vehicle Towing . . . . 280
Reduced Engine Power Light . . . 121
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 315
Remote Keyless Entry
(RKE) System . . . . . . . . . . 28, 29, 31
Remote Vehicle Start . . . . . . . . . . . . 37 Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 79
Maintenance . . . . . . . . . . . . . . . . . . 305
Replacing Airbag System . . . . . . . . 79
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . 93
Replacing Seat Belt System
Parts after a Crash . . . . . . . . . . . . . 67
Reporting Safety Defects Canadian Government . . . . . . . . 322
General Motors . . . . . . . . . . . . . . . 322
U.S. Government . . . . . . . . . . . . . 321
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 85
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . 187
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 174
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 315
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 51
Rotation, Tires . . . . . . . . . . . . . . . . . . 264
Routing, Engine Drive Belt . . . . . . 310
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 191

Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-11373973) -
2018 - crc - 10/9/17
346 Index
StrutsGas . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 176
Summer Tires . . . . . . . . . . . . . . . . . . 252
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 51
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 205
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 110
TaillampsBulb Replacement . . . . . . . . . . . . 242
Text Telephone (TTY) Users . . . . 314
Theft-Deterrent Systems . . . . . . . . . 46 Immobilizer . . . . . . . . . . . . . . . . . . . . . 45
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 All-Season . . . . . . . . . . . . . . . . . . . . 251
Buying New Tires . . . . . . . . . . . . . 265
Chains . . . . . . . . . . . . . . . . . . . . . . . . 270
Changing . . . . . . . . . . . . . . . . . . . . . 272
Compact Spare . . . . . . . . . . . . . . . 276
Designations . . . . . . . . . . . . . . . . . 255
Different Size . . . . . . . . . . . . . . . . . 267
If a Tire Goes Flat . . . . . . . . . . . . 270 Tires (cont'd)
Inspection . . . . . . . . . . . . . . . . . . . . 263
Pressure . . . . . . . . . . . . . . . . . . . . . . 258
Pressure Light . . . . . . . . . . . . . . . . .119
Pressure Monitor Operation . . 260
Pressure Monitor System . . . . . 259
Rotation . . . . . . . . . . . . . . . . . . . . . . 264
Sidewall Labeling . . . . . . . . . . . . . 253
Terminology and Definitions . . 256
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 267
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 269
Wheel Replacement . . . . . . . . . . 269
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 265
Winter . . . . . . . . . . . . . . . . . . . . . . . . 252
Towing
General Information . . . . . . . . . . 212
Recreational Vehicle . . . . . . . . . . 280
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 280
Traction Control System (TCS)/
StabiliTrak Light . . . . . . . . . . . . . .119
Off Light . . . . . . . . . . . . . . . . . . . . . . .118
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 198 Trademarks and License
Agreements . . . . . . . . . . . . . . . . . . . 163
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 191
Fluid, Automatic . . . . . . . . . . . . . . 225
Fluid, Manual . . . . . . . . . . . . . . . . . 226
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 317
Trip Odometer . . . . . . . . . . . . . . . . . . 110
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 135
Turn Signal Bulb Replacement . . . . . . . . . . . . 242
U
Ultrasonic Parking SensorLight . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Uniform Tire Quality Grading . . . 267
Up-Shift Light . . . . . . . . . . . . . . . . . . . 117
USB Port . . . . . . . . . . . . . . . . . . . . . . . 147
Using the System . . . . . . . . . . . . . . . 142
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 44
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 172