Chevrolet Sonic Fuse Box: What Each Fuse Does
From the 2020 Chevrolet Sonic owner's manual. 2 fuse boxes listed.
Engine compartment fuse block
| Fuse | Circuit |
|---|---|
| 1 | Antilock brake system valve |
| 2 | Sunroof |
| 4 | Rear fog lamp |
| 5 | Outside 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 outside mirror |
| 15 | Front heated seats |
| 16 | Fuel system control module 1 |
| 17 | Canister vent |
| 18 | Washer |
| 20 | Engine control module 5 |
| 21 | Fuel system control module 2/Leveling |
| 22 | Transmission control module 1/ DC DC converter |
| 24 | Engine control module 1 |
| 25 | Coil |
| 26 | Engine control module 4 |
| 27 | Engine control module 3 |
| 28 | Engine control module 2 |
| 29 | Injector/Ignition coil |
| 30 | Engine control module |
| 31 | Air conditioning clutch |
| 32 | Transmission control module |
| 33 | Horn |
| 34 | Front fog lamps |
| 35 | Left high-beam headlamp |
| 36 | Right high-beam headlamp |
| J-Case 1 | Front wipers |
| J-Case 2 | Antilock brake system pump |
| J-Case 3 | Blower |
| J-Case 4 | Run/Crank IEC |
| J-Case 5 | Power seat |
| J-Case 6 | Cooling fan K4 |
| J-Case 7 | Cooling fan K5 |
| J-Case 9 | Electric vacuum pump |
| J-Case 10 | Start |
| RLY 1 | Front wiper control |
| RLY 2 | Rear fog lamp |
| RLY 3 | Front wiper speed |
| RLY 4 | Rear window defogger |
| RLY 5 | Run/Crank |
| RLY 9 | Cooling fan K2 |
| RLY 10 | Cooling fan K3 |
| RLY 11 | P/T |
| RLY 12 | Start |
| RLY 13 | Air conditioning clutch |
| RLY 14 | High-beam headlamps |
| RLY 15 | Cooling fan K1 |
Instrument Panel Fuse Block
Location: On the underside of the driver side instrument panel
| Fuse | Circuit |
|---|---|
| DLIS | Discrete logic ignition switch |
| DLC | Data link connector |
| CIGAR APO | Cigar lighter accessory power outlet |
| L/GATE | Liftgate |
| PWR WNDW REAR | Rear power window |
| BCM8 | Body control module 8 |
| BCM7 | Body control module 7 |
| BCM6 | Body control module 6 |
| BCM5 | Body control module 5 |
| BCM4 | Body control module 4 |
| BCM3 | Body control module 3 |
| BCM2 | Body control module 2 |
| BCM1 | Body control module 1 |
| IPC | Instrument panel cluster |
| TELEMATICS | Telematics |
| PAS/SBSA | Park assist system/ Side blind spot alert system |
| RAIN SNSR | Rain sensing wiper |
| AUDIO | Audio |
| 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 |
| IPC/AOS | Instrument cluster/ Automatic occupant sensing display |
| SPARE | – |
| 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 |
Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.
Confirm with your own manual, dipstick or door-jamb label.
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