Jonathan Yarden Jan 30, 2021 · 5 min. read
In this article you will find a description of fuses and relays Buick,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2016, 2017
Engine Compartment Fuse Block
| Fuses | Amps | Usage |
| 1 | 20 | Engine control module |
| 2 | 7,5 | O2 sensor/ Purge solenoid |
| 3 | 15 | Ignition coils/ Injectors |
| 4 | 15 | β |
| 5 | β | β |
| 6a | β | β |
| 6b | 7,5 | Mirror defogger |
| 7 | 5 | Powertrain cooling |
| 8 | 7,5 | Mass airflow sensor/Pre β O2 sensor |
| 9 | β | β |
| 10 | 5 | Battery potential signal |
| 11 | 7,5 | β |
| 12 | β | β |
| 13 | 25 | ABS valve |
| 14 | β | β |
| 15 | 10 | Engine control module |
| 16 | 30 | Starter control |
| 17 | 10 | Transmission control module |
| 18 | 30 | Rear window defogger |
| 19 | 30 | Front power window |
| 20 | 30 | Rear power window |
| 21 | 40 | Rear electrical center |
| 22 | β | β |
| 23 | β | β |
| 24 | 15 | Right high-beam headlamp |
| 25 | 15 | Left high-beam headlamp |
| 26 | 15 | Front fog lamps |
| 27 | 50 | β |
| 28 | β | β |
| 29 | 30 | Electric parking brake |
| 30 | 60 | ABS pump |
| 31 | β | β |
| 32 | 5 | Airbag |
| 33 | β | β |
| 34 | 7,5 | β |
| 35 | 7,5 | Door switch supply/Left power window |
| 36 | 10 | A/C clutch |
| 37 | 10 | Canister vent |
| 38 | β | β |
| 39 | 20 | Fuel system control module |
| 40 | 10 | Front windshield washer |
| 41 | β | β |
| 42 | 40 | Engine cooling fan (RPO LEA) |
| 43 | 30 | Front wipers |
| 44 | β | β |
| 45 | 30 | Engine cooling fan (RPO LEA) |
| 46 | β | β |
| 47 | 15 | Horn |
| 48 | 60 | Engine cooling fan |
| 49 | 20 | Fuel pump |
| 50 | 5 | Rear vision camera |
| 51 | 7,5 | Interior rearview mirror |
| 52 | β | β |
| 53 | 7,5 | Ignition engine control module/ Transmission control module |
| 54 | 7,5 | Instrument cluster/Fuel system control module/HVAC/ Run/Crank |
Β
| Relays | Usage |
| 1 | β |
| 2 | Starter |
| 3 | Engine control powertrain |
| 4 | Rear window defogger |
| 5 | β |
| 6 | High-beam headlamps |
| 7 | β |
| 8 | β |
| 9 | β |
| 10 | EGR/Coolant pump/ AIR solenoid valve |
| 11 | Engine cooling fan (RPO LEA) |
| 12 | Engine cooling fan (RPO LEA) |
| 13 | Engine cooling fan (RPO LEA) |
| 14 | Run/Crank |
Instrument Panel Fuse Block
| Fuses | Amps | Usage |
| 1 | 2 | Steering wheel controls |
| 2 | 20 | Body control module |
| 3 | 20 | Body control module |
| 4 | 20 | Infotainment system |
| 5 | 10 | Information display/Parking assist |
| 6 | 20 | Cigar lighter |
| 7 | 20 | Power outlet |
| 8 | 30 | Body control module |
| 9 | 30 | Body control module |
| 10 | 30 | Body control module |
| 11 | 40 | Interior fan |
| 12 | 25 | Driver power seat |
| 13 | β | β |
| 14 | 7,5 | Diagnostic connector |
| 15 | 10 | Airbag |
| 16 | 10 | Central locking system/ Tailgate |
| 17 | 10 | A/C system |
| 18 | 30 | Infotainment system |
| 19 | 30 | Body control module |
| 20 | 5 | Passenger power seat |
| 21 | 5,5 | Instrument cluster |
| 22 | 2/5 | Ignition/ Electronic key system |
| 23 | 20 | Body control module |
| 24 | 20 | Body control module |
| 25 | β | β |
| 26 | β | β |
Β
| Relays | Usage |
| 1 | Trunk open |
| 2 | Door security |
| 3 | Power outlet |
Rear Compartment Fuse Block
The rear compartment fuse block, if equipped, is on the left side of the trunk behind a cover.
| Fuses | Amps | Usage |
| F01 | β | β |
| F02 | β | β |
| F03 | 5 | Rear parking assist |
| F04 | β | β |
| F05 | β | β |
| F06 | β | β |
| F07 | 10 | β |
| F08 | β | β |
| F09 | β | β |
| F10 | β | β |
| F11 | β | β |
| F12 | β | β |
| F13 | β | β |
| F14 | β | β |
| F15 | β | β |
| F16 | 5 | Rear vision camera |
| F17 | β | β |
| F18 | β | β |
| F19 | 7,5 | Heated steering wheel |
| F20 | 25 | Sunroof |
| F21 | 25 | Heated seats |
| F22 | β | β |
| F23 | β | β |
| F24 | β | β |
| F25 | 5 | Side blind zone alert |
| F26 | 30 | β |
| F27 | 30 | Passive entry/ Passive start |
| F28 | β | β |
| F29 | β | β |
| F30 | β | β |
| F31 | 30 | Amplifier |
| F32 | β | β |
Β
| Relays | Usage |
| R01 | Run/Crank |
| R02 | β |
| R03 | β |
| R04 | β |
| R05 | β |
WARNING:Β Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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