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: 2017
Engine Compartment Fuse Block
| Fuses | Usage |
| 1 | Transmission control module |
| 2 | Engine control module |
| 3 | β |
| 4 | β |
| 5 | Ignition/ Transmission control module/Engine control module |
| 6 | Windshield wiper |
| 7 | BPIM (eAssist only) |
| 8 | β |
| 9 | Fuel injection/ Ignition system |
| 10 | Engine control module |
| 11 | O2 sensor |
| 12 | Starter |
| 13 | Fuel system control module |
| 14 | Trunk release |
| 15 | MGU coolant pump (eAssist only) |
| 16 | Heated steering wheel |
| 17 | β |
| 18 | BPIM (eAssist only) |
| 19 | β |
| 20 | β |
| 21 | Rear power windows |
| 22 | ABS valve |
| 23 | Obstacle detection |
| 24 | Front power windows |
| 25 | Power outlets |
| 26 | ABS pump |
| 27 | Electric parking brake |
| 28 | Rear window defogger |
| 29 | Driver seat lumbar |
| 30 | Passenger seat lumbar |
| 31 | A/C clutch |
| 32 | Body control module 6 |
| 33 | Heated front seats |
| 34 | Sunroof |
| 35 | Infotainment system |
| 36 | Adaptive cruise |
| 37 | Right high-beam headlamp |
| 38 | Left high-beam headlamp |
| 39 | AWD |
| 40 | β |
| 41 | Vacuum pump |
| 42 | Radiator fan |
| 43 | Passive entry/ Passive start |
| 44 | Transmission auxiliary pump (eAssist only) |
| 45 | Radiator fan |
| 46 | Terminal 87/Main relay |
| 47 | O2 sensor |
| 48 | Fog lamps |
| 49 | Right low-beam HID headlamp |
| 50 | Left low-beam HID headlamp |
| 51 | Horn |
| 52 | Malfunction indicator lamp |
| 53 | Interior rearview mirror |
| 54 | Rear vision camera |
| 55 | Power windows/ Mirrors |
| 56 | Windshield washer |
| 57 | β |
| 58 | β |
| 59 | Secondary air induction (eAssist only) |
| 60 | Heated mirrors |
| 61 | β |
| 62 | Canister vent solenoid |
| 63 | β |
| 64 | HVAC pump (eAssist only) |
| 65 | β |
| 66 | SAI check valve (eAssist only) |
| 67 | Fuel system control module |
| 68 | β |
| 69 | Battery sensor |
| 70 | Right low-beam headlamp/DRL |
| 71 | β |
Β
| Relays | Usage |
| 1 | A/C control |
| 2 | Starter |
| 3 | β |
| 4 | Front wiper (step 2) |
| 5 | Front wiper (step 1) |
| 6 | Right low-beam headlamp/DRL |
| 7 | Main relay |
| 8 | Auxiliary heater pump (eAssist only) |
| 9 | Cooling fan |
| 10 | Cooling fan |
| 11 | Transmission auxiliary pump (eAssist only) |
| 12 | β |
| 13 | Cooling fan |
| 14 | HID headlamps/Left low-beam headlamp/DRL |
| 15 | Ignition |
| 16 | Secondary AIR pump (eAssist only) |
| 17 | Window/Mirror defogger |
Instrument Panel Fuse Block
The instrument panel fuse block is located in the instrument panel, on the driver side of the vehicle.
| Item | Usage |
| 1 | Suspension control module/Universal garage door opener/ESC |
| 2 | Body control module 1 |
| 3 | Body control module 5 |
| 4 | Radio |
| 5 | Radio displays/ Parking assist/ Infotainment/Module tunnel control |
| 6 | Instrument panel power outlet |
| 7 | Console power outlet |
| 8 | Body control module 3 |
| 9 | Body control module 4 |
| 10 | Body control module 8 |
| 11 | Front HVAC blower |
| 12 | Right front seat |
| 13 | Left front seat |
| 14 | Diagnostic link connector |
| 15 | Airbag |
| 16 | Steering wheel controls |
| 17 | HVAC controller |
| 18 | Service fuse/ Logistics relay |
| 19 | Memory seats |
| 20 | Automatic occupant sensing |
| 21 | Instrument cluster |
| 22 | Discrete logic ignition switch/ Passive entry/ Passive start |
| 23 | Body control module 6 |
| 24 | Body control module 2 |
| 25 | OnStar |
| 26 | β |
WARNING:Β Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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