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: 2018
Engine Compartment Fuse Block
Fuses | Usage |
F01 | Starter 1 |
F02 | Starter 1 |
F03 | Non walk |
F04 | Engine control module |
F05 | Flex fuel |
F06 | β/Transmission control module |
F07 | β |
F08 | Engine control module |
F09 | A/C |
F10 | Canister vent solenoid |
F11 | Fuel pump |
F12 | Heated seats |
F13 | Engine coolant pump |
F14 | β |
F15 | O2 sensor |
F16 | Ignition coils β odd |
F17 | Ignition coils β even |
F18 | β |
F19 | β |
F20 | DC DC/Transmission |
F21 | Liftgate |
F22 | ABS |
F23 | Washer pump |
F24 | Headlamp washer |
F25 | β |
F26 | Transmission oil pump |
F27 | ABS |
F28 | β |
F29 | Rear window defogger |
F30 | Mirror defogger |
F31 | β |
F32 | Various low current functions/Circuit 39 splice |
F33 | β |
F34 | Horn |
F35 | β |
F36 | Right high-beam headlamp |
F37 | Left high-beam headlamp |
F38 | Automatic headlamp leveling |
F39 | Front fog lamps |
F40 | Transmission oil pump |
F41 | Passenger seat ventilation |
F42 | Headlamp position |
F43 | β |
F44 | Interior rearview mirror |
F45 | β |
F46 | Driver seat ventilation |
F47 | Electric steering column lock |
F48 | Rear wiper |
F49 | β |
F50 | β |
F51 | Right daytime running lamp |
F52 | Engine control module/ Transmission control module |
F53 | β |
F54 | β |
F55 | Front wiper |
F56 | β |
F57 | Left daytime running lamp |
K01 | Start/Stop |
K02 | A/C clutch |
K03 | Engine control module |
K04 | Wiper |
K05 | Start solenoid |
K06 | β |
K07 | β |
K08 | Transmission oil pump |
K09 | Wiper speed |
K10 | Starter |
K11 | Headlamp washers |
K12 | High-beam headlamps |
K13 | Daytime running lamps |
K14 | Run/Crank |
K15 | Rear window/Mirror defogger |
Circuit Breaker | Usage |
K01 | Start/Stop |
K02 | A/C clutch |
K03 | Engine control module |
K04 | Wiper |
K05 | Start solenoid |
K06 | β |
K07 | β |
K08 | Transmission oil pump |
K09 | Wiper speed |
K10 | Starter |
K11 | Headlamp washers |
K12 | High-beam headlamps |
K13 | Daytime running lamps |
K14 | Run/Crank |
K15 | Rear window/Mirror defogger |
Instrument Panel Fuse Block
The instrument panel fuse block is in the glove box.
Fuses | Usage |
F1 | β |
F2 | Front HVAC blower |
F3 | Power seat |
F4 | Lighter (China only) |
F5 | β |
F6 | Front power windows |
F7 | β |
F8 | Accessory power outlet |
F9 | Body control module 8 |
F10 | Rear power windows |
F11 | β |
F12 | Sunroof |
F13 | Front heated seats |
F14 | Exterior rearview mirror |
F15 | Body control module 3 |
F16 | β |
F17 | Body control module 6 |
F18 | Body control module 7 |
F19 | Data link connector |
F20 | SDM |
F21 | HVAC |
F22 | Liftgate release |
F23 | Passive entry/ Passive start |
F24 | OCC sensor |
F25 | Steering wheel controls |
F26 | Ignition |
F27 | Body control module 4 |
F28 | Transmission control module |
F29 | Body control module 2 |
F30 | USB |
F31 | Rear HVAC blower |
F32 | Body control module 1 |
F33 | Universal remote system |
F34 | Parking assist |
F35 | OnStar |
F36 | Display |
F37 | Radio |
Rear Compartment Fuse Block
The rear compartment fuse block is behind a cover on the left side of the rear compartment.
Fuses | Usage |
F1 | β |
F2 | DC AC |
F3 | β |
F4 | Passenger power seat |
F5 | Memory seat module |
F6 | β |
F7 | Amplifier |
F8 | Rear accessory power outlet |
F9 | Rear heated seat |
F10 | Logistics relay |
F11 | Rear HVAC |
F12 | Power liftgate HF sensor |
F13 | Parking/Trailer lamps |
F14 | Side blind zone alert |
F15 | Left parking lamp |
F16 | Right parking lamp |
F17 | Body control module 6 |
F18 | Heated steering wheel |
F19 | AWD |
F20 | Lumbar seat |
F21 | Rear heated seat |
F22 | Rear drive control module |
F23 | Trailer left turn signal lamp |
F24 | Trailer right turn signal lamp |
K1 | Parking lamps |
K2 | β |
K3 | Ignition |
K4 | Logistics |
K5 | DC AC |
K6 | β |
K7 | Parking assist |
K8 | Right turn |
K9 | Left turn |
K10 | β |
Circuit Breaker | Usage |
K1 | Parking lamps |
K2 | β |
K3 | Ignition |
K4 | Logistics |
K5 | DC AC |
K6 | β |
K7 | Parking assist |
K8 | Right turn |
K9 | Left turn |
K10 | β |
WARNING:Β Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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