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 |
1 | â |
2 | â |
3 | ABS pump |
5 | â |
6 | Rear closure |
7 | Fog lamp |
8 | Memory control module |
9 | Heated windshield |
10 | Seat lumbar |
11 | DC DC converter 1 |
12 | Rear window defogger |
13 | Heated mirrors |
14 | â |
15 | â |
16 | Front wipers |
17 | Passenger power seat |
18 | Sun shade |
19 | Driver power seat |
21 | Sunroof |
22 | Rear wiper |
23 | Auto headlamp leveling |
24 | â |
26 | Transmission control module/Ignition |
27 | Instrument panel/Ignition |
28 | â |
29 | Rear vision camera/Ventilation |
30 | Malfunction indicator lamp/Shift solenoid |
32 | Canister vent/Video processing module |
33 | Front heated seats |
34 | Rear heated seats |
35 | All wheel drive damping control |
36 | Fuel module |
38 | â |
39 | â |
40 | Steering column lock |
41 | â |
43 | Heated steering wheel |
44 | Headlamp leveling |
45 | â |
46 | Engine control module/Ignition |
47 | â |
48 | Cooling fan/DC DCÂ converter 2 |
49 | RDCM |
50 | â |
51 | â |
52 | â |
53 | â |
54 | â |
55 | â |
56 | Starter |
57 | â |
58 | â |
59 | Left LED lamps |
60 | Cooling fan |
61 | â |
62 | â |
63 | â |
65 | A/C HEV |
67 | â |
68 | â |
69 | Right LED lamp/Right high-beam headlamps |
70 | Left high-beam headlamps |
72 | Starter pinion |
74 | â |
75 | Engine control module |
76 | Powertrain â off engine |
77 | â |
78 | Horn |
79 | Washer pump |
81 | Transmission control module/ Engine control module |
82 | â |
83 | Ignition coils |
84 | Coil |
85 | Shunt 60A |
86 | â |
87 | SAI fuel heater |
88 | Aeroshutter |
89 | â |
91 | â |
92 | TPIM motor generator/TPIM |
93 | Keyless entry control module |
95 | Water change air coolant pump |
96 | Fuel heater |
97 | â |
99 | â |
Â
Relays | Usage |
4 | â |
20 | Rear defogger |
25 | Front wiper control |
31 | Run/Crank |
37 | Front wiper speed |
42 | â |
64 | Starter motor |
66 | Powertrain |
71 | Right LEDÂ high beam |
73 | AC clutch |
80 | Starter pinion |
90 | Water change air coolant pump |
94 | â |
98 | Fuel heater |
Instrument Panel Fuse Block
The instrument panel fuse block is in the instrument panel, on the driver side of the vehicle.
Fuses | Usage |
F1 | Left window |
F2 | Right window |
F3 | â |
F4 | HVAC blower |
F5 | Battery 2 |
F6 | Electric steering column |
F7 | â |
F8 | Battery 3 |
F9 | Engine control module/Battery |
F10 | Body control module 2 On/Off |
F11 | â |
F12 | â |
F13 | â |
F14 | â |
F15 | Transmission control module On/Off |
F16 | Amplifier |
F17 | â |
F18 | Battery 7 |
F19 | â |
F20 | Battery 1 |
F21 | Battery 4 |
F22 | Battery 6 |
F23 | Electric steering column lock |
F24 | Airbag sensing diagnostic module/Passenger sensing module |
F25 | Diagnostic link |
F26 | â |
F27 | AC DC inverter |
F28 | â |
F29 | Body control module 8 |
F30 | Overhead console |
F31 | Steering wheel control |
F32 | â |
F33 | HVAC |
F34 | Center gateway module |
F35 | Integrated chassis control module |
F36 | Charger |
F37 | Auxiliary power outlet/Cigar lighter |
F38 | OnStar |
F39 | Monitor |
F40 | Object detection |
F41 | Body control module 1 On/Off |
F42 | Radio |
F43 | Rear accessory power outlet |
F44 | Front accessory power outlet |
Â
Relays | Usage |
K1 | â |
K2 | Retained accessory power |
K3 | â |
K4 | â |
K5 | Logistics |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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