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: 2013
Engine Compartment Fuse Block
Fuses | Usage |
1 | Transmission control module |
2 | Engine control module |
3 | SAI Solenoid (2.4L Engine RPO LEA) |
4 | Not Used |
5 | Ignition/ Transmission control module/Engine control module |
6 | Windshield wiper |
7 | BPIM (eAssist only) |
8 | Not Used |
9 | Fuel injection, Ignition system |
10 | Engine control module |
11 | Oxygen sensor |
12 | Starter |
13 | Fuel system control module |
14 | Trunk release |
15 | MGU coolant pump (eAssist only) |
16 | Heated steering wheel |
17 | Airbag |
18 | BPIM (eAssist only) |
19 | Not Used |
20 | Not Used |
21 | Rear power windows |
22 | Antilock Brake System Valve |
23 | Variable Effort Steering |
24 | Front power windows |
25 | Power outlets |
26 | Antilock Brake System Pump |
27 | Electric parking brake |
28 | Rear window defogger |
29 | Left-Hand Seat Lumbar |
30 | Right-Hand Seat Lumbar |
31 | A/C clutch |
32 | Body control module 6 |
33 | Heated front seats |
34 | Sunroof |
35 | Infotainment system |
36 | Not Used |
37 | Right high-beam headlamp |
38 | Left high-beam headlamp |
39 | Not Used |
40 | Not Used |
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 | Oxygen sensor |
48 | Fog lamps |
49 | Right-Hand Low Beam, High Intensity Discharge Headlamp |
50 | Left-Hand Low Beam, High Intensity Discharge Headlamp |
51 | Horn |
52 | Motor Indicator Lamp |
53 | Inside Rearview Mirror |
54 | Not Used |
55 | Power windows/ Mirrors |
56 | Windshield washer |
57 | Not Used |
58 | Not Used |
59 | Secondary Air Induction (eAssist and 2.4L Engine RPO LEA) |
60 | Heated mirrors |
61 | Not Used |
62 | Canister vent solenoid |
63 | Not Used |
64 | Heater, Ventilation, and Air Conditioning Pump (eAssist Only) |
65 | Not Used |
66 | SAI check valve (eAssist only) |
67 | Fuel system control module |
68 | Not Used |
69 | Battery sensor |
70 | Not Used |
71 | Not Used |
Relays | Usage |
1 | Air Conditioning Control |
2 | Starter |
3 | Cooling Fan |
4 | Front wiper (step 2) |
5 | Front Wiper (Step 1, Interval) |
6 | SAI Valve/Heater (eAssist and 2.4L Engine RPO LEA), Ventilation, and Air Conditioning Pump (eAssist Only) |
7 | Main relay |
8 | Not Used |
9 | Cooling fan |
10 | Cooling fan |
11 | Transmission auxiliary pump (eAssist only) |
12 | Cooling Fan (2.0L Engine RPO LHU) |
13 | Cooling fan |
14 | High Intensity Discharge Lamps |
15 | Ignition |
16 | Secondary AIR Pump (eAssist and 2.4L Engine RPO LEA) |
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 Heater Ventilation Air Conditioning/Blower |
12 | Right-Hand Power Front Seat |
13 | Left-Hand Power Front Seat |
14 | Diagnostic Link Connector |
15 | Airbag |
16 | Spare |
17 | Heating Ventilation Air Conditioning Controller |
18 | Service fuse/ Logistics relay |
19 | Spare |
20 | Automatic occupant sensing |
21 | Instrument cluster |
22 | Discrete Logic Ignition Switch/PEPS |
23 | Body control module 6 |
24 | Body control module 2 |
25 | OnStar |
26 | Spare |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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