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.
Main Instrument Panel Fuse Block
The main instrument panel fuse block is located under the instrument panel, on the passenger’s side of the vehicle.
Fuses | Usage |
SBM | Interior Lamps |
PDM | PDM Module |
A/C | HVAC Motor, HVAC Mix Motors |
IGN SEN | EC Mirror, Driver HTS Seat, Rear Defog Relay, MEM Module, Cool LVL Sensor, Pass Heated Seat |
ELC | HVAC Flat Pk Mtrs, Electronic Level Control Sensor, Electronic Level Control Sensor (R Bec) |
ABS | Anti-Lock Brake System Module |
HVAC | HVAC Main Con Head, HVAC Programmer, IPC |
CR CONT | Stepper Motor Cruise, Cruise Switch |
HUD | HUD Switch, HUD Display |
CSTR/SBM | HVAC Programmer, Instrument Panel Cluster, SBM (275 to LCM) (1135 to BTSI SL) |
LP PK L | Underhood Lamp, L PK/ Sidemarker, L Park/Turn Lamp, SBM, L Tail Signal Lamp, L Tail/Stoplamp, L Rear Sidemarker |
LP PK R | Rt Pk/Sidemarker Lamp, Rt PK/Turn Lamp, Rt Tail/Sign Lamp, Rt Tail/Stoplamp, Rt Rear Sidemarker, Stop/Taillamp, Tail/Signal Lamp, License Lamp, RFA |
RUN | Run/Accessory |
WSW | Wiper Motor |
Blank | Not Used |
WSW/RFA | Wiper Switch, RFA, Rain Sense |
B/U LP | EC Mirror, Back-Up Lamps |
Auxiliary Instrument Panel Fuse Block
The auxiliary instrument panel fuse block is located under the instrument panel, on the passenger’s side of the vehicle.
Fuses | Usage |
PERIM LP | Perimeter Lamps |
ACCY | Accessory |
IGN 3 | Ignition 3 |
Underhood Fuse Block
There are additional fuses located in the engine compartment on the passenger’s side of the vehicle.
Mini Fuses | Usage |
1 | Air Sol |
2 | SBM, LCM |
3 | Turn Signal |
4 | Pre-Oxygen Sensor, Post-Oxygen Sensor |
5 | Air Bag (SIR) |
6 | PCM |
7 | AC Clutch |
8 | Ignition Feed |
9 | Horn Relay |
10 | Spare |
11 | Spare |
12 | Injectors #1-6 |
13 | C-31 |
14 | Right High Beam |
15 | Spare |
16 | Left High Beam |
17 | Spare |
18 | Right Low Beam |
19 | Left Low Beam |
20 | Stop |
21 | Fuel Pump Relay (Wire in BEC) |
22 | Run/Crank |
23 | PCM |
24 | Parking Lamps |
25 | Hazard Flashers |
26 | Spare |
27 | Spare |
28 | ABS #2 |
Mini Relays | Usage |
29 | Ignition |
30 | Horn |
31 | Cool Fan #2 |
32 | Starter |
33 | Air Pump |
34 | Cooling Fan SP |
35 | Cooling Fan 1 |
Micro Relays | Usage |
36 | A/C CLU |
37 | Fuel Pump |
Maxi Fuses | Usage |
38 | Bat #1 |
39 | Blower Motor |
40 | Cooling Fan 1 |
41 | Headlamp |
42 | BAT #2 |
43 | Ignition |
44 | Starter |
45 | ABS |
46 | Fuse Puller |
Rear Compartment Fuse Block
Additional fuses are located in the fuse center under the rear seat. The rear seat cushion must be removed to access the fuses.
Mini Relays | Usage |
1 | Heated Backlite |
Relays | Usage |
2 | Retained Accessory Power (RAP) |
3 | Trunk Release |
4 | Electronic Level Control |
Circuit Breaker | Usage |
5 | Power Seat |
6 | ELC Sensor, ELC Compressor Solenoid |
Mini Fuses | Usage |
7 | Crank |
8 | Accessory Outlet |
9 | PCM/CRU |
10 | SBM Module |
11 | Radio/Phone |
12 | Sunroof |
13 | Spare |
14 | CD Changer, Phone |
15 | Driver Door Module |
16 | Spare |
17 | Radio |
18 | Driver Heated Seat Module |
19 | Rear Door Module |
20 | Trunk Release |
21 | Spare |
22 | Instrument Panel Ashtray Cigarette Lighter |
23 | Spare |
24 | Spare |
25 | Passenger Heated Seat Module |
26 | Right Rear Cig Lighter |
27 | Left Rear Cig Lighter |
28 | RFA, Memory Seat Module, Driver Seat Switch |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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