Jonathan Yarden Oct 06, 2021 · 5 min. read
In this article you will find a description of fuses and relays Cadillac,
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.
Underhood Junction Block
The front Bussed Electrical Center (BEC) is located in the front of the engine compartment between the windshield washer fluid reservoir and the power steering fluid reservoir (on the passenger’s side). Lift the cover to gain access.
Minifuses
| Fuse |
Usage |
| 1 |
ALDL |
| 2 |
Accessory |
| 3 |
Windshield Wipers |
| 4 |
— |
| 5 |
Headlamp Low Beam Left |
| 6 |
Headlamp Low Beam Right |
| 7 |
Instrument Panel |
| 8 |
Powertrain Control Module Battery |
| 9 |
Headlamp High Beam Right |
| 10 |
Headlamp High Beam Left |
| 11 |
Ignition 1 |
| 12 |
Fog Lamps |
| 13 |
Transmission |
| 14 |
Cruise Control |
| 15 |
Coil MDL |
| 16 |
Injector Bank #2 |
| 17 |
— |
| 18 |
— |
| 19 |
Powertrain Control Module Ignition |
| 20 |
Oxygen Sensor |
| 21 |
Injector Bank #1 |
| 22 |
Auxiliary Power (Cltr 2) |
| 23 |
Cigar Lighter |
| 24 |
Daytime Running Lamps |
| 25 |
Horn |
| 26 |
Air Conditioner Clutch |
Micro Relays
| Relay |
Usage |
| 27 |
Headlamp High Beam |
| 28 |
Headlamp Low Beam |
| 29 |
Fog Lamps |
| 30 |
Daytime Running Lamps |
| 31 |
Horn |
| 32 |
Air Conditioner Clutch |
Mini Relays
| Relay |
Usage |
| 33 |
— |
| 34 |
Accessory |
| 35 |
— |
| 36 |
Starter 1 |
| 37 |
Cooling Fan Secondary |
| 38 |
Ignition 1 |
| 39 |
Cooling Fan Series/Parallel |
| 40 |
Cooling Fan Primary |
Maxibreaker
| Circuit breaker |
Usage |
| 41 |
Starter |
MaxiFuses
| Fuse |
Usage |
| 42 |
— |
| 43 |
Antilock Brake System |
| 44 |
Air Pump |
| 45 |
Air Pump |
| 46 |
Cooling Fan Secondary |
| 47 |
Cooling Fan Primary |
The spare fuses are located in numbers 48 through 52.
The fuse puller is located in number 53.
Rear Underseat Bussed Electrical Center (BEC)
The rear BEC is located under the rear seat on the driver’s side. The rear seat cushion must be removed to access the BEC.
Minifuses
| Fuse |
Usage |
| 1 |
Fuel Pump |
| 2 |
Heater, Ventilation, Air Conditioner Blower |
| 3 |
Memory Seat, Tilt and Telescoping Steering |
| 4 |
— |
| 5 |
Driver Door Module |
| 6 |
Heated Seat Left Rear |
| 7 |
Power Tilt and Telescoping Steering |
| 8 |
Supplemental Inflation Restraint |
| 9 |
— |
| 10 |
Lamps Park Right |
| 11 |
Fuel Tank Ventilation Solenoid |
| 12 |
Ignition 1 |
| 13 |
Lamps, Parking Left |
| 14 |
Interior Lamp Dimmer Module |
| 15 |
Navigation |
| 16 |
Heated Seat Left Front |
| 17 |
Export Lighting |
| 18 |
Rear Door Modules |
| 19 |
Stoplamps |
| 20 |
Neutral Safety Back-up |
| 21 |
Audio |
| 22 |
Retained Accessory Power for Sunroof |
| 23 |
— |
| 24 |
— |
| 25 |
Passenger Door Module |
| 26 |
Fuel Door/Trunk Release (Body) |
| 27 |
Interior Lamps |
| 28 |
Rear HVAC Blower |
| 29 |
Ignition Switch |
| 30 |
— |
| 31 |
Heated Seat Right Front |
| 32 |
Continuous Variable Road Sensing Suspension |
| 33 |
Heating, Ventilation, Air Conditioning |
| 34 |
Ignition 3 Rear |
| 35 |
Antilock Braking System |
| 36 |
Turn Signal/Hazard |
| 37 |
Heated Seat Right Rear |
| 38 |
Dash Integration Module |
Micro Relays
| Relay |
Usage |
| 39 |
Fuel Pump |
| 40 |
Parking Lamps |
| 41 |
Ignition 1 |
| 42 |
Park Brake A |
| 43 |
Park Brake B |
| 44 |
Park Shift Interlock |
| 45 |
Reverse Lamps |
| 46 |
Retained Accessory Power for Sunroof |
| 47 |
Rear HVAC Blower |
| 48 |
CVRSS Dampers |
| 49 |
Ignition 3 |
| 50 |
Fuel Tank Door Release |
| 51 |
Interior Lamps |
| 52 |
Trunk Release |
| 53 |
Front Courtesy Lamps |
| 54 |
Rear Courtesy Lamps |
| 55 |
Electronic Level Control Compressor |
Circuit Breakers
| Relay |
Usage |
| 56 |
Power Seats |
| 57 |
Power Windows |
Mini Relays
| Relay |
Usage |
| 58 |
Cigarette Lighter |
| 59 |
Rear Defog |
MaxiFuses
| Fuse |
Usage |
| 60 |
Park Brake |
| 61 |
Rear Defog |
| 62 |
Export Brake |
| 63 |
Audio Amplifier |
| 64 |
ELC Compressor/Exhaust |
| 65 |
Cigar Lighter |
| 66 |
— |
The spare fuses are located in numbers 70 through 74.
The fuse puller is located in number 75.
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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