
Cadillac DeVille 2003 Fuse Box Info
Passenger compartment fuse box location:

The fuse box is located below the rear seat on the driver’s side.
Engine compartment fuse box location:

Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | Fuel Pump |
| 2 | Heater, Ventilation and Air Conditioning Battery |
| 3 | Memory Seat, Tilt and Telescoping Steering |
| 4 | RR Lumbar, Antenna |
| 5 | Driver Door Module |
| 6 | Heated Seat Left Rear |
| 7 | Power Tilt and Telescoping Steering |
| 8 | Supplemental Inflation Restraint |
| 9 | SDAR (XM Satellite Radio) |
| 10 | Lamps Park Right |
| 11 | Fuel Tank Ventilation Solenoid |
| 12 | Ignition 1 |
| 13 | Interior Lamp Dimmer Module |
| 14 | Sunshade |
| 15 | Navigation |
| 16 | Heated Seat Left Front |
| 17 | Interior Lamps |
| 18 | Right Rear Door Module |
| 19 | Stoplamps |
| 20 | Park/Reverse |
| 21 | Audio |
| 22 | Retained Accessory Power for Sunroof |
| 23 | Lamps, Parking Left |
| 24 | Night Vision |
| 25 | Passenger Door Module |
| 26 | Body |
| 27 | Export Lights, Power Locks |
| 28 | Rear HVAC Blower |
| 29 | Ignition Switch |
| 30 | Hazard Signal |
| 31 | Reverse, Locks |
| 32 | Continuous Variable Road Sensing Suspension |
| 33 | Heating, Ventilation, Air Conditioning |
| 34 | Ignition 3 Rear |
| 35 | Antilock Brake System |
| 36 | Heated Seat, Right Front |
| 37 | Heated Seat, Right Rear |
| 38 | Dimmer |
| 60 | Park Brake |
| 61 | Rear Defog |
| 62 | HVAC Blower |
| 63 | Audio Amplifier |
| 64 | ELC Compressor/Exhaust |
| 65 | Cigar Lighter |
| 66 | Not Used |
| Relays | |
| 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 | Reverse Lockout |
| 48 | Suspension Dampers |
| 49 | Ignition 3 |
| 50 | Fuel Tank Door Release |
| 51 | Interior Lamps |
| 52 | Trunk Release |
| 53 | Not Used |
| 54 | Lock, Cylinder |
| 55 | Automatic Level Control Compressor |
| 58 | Cigar Lighter |
| 59 | Rear Defog |
| Circuit Breaker | |
| 56 | Power Seats |
| 57 | Power Windows |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | Assembly Line Diagnostic Link |
| 2 | Accessory |
| 3 | Windshield Wipers |
| 4 | Not Used |
| 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 Module |
| 16 | Injector Bank #2 |
| 17 | Not Used |
| 18 | Not Used |
| 19 | Powertrain Control Module Ignition |
| 20 | Oxygen Sensor |
| 21 | Injector Bank #1 |
| 22 | Cigar Lighter #2 |
| 23 | Cigar Lighter #1 |
| 24 | Daytime Running Lamps |
| 25 | Horn |
| 26 | Air Conditioning Clutch |
| 42 | Not Used |
| 43 | Not Used |
| 44 | Anti-Lock Brake System |
| 45 | Air Pump |
| 46 | Cooling Fan 1 |
| 47 | Cooling Fan 2 |
| Relays | |
| 27 | Headlamp High Beam |
| 28 | Headlamp Low Beam |
| 29 | Fog Lamps |
| 30 | Daytime Running Lamps |
| 31 | Horn |
| 32 | Air Conditioner Clutch |
| 33 | Not Used |
| 34 | Accessory |
| 35 | Not Used |
| 36 | Starter 1 |
| 37 | Cooling Fan 1 |
| 38 | Ignition 1 |
| 39 | Cooling Fan Series/Parallel |
| 40 | Cooling Fan 2 |
| Circuit Breakers | |
| 41 | Starter |





