Repair Fuses: Cadillac XT6 2020 | Fuse Diagrams and Relay Guide
The 2020 Cadillac XT6’s fuse box is an important part of controlling the car’s electrical functions. One of its most important jobs is to keep different circuits safe from electrical overloads. This makes sure that important things like lights, heating, and electronics work smoothly. When an overload or short circuit causes a fuse to blow, it stops the flow of electricity in the circuit and needs to be fixed or replaced. To fix fuses in a Cadillac XT6, you have to find the bad fuse (which is usually easy to spot because the wire inside the fuse is broken) and replace it with a new one of the same grade. It is important to look at the fuse box diagram to find the exact fuses that go with different parts or systems in the car. This image shows how the fuse box is set up visually, which makes troubleshooting and repairs go more quickly. To keep the Cadillac XT6’s electrical system in good shape and make sure it runs at its best, you need to know how to fix fuses and understand how the fuse box is organized. This is true whether you’re fixing a broken light, power window, or other electrical part.
2024 Cadillac XT6 Specs, Price, Features, Mileage (Review)
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems.
Fuses and circuit breakers protect power devices in the vehicle.
Replace a bad fuse with a new one of the identical size and rating.
If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off
Windshield Wipers
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers.
If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
To check a fuse, look at the silver-coloured band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location if a fuse goes out. Replace the fuse as soon as possible.
Engine Compartment Fuse Block
The underhood fuse block is in the engine compartment, on the driver’s side of the vehicle.
Caution
Do not pull the engine compartment fuse block lever, since it is intended only for service purposes. If pulled, vehicle malfunction may occur.
Caution
Spilling liquid on any electrical component of the vehicle may damage it. Always keep the covers on any electrical component.
To remove the fuse block cover, press the clips on the cover and lift it straight up.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F1 | Antilock Brake System |
| F2 | Starter 1 |
| F3 | DC-DC Transformer 1 |
| F4 | – |
| F5 | DC-DC Transformer 2 |
| F6 | Amplifier 1 |
| F7 | Front Blower |
| F8 | Starter 3 |
| F9 | – |
| F10 | – |
| F11 | – |
| F12 | Front Wiper |
| F13 | Starter 2 |
| F14 | – |
| F15 | Rear Wiper 1 |
| F16 | – |
| F17 | – |
| F18 | Automatic Headlamp Leveling Module |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Electronic Brake Control Module |
| F23 | Parking/Trailer Lamps |
| F24 | Right Trailer Stoplamp/ Turnlamp |
| F25 | Steering Column Lock |
| F26 | – |
| F27 | Left Trailer Stoplamp/ Turnlamp |
| F28 | – |
| F29 | – |
| F30 | Washer Pump |
| F31 | – |
| F32 | Headlamp Left |
| F33 | – |
| F34 | Horn |
| F35 | – |
| F36 | – |
| F37 | Headlamp high beam Right |
| F38 | – |
| F39 | Transmission Control Module/Battery 1 |
| F40 | Left Rear Bus Electrical Center/DC DC Ignition |
| F41 | Instrument Cluster |
| F42 | Heating, Ventilation, and Air Conditioning/Central Gateway Module run crank |
| F43 | Head-Up Display |
| F44 | Electronic Brake Control Module Electric Brake Booster/Run/Crank |
| F45 | – |
| F46 | – |
| F47 | – |
| F48 | Rear Wiper 2 |
| F49 | Interior Rearview Mirror/ Trailer/Rear Heated Seat Run Crank |
| F50 | Fuel Tank Zone Module Run Crank |
| F51 | Heated Steering Wheel |
| F52 | Air Conditioning Clutch |
| F53 | – |
| F54 | Coolant pump |
| F55 | Air Conditioning Clutch |
| F56 | – |
| F57 | Engine Control Module/ Ignition |
| F58 | Transmission Control Module/Ignition |
| F59 | Engine Control Module Battery |
| F60 | – |
| F61 | O2 Sensor 1/Aeroshutter/ Mass Air Flow Sensor |
| F62 | Engine Control Module– Odd |
| F63 | O2 Sensor 2 |
| F64 | Engine Control Module– Even |
| F65 | Engine Control Module Powertrain 1 |
| F66 | Engine Control Module Powertrain 2 |
| F67 | Engine Control Module Powertrain 3 |
| F68 | – |
| F69 | – |
| F70 | – |
| F71 | – |
| F72 | – |
| F73 | – |
| F74 | – |
| F75 | – |
| F76 | – |
| F77 | – |
| Relays | Usage |
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | – |
| K5 | Air Conditioning |
| K6 | Coolant pump |
| K7 | Engine Control Module |
| K8 | Folding Seats |
| K9 | – |
| K10 | Starter 2 |
Instrument Panel Fuse Block
The instrument panel fuse block is in the center console between the driver and passenger seats. To access the fuses, open the fuse panel door, or remove the panel from the passenger side by pulling it out or seeing your dealer.
2024 Cadillac XT6 Specs, Price, Features, Mileage (Review)
To reinstall the door, push the door back into its original location. The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F1 | Body Control Module 6 |
| F2 | Diagnostic Link/Central Gateway Module |
| F3 | Electric Steering Column Lock |
| F4 | – |
| F5 | Logistics |
| F6 | Heating, Ventilation, and Air Conditioning/ Humidity Sensor |
| F7 | Body Control Module 3 |
| F8 | – |
| F9 | Right Front Heated Seat |
| F10 | Airbag/Seat Belt |
| F11 | – |
| F12 | Amplifier 2 |
| F13 | Body Control Module 7 |
| F14 | Spare/Left Front Heated Seat |
| F15 | Instrument Panel Switch Bank |
| F16 | Sunroof |
| F17 | Body Control Module 1 |
| F18 | Instrument Cluster/Head-up Display |
| F19 | – |
| F20 | Rear Seat Entertainment |
| F21 | Body Control Module 4 |
| F22 | Infotainment/USB Data/ Aux Jack |
| F23 | Body Control Module 2 |
| F24 | USB Charger/Wireless Charging |
| F25 | Park Aid/Electronic Transmission Range System |
| F26 | Communications Integration Module |
| F27 | Video/Night Vision Module |
| F28 | Heating, Ventilation, and Air Conditioning Display |
| F29 | Radio |
| F30 | Steering wheel adjustment controls |
| F31 | Electronic Brake Control Module Electric Brake Booster |
| F32 | DC AC Inverter |
| F33 | Driver Power Seat |
| F34 | Passenger Power Seat |
| F35 | Battery IEC 1 Feed |
| F36 | Electric Power Steering |
| F37 | Rear Seat Entertainment/USB Charge/Wireless Charging Module/ Auxiliary Power Outlet/ Lighter |
| F38 | Body Control Module 8 |
| F39 | – |
| Circuit Breakers/Minifuses | Usage |
| F40 | – |
| F41 | – |
| F42 | Auxiliary Power Outlet (CB)/Lighter (mini fuse) |
Rear Compartment Fuse Block
The rear compartment fuse block is in the cargo area, on the driver’s side of the vehicle behind the lower trim panel. To open, turn the latch with a flat-bladed tool and pull the trim panel from the edges to fold it down.
The label for this fuse block is in the spare tire area, on the foam under the cargo floor. The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F1 | – |
| F2 | Trailer Battery 1 |
| F3 | Driver Seat Belt Motor |
| F4 | Rear Blower |
| F5 | Rear Drive Control |
| F6 | Passenger Seat Belt Motor |
| F7 | Right Window |
| F8 | Rear Window Defogger |
| F9 | Left Window |
| F10 | Folding Seats 1 |
| F11 | Trailer Reverse |
| F12 | – |
| F13 | – |
| F14 | – |
| F15 | – |
| F16 | – |
| F17 | – |
| F18 | Trailer module |
| F19 | Ventilated seats |
| F20 | – |
| F21 | Trailer Connector |
| F22 | – |
| F23 | – |
| F24 | Passenger Window Switch |
| F25 | – |
| F26 | Trailer Brake |
| F27 | – |
| F28 | Passive Entry/Passive Start |
| F29 | – |
| F30 | Canister Vent |
| F31 | – |
| F32 | Heated Mirror |
| F33 | – |
| F34 | Liftgate Module |
| F35 | Fuel System Control Module/Fuel Tank Zone Module |
| F36 | – |
| F37 | – |
| F38 | Window Module |
| F39 | – |
| F40 | Memory Seat Module |
| F41 | Automatic Occupancy Sensor |
| F42 | Trailer Battery 2 |
| F43 | – |
| F44 | Third Row Seats |
| F45 | Liftgate Motor |
| F46 | Rear Heated Seats |
| F47 | – |
| F48 | Glass Break Sensor |
| F49 | – |
| F50 | – |
| F51 | – |
| F52 | Active Dampening System Module |
| F53 | – |
| F54 | External Object Calculating/Side Blind Zone Alert |
| F55 | Theft Deterrent |
| F56 | Universal Garage Door Opener/Rain Sensor |
| F57 | Folding Seats 2 |
| Circuit Breakers | Usage |
| CB1 | – |
| CB2 | – |
| CB3 | Rear Auxiliary Power Outlet |
| Relays | Usage |
| K1 | Folding Seats 1 |
| K2 | – |
FAQs
Electrical fuses protect the vehicle’s electrical system from damage caused by overcurrent or short circuits.
The 2020 Cadillac XT6 has a total of 50 fuses.
The fuses are located in the fuse box, which is usually found in the engine compartment or under the dashboard.
The vehicle uses blade-type fuses, also known as spade or plug-in fuses.
The amperage rating of the fuses varies depending on their specific function, ranging from 5A to 30A.
A blown fuse can be identified by a visible break in the metal strip inside the fuse.
If you find a blown fuse, it should be replaced with a new fuse of the same amperage rating.
Fuses protect various electrical components such as lights, power windows, audio systems, air conditioning, and more.
Yes, the vehicle’s owner’s manual should have a fuse diagram detailing the location and function of each fuse.
Yes, typically the vehicle comes with a few spare fuses of different amperage ratings for emergency replacement.
No, it’s not recommended to use a fuse with a higher amperage rating as it can lead to damage to the electrical system.
Before replacing a fuse, ensure the vehicle’s ignition is turned off to prevent electrical hazards.
No special tools are required; fuses can typically be replaced using your fingers or a fuse puller if provided.
Yes, while blown fuses are often due to minor issues, they can sometimes indicate larger underlying electrical problems that should be investigated by a professional.
Useful Link:
View full PDF: Cadillac XT6 2020 User Manual | Auto User Guide