Fuse Diagram and Relay: 2020 Buick Enclave Fuses Guide
Fuse boxes are an important part of any car’s complicated system because they protect against electrical problems and possible dangers. The 2020 Buick Enclave is no different, with its high-tech engineering. Its fuse box contains a network of safety devices, each carefully built to keep important electrical parts from getting damaged. Anyone who owns a Buick Enclave needs to know how to read the fuse box diagram because it helps them quickly find and replace broken fuses, which keeps important systems running smoothly. Learning how to change the switch in a 2020 Buick Enclave is important for keeping it running at its best and staying safe on the road, whether you need to fix a broken headlight or a power window that won’t work.
2023 Buick Enclave Specs, Price, Features, Mileage (Brochure)
Electrical System
High Voltage Devices and Wiring
Warning
Exposure to high voltage can cause shock, burns, and even death. The high-voltage components in the vehicle can only be serviced by technicians with special training. High-voltage components are identified by labels. Do not remove, open, take apart, or modify these components. High voltage cable or wiring has orange covering or labels. Do not probe, tamper with, cut, or modify high-voltage cables or wiring.
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. 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-colored 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
Caution
Do not pull the engine compartment fuse block lever, since it is intended only for service purposes. If pulled, vehicle malfunction may occur.
To remove the fuse block cover, press the clips on the cover and lift it straight up.
Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
To remove fuses, use the fuse puller and pull straight out.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
- F1 Antilock brake system pump
| Fuses | Usage | Fuses | Usage | Fuses | Usage |
| F2 | Starter 1 | F20 | – | F36 | – |
| F3
F4 |
DC DC
transformer 1 – |
F21 F22 | –
Electronic brake control module |
F37
F38 |
Right low-beam headlamp
Automatic |
| F5
F6 F7 F8 F9 F10 F11 F12 |
DC DC
transformer 2 – – – Vacuum pump Front wiper – – |
F23 F24 F25
F26 F27
F28 |
Parking/Trailer lamps
Right trailer stoplamp/Turnlamp Steering column lock – Left trailer stoplamp/Turnlamp – |
F39 F40
F41 F42 |
headlamp leveling
motor Transmission control module Left rear bus electrical center/ Ignition Instrument cluster Heating, ventilation, and air conditioning |
| F13 | Starter 2 | F29 | – | F43 | Head-up display |
| F14 F15 F16
F17 |
–
Rear wiper – – |
F30 F31 F32 | Washer pump
– Left low-beam headlamp |
F44
F45 |
Communication gateway module/ Run/Crank
– |
| F18 | – | F33 | Front fog lamps | F46 | – |
| F19 | – | F34
F35 |
Horn
– |
F47
F48 |
–
– |
| Fuses | Usage | Fuses | Usage | Fuses | Usage |
| F49 | Interior rearview | F61 | O2 sensor 1/ | F75 | – |
| mirror | Air flow | F76 | – | ||
| F50 | Fuel system control module | F62
F63 |
–
O2 sensor 2/ |
F77 | – |
| F51
F52 F53 |
Heated steering wheel
Folding seats switch – |
F64 F65 |
Canister/Engine oil/ Turbo
Aeroshutter Engine control module |
Relays K1 K2
K3 |
Usage Starter 1 Run/Crank
Vacuum pump |
| F54 | Coolant pump | powertrain 1 | K4 | – | |
| F55 | Air conditioning clutch | F66 | Engine control
module powertrain 2 |
K5
K6 |
Air conditioning
Coolant pump |
| F56 | Integrated chassis
control module |
F67 | Engine control module – odd | K7 | Engine control module |
| F57
F58 |
Engine control
module/Ignition Transmission control module/ |
F68 F69 F70 | –
– – |
K8 K9 K10 | Folding seats
– Starter 2 |
| Ignition | F71 | – | |||
| F59 | Engine control
module battery |
F72 | – | ||
| F60 | Engine control | F73 | – | ||
| module – even | F74 | – |
Instrument Panel Fuse Block
The instrument panel fuse block is inside the center console on the passenger side of the vehicle. Remove the fuse access door by pulling the door at the opening. To remove a fuse, use the fuse puller in the engine compartment fuse block.
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
- F3 Electric steering column lock
- F4 Rear USB port
- F5 –
- F6 Heating, ventilation, and air conditioning
- F7 Body control module 3
- F8 –
- F9 Right front heated seat
- F10 Airbag
- F11 Electronic precision shift
- F12 Amplifier
- F13 Body control module 7
- F14 Left front heated seat
- F15 –
- F16 Sunroof
- F17 Communication gateway module
- F18 Instrument cluster
- F19 Body Control Module 1
- F20 Wireless charger module
- F21 Body Control Module 4
- F22 Infotainment
- F23 Body Control Module 2
- F24 –
- F25 Park Assist
- F26 Communications integration module
- F27 Video
- F28 Radio/Heating, ventilation, and air conditioning display
- F29 Radio
- F30 Steering wheel controls
- F31 Front blower
- F32 DC AC inverter
- F33 Driver power seat
- F34 Passenger power seat
- F29 Radio
- F30 Steering wheel controls
- F31 Front blower
- F32 DC AC inverter
- F33 Driver power seat
- F34 Passenger power seat
Circuit Breakers Usage
- F40 –
- F41 –
- F42 Auxiliary power outlet/Lighter
Rear Compartment Fuse Block
The rear compartment fuse block is behind a trim panel on the driver side of the rear storage compartment. The trim panel is removed by prying along the top edge of the trim panel at two notched locations. Remove the trim panel to access the fuse block. To remove a fuse, use the fuse puller in the engine compartment fuse block. The fuse block label is on the back of the access door in the driver-side rear trim panel.
Fuses Usage
- F1 –
- F2 Trailer
- F3 Folding seats
- F4 Rear blower
- F5 Rear drive control
- F6 –
- F7 Right window
- F8 Rear defogger
- F9 Left window
- F10 –
- F11 Trailer reverse
- F12 USB port/Third row seats
- F13 –
- F14 –
- F15 –
- F16 –
- F17 Air quality sensor
- F18 –
- F19 Ventilated seats/ Massage
- F20 –
- F21 –
- F22 –
- F23 –
- F24 Lumbar
- F25 –
- F26 Trailer brake lamps
- F27 Massage
- F28 Passive entry/ Passive start
- F29 –
- F30 Canister vent
- F31 –
- F32 Heated mirrors
- F33 USB port/Second row seats
- F34 Liftgate module
- F35 Fuel system control module
- F36 –
- F37 –
- F38 Window module
- F39 Rear closure
- F23 –
- F24 Lumbar
- F25 –
- F26 Trailer brake lamps
- F27 Massage
- F28 Passive entry/ Passive start
- F29 –
- F30 Canister vent
- F31 –
- F32 Heated mirrors
- F33 USB port/Second row seats
- F34 Liftgate module
- F35 Fuel system control module
- F36 –
- F37 –
- F38 Window module
- F39 Rear closure
- F55 –
- F56 Universal remote system/Overhead console
- F57 Hands free closure release
Circuit Breakers Usage
- CB1 –
- CB2 –
- CB3 Rear auxiliary power outlet
Relays Usage
- K1 –
- K2 –
FAQs
A fuse box is crucial as it houses fuses protecting various electrical circuits from overloads and short circuits.
Typically located in the engine compartment or under the dashboard on the driver’s side.
Look for a visible break in the metal filament inside or discoloration.
Most owners can replace fuses themselves if they follow proper safety precautions and use the correct replacement fuse.
Yes, including blade-type fuses and cartridge fuses.
No, it’s crucial to use the correct type and amperage rating specified for your Buick Enclave.
Ensure the vehicle is turned off and the key is removed from the ignition to avoid electrical shock or damage.
Periodically, especially if you notice any electrical issues with your vehicle.
Yes, you can usually see a break in the metal filament inside a blown fuse.
It indicates a larger electrical issue that should be diagnosed and repaired by a professional.
No, fuses need to be replaced if blown.
Malfunctioning headlights, power windows, or interior lights are common issues.
Use a fuse tester or multimeter to check for continuity.
Useful Link
View Full PDF: Buick Enclave 2020 User Manual | Auto User Guide
2023 Buick Enclave Specs, Price, Features, Mileage (Brochure)
2020 Buick Enclave Display Setting | How to Use Screen Display