2018 GMC Acadia Fuses and Fuse Box Diagram User Guide
The 2018 GMC Acadia fuse box diagram highlights the location and function of each fuse and relay. Understanding this layout helps vehicle owners quickly identify and resolve electrical issues, ensuring optimal performance and safety on the road.
2023 GMC ACADIA Specs, Price, Features and Mileage (Brochure)
Video: 2018 GMC Acadia Fuses
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
The underhood fuse block is in the engine compartment, on the driver 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. Spilling liquid on any electrical component on 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.
| Fuse | Usage |
|---|---|
| F1 | Antilock brake system |
| F2 | Starter 1 |
| F3 | DC DC transformer 1 |
| F4 | – |
| F5 | – |
| F6 | – |
| F7 | DC DC transformer 2 |
| F8 | Starter 3 |
| F9 | – |
| F10 | – |
| F11 | – |
| F12 | Front wiper |
| F13 | Starter 2 |
| F14 | LED/Automatic headlamp leveling |
| 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/Turn signal lamp |
| F25 | Steering column lock |
| F26 | – |
| F27 | Left trailer stoplamp/Turn signal lamp |
| F28 | – |
| F29 | – |
| F30 | Washer pump |
| F31 | Headlamp low-beam right |
| F32 | Headlamp low-beam left |
| F33 | Fog lamps |
| F34 | Horn |
| F35 | – |
| F36 | Headlamp high-beam left |
| F37 | Headlamp high-beam right |
| F38 | Automatic headlamp leveling motor |
| F39 | Transmission control module 1 |
| F40 | Left rear bus electrical center/Ignition |
| F41 | Instrument cluster |
| F42 | Heating, ventilation, and air conditioning |
| F43 | Head-up display |
| F44 | – |
| F45 | – |
| F46 | – |
| F47 | – |
| F48 | Rear wiper 2 |
| F49 | Interior rearview mirror/Trailer |
| F50 | Fuel system control module |
| F51 | Heated steering wheel |
| F52 | Air conditioning clutch |
| F53 | Transmission range control module |
| F54 | Coolant pump |
| F55 | – |
| F56 | – |
| F57 | Engine control module/Ignition |
| F58 | Transmission control module/Ignition |
| F59 | Engine control module battery |
| F60 | Transmission control module 2 |
| F61 | O2 sensor 1/Aeroshutter |
| 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 | Powertrain TRCM |
| F68 | – |
| F69 | – |
| F70 | – |
| F71 | – |
| F72 | – |
| F73 | – |
| F74 | – |
| F75 | – |
| F76 | – |
| F77 | – |
| Relay | Usage |
|---|---|
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | LED/Automatic headlamps |
| K5 | – |
| K6 | Coolant pump |
| K7 | Engine control module |
| K8 | Air conditioning |
| K9 | – |
| K10 | Starter 2 |
Instrument Panel Fuse Block
The instrument panel fuse block is inside the center console on the passenger side of the vehicle. See the fuse block cover for specific fuse information. Open the fuse panel door, or remove the panel from the passenger side by pulling it out.
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.
| Fuse | Usage |
|---|---|
| F1 | Body control module 6 |
| F2 | Diagnostic link |
| F3 | Electric steering column lock |
| F4 | – |
| F5 | Logistics |
| F6 | Heating, ventilation, and air conditioning |
| F7 | Body control module 3 |
| F8 | Head-up display (if equipped) |
| F9 | Right front heated seat |
| F10 | Airbag/Seat belt |
| F11 | Electronic precision shift |
| F12 | Amplifier |
| F13 | Body control module 7 |
| F14 | Left front heated seat |
| F15 | Instrument panel switch bank |
| F16 | Sunroof |
| F17 | Body control module 1 |
| F18 | Instrument cluster |
| 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 | Parking assist |
| F26 | CIM |
| F27 | Video |
| F28 | Heating, ventilation, and air conditioning display |
| F29 | Radio |
| F30 | Steering wheel adjustment controls |
| F31 | Front blower |
| 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 |
| F38 | Body control module 8 |
| F39 | – |
| 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.
Remove the side bin, load floor, and foam. Remove the trim plate to access the fuse block. The label for this fuse block is in the spare tire area, on the foam under the cargo floor.
Useful Links
View Full PDF: 2018 GMC Acadia Owner’s Manual | Auto User Guide
2023 GMC ACADIA Specs, Price, Features and Mileage (Brochure)
Display Screen: 2018 GMC Acadia Warning Messages Guide