2015 GMC Acadia: Fuse Box Diagram & Amperage
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Quick Answer
Your 2015 GMC Acadia has two main fuse boxes:
- Under the Hood: Located in the engine compartment, on the passenger's side.
- Instrument Panel: Located on the passenger's side of the dashboard, accessible when the door is open.
Under-Hood Fuse Box
This fuse box contains fuses and relays for critical engine and powertrain components.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 8 | 25A | Natural | LGM (Liftgate Module) |
| 9 | 40A | Green | RDM (Rear Differential Module) |
| 10 | 25A | Natural | TRAILER PWR (Trailer Power) |
| 14 | 30A | Green | TRAILER BK (Trailer Brakes) |
| 20 | 20A | Blue | HEADLP WASH (Headlamp Washer) |
| 22 | 15A | Blue | FRT FOG LP (Front Fog Lamps) |
| 23 | 30A | Green | RR WPR (Rear Wiper) |
| 24 | 40A | Green | ENG 1 (Engine 1) |
| 26 | 20A | Blue | ENG 2 (Engine 2) |
| 32 | 25A | Natural | AUDIO AMP (Audio Amplifier) |
| 36 | 60A | Yellow | IGN (Ignition) |
| 37 | 50A | Red | BATT 2 (Battery 2) |
| 38 | 50A | Red | BATT 1 (Battery 1) |
| 43 | 30A | Green | HVAC BLWR (HVAC Blower) |
| 44 | 40A | Green | ABS 2 (Anti-lock Brake System 2) |
| 45 | 25A | Natural | ABS 1 (Anti-lock Brake System 1) |
| 46 | 60A | Yellow | HDLP (Headlamps) |
| 48 | 30A | Green | ENG FANS (Engine Fans) |
| 49 | 30A | Green | STRTR (Starter) |
| 51 | 15A | Blue | LT HDLP-HI (Left Headlamp - High Beam) |
| 52 | 15A | Blue | RT HDLP-HI (Right Headlamp - High Beam) |
| 53 | 10A | Red | LT HDLP-LO (Left Headlamp - Low Beam) |
| 54 | 10A | Red | RT HDLP-LO (Right Headlamp - Low Beam) |
| 57 | 15A | Blue | HORN (Horn) |
| 58 | 15A | Blue | A/C CMPRSR (Air Conditioning Compressor) |
| 60 | 25A | Natural | FUEL PUMP (Fuel Pump) |
| 61 | 15A | Blue | ECM (Engine Control Module) |
Relay Locations
- 5: HEADLP WASH (Headlamp Washer)
- 18: FRT FOG LP (Front Fog Lamps)
- 21: RR WPR (Rear Wiper)
- 29: ENG 1 (Engine 1)
- 30: ENG 2 (Engine 2)
- 40: HVAC BLWR (HVAC Blower)
- 41: STRTR (Starter)
- 42: ENG FANS (Engine Fans)
- 55: A/C CMPRSR (Air Conditioning Compressor)
- 56: FUEL PUMP (Fuel Pump)
Instrument Panel Fuse Box
This fuse box is located on the passenger side of the dashboard. To access it, open the passenger door and remove the cover.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 1 | 15A | Blue | RR HTD SEAT (Rear Heated Seat) |
| 2 | 10A | Red | HEATED MIRR (Heated Mirrors) |
| 3 | 15A | Blue | CIGAR (Cigar Lighter) |
| 4 | 10A | Red | BCM 1 (Body Control Module 1) |
| 5 | 10A | Red | BCM 2 (Body Control Module 2) |
| 6 | 10A | Red | BCM 3 (Body Control Module 3) |
| 7 | 10A | Red | BCM 4 (Body Control Module 4) |
| 9 | 20A | Blue | RADIO (Radio) |
| 12 | 15A | Blue | PWR OUTLET (Power Outlet) |
| 13 | 10A | Red | AIRBAG (Airbag) |
| 15 | 10A | Red | HVAC CTRL (HVAC Control) |
| 19 | 10A | Red | STR WHEEL CTRL (Steering Wheel Controls) |
| 29 | 10A | Red | INST CLUSTER (Instrument Cluster) |
| 32 | 10A | Red | DR/LCK (Door Lock) |
| 36 | 10A | Red | BCM 7 (Body Control Module 7) |
Note: This is not an exhaustive list. Your 2015 GMC Acadia's fuse configuration may vary depending on its trim level and options. Always consult the fuse box diagram printed on the inside of the fuse box cover for the most accurate information.
How to Test a Fuse
A blown fuse can be identified in two ways:
- Visually: A good fuse has a continuous, unbroken filament running through its center. If this filament is broken or melted, the fuse is blown and needs to be replaced.
- With a Multimeter: For a more definitive test, you can use a multimeter set to the continuity setting. Touch one probe to each of the two metal tabs on top of the fuse. If the multimeter beeps or shows a reading of zero or near-zero ohms, the fuse is good. If it doesn't beep and shows an "OL" (overload) or infinite reading, the fuse is blown.
Common Blown Fuses on the 2015 GMC Acadia
- CIGAR (Cigar Lighter) / PWR OUTLET (Power Outlet) Fuses: These fuses are prone to blowing if you plug in a device that draws too much current, such as a faulty phone charger or an overloaded power inverter. If you find one of these fuses blown, unplug all devices from the power outlets before replacing the fuse.
- RADIO Fuse: If your radio suddenly stops working, this is the first fuse to check. An internal fault in the radio or a short in the wiring can cause this fuse to blow.
- HVAC BLWR (HVAC Blower) Fuse: If your climate control fans stop working, the HVAC BLWR fuse is a likely culprit. A failing blower motor is the usual cause. You may hear a squealing or grinding noise from the blower motor before it fails completely.
Find a trusted shop on Repairius.
Before you pull a fuse on the 2015 GMC Acadia
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2015 GMC Acadia
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2015 GMC Acadia Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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