2015 Chevrolet Suburban Fuse Box Diagram
A comprehensive guide to the fuse box locations, diagrams, and common issues for your 2015 Chevy Suburban.
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Quick answer
Your 2015 Chevrolet Suburban has three main fuse box locations:
- Under-hood Fuse Block: Located in the engine compartment on the driver's side.
- Instrument Panel Fuse Block: Located on the driver's side of the instrument panel, accessible when the driver's door is open.
- Rear Compartment Fuse Block: Located in the rear cargo area on the driver's side, behind an access panel.
Always consult the fuse legend printed on the inside of the fuse box cover to verify the correct fuse placement and amperage for your specific trim and options package.
Under-hood Fuse Block Diagram
The under-hood fuse block contains high-amperage fuses and relays that control core vehicle functions like the engine, transmission, cooling fans, and ABS.
Fuses
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 40A | Green | Antilock Brake System (ABS) Pump |
| F3 | 30A | Pink | Passenger Side Power Window |
| F4 | 20A | Blue | Left High-Intensity Discharge (HID) Headlamp |
| F5 | 25A | Natural | Air Conditioning (A/C) Clutch |
| F7 | 20A | Blue | Engine Control Module (ECM) / Powertrain Control Module (PCM) |
| F9 | 40A | Green | Blower Motor |
| F11 | 30A | Pink | Starter |
| F13 | 20A | Blue | Fuel Pump |
| F18 | 15A | Lt Blue | Horn |
| F23 | 20A | Blue | Right High-Intensity Discharge (HID) Headlamp |
| F34 | 15A | Lt Blue | Ignition Coils (Odd Bank) |
| F35 | 15A | Lt Blue | Ignition Coils (Even Bank) |
| F39 | 30A | Pink | Integrated Trailer Brake Controller |
| F40 | 30A | Pink | Driver Side Power Window |
| F43 | 60A | Yellow | Cooling Fan (Left) |
| F44 | 60A | Yellow | Cooling Fan (Right) |
| F48 | 60A | Yellow | Instrument Panel Fuse Block Feed |
| F50 | 60A | Yellow | Rear Compartment Fuse Block Feed |
Relays
| Relay # | Circuit / Component Controlled |
|---|---|
| R1 | A/C Clutch |
| R2 | Run/Crank |
| R3 | Cooling Fan (High/Low) |
| R4 | Starter |
| R7 | Fuel Pump |
| R8 | Horn |
| R10 | Powertrain / ECM |
| R12 | Cooling Fan (Right) |
Instrument Panel Fuse Block Diagram
This fuse panel is located behind a cover on the driver's side of the dashboard. It primarily manages interior components and various control modules.
Fuses
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 15A | Lt Blue | Airbag System (SRS) |
| F5 | 10A | Red | Instrument Cluster, Data Link Connector (DLC) |
| F10 | 15A | Lt Blue | Steering Wheel Controls |
| F13 | 10A | Red | HVAC Control Module |
| F23 | 2A | Violet | OnStar |
| F27 | 20A | Blue | Cigarette Lighter / 12V Power Outlet (Instrument Panel) |
| F28 | 15A | Lt Blue | Radio / Infotainment System |
| F29 | 10A | Red | Headlamp Switch, Parking Lamps |
| F32 | 10A | Red | Antilock Brake System (ABS) / Electronic Stability Control (ESC) |
| F33 | 7.5A | Brown | Heated Mirrors |
Relays
| Relay # | Circuit / Component Controlled |
|---|---|
| R1 | Accessory |
| R2 | Retained Accessory Power (RAP) |
Rear Compartment Fuse Block Diagram
Located in the cargo area, this fuse block handles circuits for rear-of-vehicle components like the fuel system control module, lighting, and power outlets.
Fuses
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 25A | Natural | Rear Wiper Motor |
| F2 | 20A | Blue | 12V Power Outlet (Rear Cargo) |
| F7 | 10A | Red | Fuel System Control Module |
| F9 | 10A | Red | Right Stop/Turn Lamp |
| F10 | 10A | Red | Left Stop/Turn Lamp |
| F11 | 10A | Red | Trailer Stop/Turn Lamp (Right) |
| F12 | 10A | Red | Trailer Stop/Turn Lamp (Left) |
| F13 | 10A | Red | Center High Mount Stop Lamp (CHMSL) |
| F14 | 15A | Lt Blue | Tail Lamps / Parking Lamps |
| F19 | 25A | Natural | Rear Heated Seats |
| F30 | 25A | Natural | Sunroof |
How to Test a Fuse
A blown fuse is a common and easily fixable issue. Here’s how to check if a fuse is bad:
- Turn off the vehicle and remove the key from the ignition.
- Locate the correct fuse box and remove the cover.
- Identify the suspect fuse. Most Suburbans come with a small fuse puller tool located in the fuse box itself.
- Remove the fuse. Use the puller or a pair of needle-nose pliers to gently pull the fuse straight out of its slot.
- Inspect the fuse. Look at the thin metal strip inside the plastic housing. If the strip is broken or melted, the fuse is blown and needs to be replaced.
- Replace with a new fuse. It is critical to replace the blown fuse with a new one of the exact same amperage rating. Using a higher-rated fuse can cause severe damage to the electrical circuit and create a fire hazard.
Common Blown Fuses on the 2015 Suburban
- Cigarette Lighter / 12V Power Outlet (Fuse F27, Instrument Panel): This is one of the most common fuses to blow. Often, a faulty phone charger or a coin falling into the outlet is the culprit. Before replacing the fuse, inspect the outlet for any foreign objects.
- Fuel Pump (Fuse F13, Under-hood): If your Suburban cranks but won't start, a blown fuel pump fuse could be the problem. If this fuse blows repeatedly, it could indicate a failing fuel pump or a wiring short that needs to be diagnosed by a technician.
- Radio / Infotainment (Fuse F28, Instrument Panel): If your radio or center screen suddenly goes black, this fuse is the first place to look. Infotainment system glitches can sometimes cause this fuse to blow.
- Trailer Brake/Lamps (Fuses F39, F11, F12): Issues with trailer wiring are a frequent cause of blown fuses. Damaged trailer light wiring or a short in the trailer connector can cause the fuses for trailer turn signals or the brake controller to blow. Always check your trailer wiring before assuming the truck is the problem.
If you find yourself replacing the same fuse repeatedly, it signifies an underlying electrical problem that needs professional diagnosis.
Electrical diagnostics can be complex. If you're not comfortable performing these checks, or if a new fuse blows immediately, it's time to seek professional help. Find a trusted shop on Repairius.
Before you pull a fuse on the 2015 Chevrolet Suburban
- 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 Chevrolet Suburban
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 Chevrolet Suburban 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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