2016 GMC Sierra 1500 Fuse Box Diagram & Amperage
A complete guide to finding every fuse and relay on your 2016 Sierra, including diagrams, amp ratings, and common troubleshooting tips.
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Quick Answer
The 2016 GMC Sierra 1500 has three primary fuse box locations:
- Under-Hood Fuse Block: Located in the engine compartment on the driver's side.
- Left Instrument Panel Fuse Block: Located on the driver's side of the dashboard, accessible when the driver's door is open.
- Right Instrument Panel Fuse Block: Located behind the glove box on the passenger's side.
Important Note: Fuse and relay assignments can vary depending on your truck's trim level, engine, and optional equipment (like 4WD, max trailering packages, etc.). Always verify with the diagram printed on the inside of the fuse box cover before replacing any components.
Under-Hood Fuse Block
This is the main power distribution center for your Sierra. It houses larger fuses and relays that control high-power systems. To access it, release the clips on the cover on the driver's side of the engine bay.
Relay Locations: Many essential relays are also housed here, such as the Fuel Pump Relay, Starter Relay, and A/C Compressor Clutch Relay. Their positions are typically printed on the fuse box cover diagram.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F2 | 60A | Yellow | Radiator Cooling Fan - Left |
| F5 | 40A | Green | Antilock Brake System (ABS) Pump |
| F6 | 30A | Pink | Starter Motor Relay |
| F10 | 20A | Yellow | Fuel Pump |
| F13 | 10A | Red | A/C Compressor Clutch |
| F16 | 15A | Blue | Ignition Coils (Bank 2 - Right) |
| F17 | 15A | Blue | Ignition Coils (Bank 1 - Left) |
| F22 | 30A | Green | Antilock Brake System (ABS) Valves |
| F24 | 10A | Red | Engine Control Module (ECM) / Powertrain Control Module (PCM) - Wake Up |
| F27 | 10A | Red | Right High-Intensity Discharge (HID) Headlamp |
| F29 | 10A | Red | Left High-Intensity Discharge (HID) Headlamp |
| F31 | 15A | Blue | Horn |
| F34 | 15A | Blue | Left Low-Beam Headlight |
| F36 | 15A | Blue | Right Low-Beam Headlight |
| F41 | 30A | Green | Trailer Brake Control Module |
| F43 | 10A | Red | Park/Neutral Position Switch |
| F46 | 15A | Blue | Oxygen (O2) Sensors |
| F51 | 10A | Red | Engine Control Module (ECM) / Transmission Control Module (TCM) |
| F58 | 25A | Natural | Audio Amplifier |
Left Instrument Panel Fuse Block (Driver's Side)
This fuse box manages many of the interior cabin functions, including lighting, infotainment, and various control modules. To access it, open the driver's door and pull off the panel on the side of the dashboard.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F11 | 10A | Red | Instrument Cluster |
| F12 | 10A | Red | Supplemental Inflatable Restraint (Airbag) |
| F13 | 15A | Blue | Steering Wheel Controls, Data Link Connector (DLC) |
| F16 | 15A | Blue | Radio / Infotainment System |
| F17 | 10A | Red | Body Control Module (BCM) 1 |
| F24 | 10A | Red | Body Control Module (BCM) 5 |
| F27 | 15A | Blue | Brake Pedal Switch |
| F32 | 7.5A | Brown | Interior Lights, Parking and Tail Lamps |
| F37 | 2A | Gray | Radio / Infotainment Display |
Right Instrument Panel Fuse Block (Passenger's Side)
This smaller fuse block on the passenger side handles the high-amperage HVAC blower motor and power outlets. Access is typically gained by opening or removing the glove box.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 20A | Yellow | Auxiliary Power Outlet 1 (Cigar Lighter style) |
| F2 | 20A | Yellow | Auxiliary Power Outlet 2 |
| F10 | 30A | Green | HVAC Blower Motor Control Module |
| F17 | 20A | Yellow | Front Heated Seats |
How to Test a Fuse
If a component suddenly stops working, a blown fuse is a likely culprit. Here’s how to check:
- Turn off the vehicle and the affected component.
- Locate the correct fuse box and remove the cover.
- Identify the suspect fuse using the diagram on the cover or in your owner's manual.
- Remove the fuse. A small fuse puller is often included in the fuse box, but needle-nose pliers also work.
- Visually inspect the fuse. A good fuse has an intact, unbroken metal strip inside. A blown fuse will have a gap or a dark scorch mark where the strip has melted and broken.
- Confirm with a multimeter (optional but recommended). Set your multimeter to the continuity setting (often looks like a sound wave symbol). Touch the probes to each of the fuse's metal tabs. If the multimeter beeps, the fuse is good. If it remains silent, the fuse is blown.
Always replace a blown fuse with a new fuse of the exact same amperage rating. Using a higher-rated fuse can cause severe damage to the circuit and create a fire hazard.
Common Blown Fuses on the 2016 GMC Sierra
While any fuse can blow, some are more common than others due to the nature of the circuits they protect.
-
Circuit: Auxiliary Power Outlet / 12V "Cigar Lighter"
-
Symptom: Your phone charger or other plug-in accessory stops working.
-
What to Check First: These fuses often blow when a foreign object, like a coin, falls into the socket and shorts the circuit. Before replacing the fuse (typically a 20A yellow fuse in the right-side instrument panel box), inspect the socket with a flashlight and remove any debris. Also, test your accessory in another vehicle to ensure it isn't the problem.
-
Circuit: Trailer Brake Control / Trailer Lights
-
Symptom: Your truck's lights work, but the trailer lights are out, or the trailer brake controller shows an error.
-
What to Check First: The most common cause is the trailer wiring itself or a corroded/dirty trailer connector on the truck. Before digging into the under-hood fuses (F41 for the controller, others for lighting), thoroughly clean both the truck's plug and the trailer's plug. Check the trailer's wiring for any frays or shorts.
-
Circuit: Radio / Infotainment
-
Symptom: The center screen is black and unresponsive.
-
What to Check First: Sometimes, a simple system glitch can be resolved by turning the truck off, waiting a few minutes, and restarting it. If the problem persists, check the 15A infotainment fuse in the left-side instrument panel box. If this fuse blows repeatedly, it could indicate an internal fault in the radio unit or a short in the wiring behind the dash.
If you're facing persistent electrical issues or aren't comfortable diagnosing them yourself, professional help is recommended.
Find a trusted shop on Repairius.
Before you pull a fuse on the 2016 GMC Sierra 1500
- 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 2016 GMC Sierra 1500
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
2016 GMC Sierra 1500 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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