2019 Chevrolet Silverado 1500: Fuse Box Diagram & Amperage
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Quick answer
The 2019 Chevrolet Silverado 1500 has three primary fuse box locations:
- Under-hood fuse block: In the engine bay, on the driver's side.
- Instrument panel fuse block: On the driver's side of the dashboard, accessible when the driver's door is open.
- Rear compartment fuse block: In the rear of the cab, behind the rear seat.
Under-hood Fuse Block
This fuse block contains fuses and relays for engine-related components and other high-power systems. Always disconnect the battery before servicing high-amperage fuses.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 40A | Green | Antilock Brake System (ABS) Pump |
| F2 | 30A | Pink | Radiator Fan |
| F3 | 25A | Natural | Engine Control Module (ECM) / Powertrain Control Module (PCM) |
| F4 | 20A | Yellow | Fuel Pump |
| F5 | 15A | Blue | Ignition Coils |
| F6 | 10A | Red | A/C Clutch |
| F7 | 15A | Blue | Left High-Beam Headlight |
| F8 | 15A | Blue | Right High-Beam Headlight |
| F9 | 15A | Blue | Left Low-Beam Headlight |
| F10 | 15A | Blue | Right Low-Beam Headlight |
| F11 | 30A | Pink | Starter Solenoid |
| F12 | 25A | Natural | Trailer Brake Controller |
| R1 | - | - | Starter Relay |
| R2 | - | - | Fuel Pump Relay |
| R3 | - | - | A/C Clutch Relay |
Instrument Panel Fuse Block
Located on the side of the dashboard, this fuse block primarily protects interior circuits and electronic modules.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F21 | 20A | Yellow | Cigarette Lighter / 12V Power Outlet |
| F22 | 15A | Blue | Radio / Infotainment System |
| F23 | 10A | Red | Airbag System (SRS) |
| F24 | 15A | Blue | Brake Light Switch |
| F25 | 10A | Red | Instrument Panel Cluster |
| F26 | 25A | Natural | Blower Motor |
| F27 | 10A | Red | Tail Lights / Park Lights |
| F28 | 15A | Blue | Horn |
| R4 | - | - | Blower Motor Relay |
Rear Compartment Fuse Block
This fuse block handles circuits for rear-body components and additional accessories.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F41 | 20A | Yellow | Rear 12V Power Outlet |
| F42 | 15A | Blue | Heated Seats |
| F43 | 10A | Red | Rear Window Defroster |
| F44 | 25A | Natural | Sunroof Motor |
How to test a fuse
- Safety First: Turn the ignition off and disconnect the negative battery terminal.
- Locate the Fuse: Find the suspect fuse using the diagram on the fuse box lid or in your owner's manual.
- Remove the Fuse: Use a fuse puller (often found in the fuse box) or a pair of needle-nose pliers to gently remove the fuse.
- Visual Inspection: Look at the thin metal strip inside the plastic body of the fuse. If the strip is broken, the fuse is blown.
- Continuity Test (for a more definitive test):
- Set a multimeter to the continuity setting (it often looks like a sound wave symbol).
- Touch one probe to each metal tang on the fuse.
- If the multimeter beeps or shows a reading of zero (or very close to zero), the fuse is good.
- If the multimeter does not beep and shows "OL" (open line), the fuse is blown.
- Replacement: Replace the blown fuse with a new one of the exact same amperage rating. Using a fuse with a higher rating can cause a fire.
Common blown fuses on this vehicle
-
Cigarette Lighter / 12V Power Outlet Fuse (F21): This is one of the most common fuses to blow, often due to a faulty phone charger or other accessory plugged into the outlet. Before replacing the fuse, unplug everything from the power outlets and inspect them for any foreign objects that may have fallen inside.
-
Trailer Brake Controller Fuse (F12): If you frequently tow, issues with your trailer's wiring can cause this fuse to blow. The first thing to check is the trailer wiring connector on both the truck and the trailer for any corrosion or damage. A short in the trailer's brake wiring is also a common culprit.
-
Radio / Infotainment Fuse (F22): If your radio or touchscreen suddenly goes black, this fuse is the first place to look. This can sometimes happen due to an internal fault in the radio unit itself. If the fuse blows repeatedly, you may need a professional to diagnose the infotainment system.
Note: The fuse numbers and positions can vary slightly based on your vehicle's specific trim level and options. Always confirm the fuse layout by checking the diagram printed on the inside of your fuse box cover.
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Before you pull a fuse on the 2019 Chevrolet Silverado 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 2019 Chevrolet Silverado 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
2014 Silverado 1500
2015 Silverado 1500
2016 Silverado 1500
2017 Silverado 1500
2018 Silverado 1500
2020 Silverado 1500
Maintenance & repair guides
2019 Chevrolet Silverado 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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