2015 Chevrolet Silverado 1500 Fuse Box Diagram & Amperage

Quick Answer

The 2015 Chevrolet Silverado 1500 typically has three main fuse box locations:

• Under-hood Fuse Block: Located in the engine compartment on the driver's side, near the battery.
• Instrument Panel Fuse Block: Located on the passenger side of the dashboard, behind a removable panel.
• Rear Under-seat Fuse Block: Located under the rear seat on the driver's side.

Under-hood Fuse Block

This fuse block contains fuses and relays for critical engine functions, powertrain control, ABS, and major electrical systems. Always refer to the fuse legend on the underside of the fuse box cover for the most accurate information for your specific vehicle's trim level.

Instrument Panel Fuse Block

This fuse block, often referred to as the "dash fuse box," typically protects interior accessories, infotainment systems, windows, and other cabin electrical components. It's located behind a removable panel on the passenger side of the dashboard, often requiring the glove box to be opened or removed for access.

Rear Under-seat Fuse Block

This fuse block primarily serves rear-specific accessories, rear power outlets, and other auxiliary systems. It's important to note that specific circuits can vary based on your truck's cab style and installed options. Always consult your owner's manual and the fuse panel cover for exact configurations.

How to Test a Fuse

Testing a fuse is a straightforward process that can help you quickly identify a blown fuse.

1. Safety First: Always turn off the ignition and remove the key before working with fuses. If working under the hood, disconnect the negative battery terminal for extra safety.
2. Locate the Fuse Box: Find the relevant fuse box (under-hood, instrument panel, or rear).
3. Identify the Suspect Fuse: Refer to the fuse diagram (either in your owner's manual or on the fuse box cover) to find the fuse for the component that isn't working.
4. Visual Inspection: Pull the suspect fuse straight out. Most modern fuses are transparent, allowing for a visual check. Look for a broken wire or a melted connection inside the fuse. If it's blown, the wire will be visibly broken.
5. Use a Multimeter or Fuse Tester: For opaque fuses or to confirm a visual inspection, set your multimeter to the continuity setting (often indicated by a speaker or diode symbol). Touch the probes to the two metal test points on top of the fuse. A good fuse will show continuity (the multimeter will beep or show a very low resistance reading). A blown fuse will show no continuity.
6. Replace with Correct Amperage: If you find a blown fuse, replace it with a new fuse of the exact same amperage (A) and type. Never use a fuse with a higher amperage rating, as this can lead to serious electrical damage or fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more commonly encountered due to wear, electrical shorts, or intermittent issues. On a 2015 Chevrolet Silverado 1500, common culprits often include:

• Cigar Lighter / 12V Power Outlets: These fuses (typically F2 in the Instrument Panel Fuse Block and F1 in the Rear Under-seat Fuse Block) are prone to blowing if an overloaded device is plugged in or if there's a short in the accessory being used.
  • What to check first: Disconnect all accessories from the outlets and replace the fuse. If it blows again immediately, there might be a wiring issue with the outlet itself.
• Blower Motor: The blower motor fuse (F10 in the Under-hood Fuse Block or the larger F19 Maxi Fuse) can blow due to a failing blower motor drawing too much current, a clogged cabin air filter causing the motor to work harder, or a short in the blower motor resistor.
  • What to check first: Try operating the blower motor on different speeds. If it only works on high, the resistor might be faulty. If it doesn't work at all, check the fuse, then consider the motor or resistor.
• Headlights / Tail Lights: While less common for both to go out simultaneously, individual headlight or tail light fuses (F6, F7, F8, F9 in the Under-hood Fuse Block for headlights, or F5 in the Rear Under-seat for trailer lights, or F8 in the Instrument Panel for brake lights) can blow due to a faulty bulb, wiring issues, or sometimes an aftermarket lighting accessory.
  • What to check first: Inspect the bulb itself for a broken filament. If the bulb is good, check the wiring for visible damage.
• Trailer Brake Control (F12 Under-hood Fuse Block) / Trailer Auxiliary Power (F20 Under-hood Fuse Block): These heavy-duty fuses are often subjected to significant current draw when towing. They can blow if there's a short in the trailer wiring, an overloaded trailer electrical system, or an issue with the trailer brake controller itself.
  • What to check first: Inspect your trailer's wiring for any visible damage or shorts. Try disconnecting the trailer and seeing if the fuse still blows when only the truck is connected to the controller.

Always remember to consult your owner's manual for the most accurate and specific fuse panel layout and amperage ratings for your particular trim level and options, as configurations can sometimes vary. The diagrams printed on the fuse box lids are also invaluable resources.

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