• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • Home
  • Chevy T-Shirts
  • Technical Area
  • Chevy VIN Decoder
  • Truck Identification Guides
  • Chevy Owners Manuals

Chevrolet and GMC Truck Information: Silervado, Sierra, and Colorado

Your online resource for classic & modern chevy truck information

1999-2006 Chevy Silverado & Sierra Fuse Box Diagram

August 20, 2020 by JakeLeave a Comment

The fuses are the heart of your Chevy’s electrical system. Nearly every system in a car that requires battery or electric power (windows, door locks, lighting, stereo, etc. etc.) is wired and powered through a fuse. The battery sends power to the fuse which then transfers it to the specific system on the car. The purpose of a fuse is to prevent the battery from directly overloading and melting a systems wiring.

When a fuse becomes overloaded, or is carrying too many amps of power for its capacity, the fuse breaks. When a fuse breaks, it cuts off the power supply to that specific system. So when you experience an electrical-related failure in your car, the fuses are the first place you should look.

Fuses are extremely important as they protect all of our electrical components. If your battery ran its power directly to your stereo instead of through a fuse first, if the battery accidentally overloaded the stereo it would break everything. And then you’d need to spend a few thousand dollars replacing your full stereo system instead of $0.50 replacing the fuse.

Types of Chevy & GMC Fuses

Fuses come in different colors and different sizes. The color and size of the fuse depict the amount of power (in amps) the fuse is capable of supplying. Stereo systems require a lot of electrical power, so they will usually have a bigger and more powerful fuse than say the power windows.

The amp rating is usually marked right on the top of the fuse. However, coloring can also help you identify its amp rating. You need to be careful to use the correct fuse when replacing a bad one. While some of the different sizes will not fit into the fuse box, ie. a 5amp fuse will not fit in a 40amp fuse slot, there are a lot of different amperage fuses that will fit in the same fuse slots. Using a higher powered fuse than necessary usually won’t be a problem, but if you accidentally put a 10amp fuse where a 30amp fuse should be, you’re going to blow the fuse extremely quickly.

See these two below exhibits to help identify fuses:

Chevy Silverado Fuse Colors

Chevy Silverado Fuse Types

Where is my Chevy Silverado Fuse Box Located?

Silverado’s and Sierra’s, and pretty much most vehicles, will all have two fuse boxes. One will be located inside of the engine bay, and the second will be located in the driver side footwell.

On Silverado’s and Sierra’s the engine fuse box is located on the right side of the engine bay when facing it, close to the top right corner. See the below picture for the location on 1999-2006 trucks. Note that this is what it looks like with the fuse box cover off. When you open your hood, this will have a plastic covering over it which should pop off very easily.

Silverado Engine Fuse Box Location

The second fuse box is located within the driver-side dashboard. When you open up the driver door, the fuse box is located within the flat part of the dashboard that is directly facing you / meets directly with the door when closed. The panel that it sits under is the triangle-like shaped panel. You should be able to pop it out pretty easily by pulling from the bottom of it.

Silverado Interior Fuse Box Location

Diagnosing a Blown Fuse

Now that you’ve found the fuse boxes, how can you tell if a fuse is blown? The majority of fuses will be made of a colored, see-through plastic. When you look inside of the plastic, you’ll see a small metal connector piece. This is the piece that provides the amp transfer from the battery to the system. When the fuse becomes overloaded and breaks or blows the metal connector piece will actually break.

You’ll notice the metal inside is actually snapped in half. This is a safety measure to prevent the overloaded amps from being transferred to your electrical system. Instead, the fuse blows and prevents the excess amperage from being passed to your components.

Here is a picture of a good fuse vs. a bad one. It is worth noting that the internal metal connector will not always be “S” shaped like the one in this example. More commonly they will look like an “n” or a hill.

Chevy Silverado Good vs Blown Fuse

1999-2006 Chevy Silverado Fuse Box Diagram

Note this diagram is also applicable for GMT800 1999-2006 GMC Sierra’s as well. While the covers for the fuse boxes should have these diagrams on the inside of the them, these cars are getting old now so they might be hard to read or have worn away by now.

Silverado Engine Bay Fuse Box Diagram

Silverado Engine Fuse Box Diagram

Silverado Engine Fuse Block Diagram

Silverado Engine Fuse Junction Block Diagram

Silverado Interior Instrument Panel Fuse Box Diagram

Silverado Interior Fuse Box Diagram

Share this:

  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)

Related

Filed Under: Chevy & GMC Trucks, GMT800

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Chevy Truck T-Shirts

Chevytrucks.org

Chevytrucks.org is a website dedicated to modern, classic, and vintage Chevrolet Trucks. The site focuses on maintenance, do-it-yourself, and performance modification guides amongst general Chevy Truck articles.

Top Posts

Service Stabilitrak & Traction Control

Chevy Service Stabilitrak & Traction Control Lights

January 14, 2021 By JakeLeave a Comment

Duramax LML Engine Problems

The 4 Most Common Duramax LML Engine Problems

January 9, 2021 By JakeLeave a Comment

Duramax P2563 Engine Code: Vane Position Sensor

November 9, 2020 By JakeLeave a Comment

Footer

About ChevyTrucks.org

Our site is all about Chevy Trucks, from the classics to today. We post engine problems guides, reliability guides, performance upgrades, lift kits, suspension, you name it.

We are Chevy Truck enthusiasts and aim to provide you with everything you need to know about the Silverado, Sierra, and Colorado whether you’re just looking to buy or already own one and are looking to improve it!

Recent

  • Chevy Service Stabilitrak & Traction Control Lights
  • The 4 Most Common Duramax LML Engine Problems
  • Duramax P2563 Engine Code: Vane Position Sensor
  • P0449 Engine Code – Diagnosis & Troubleshooting
  • Chevy P1345 Engine Code: Diagnosis & Repair

Search

Automotive Performance Blog

Powerstroke & Cummins Diesels

Legal Pages

  • Privacy Policy

Copyright © 2021 ยท Dedicated to making your Chevy Truck bad***

Privacy Policy