Fuses and fusible links — general information


1. The electrical circuits of the vehicle are protected by a combination of fuses, circuit breakers and fusible links. The main fuse/ relay panel is in the engine compartment (see illustration), while the interior fuse/relay panel is located inside the passenger com­partment (see illustrations). Each of the fuses is designed to protect a specific circuit, and the various circuits are identified on the fuse panel lid. Interior fuse boxes are located on either end of the dash. They are accessed by opening the appropriate door and removing the fuse box panel lid.

3.1a Under hood fuse box

Chevrolet Silverado Chassis electrical system _ Under hood fuse box

3.1b Driver’s side fuse box

Chevrolet Silverado Chassis electrical system _ Driver's side fuse box

3.1c Passenger’s side fuse box

Chevrolet Silverado Chassis electrical system _ Passenger's side fuse box

2. Several sizes of fuses are employed in the fuse blocks. There are small, medium and large sizes of the same design, all with the same blade terminal design. The medium and large fuses can be removed with your fingers, but the small fuses require the use of pliers or the small plastic fuse-puller tool found in most fuse boxes.

3. If an electrical component fails, always check the fuse first. The best way to check the fuses is with a test light. Check for power at the exposed terminal tips of each fuse. If power is present at one side of the fuse but not the other, the fuse is blown. A blown fuse can also be identified by visually inspecting it (see illustration).

3.3 When a fuse blows, the element between the terminal’s melts

Chevrolet Silverado Chassis electrical system _ When a fuse blows, the element between the terminal’s melts

4. Be sure to replace blown fuses with the correct type. Fuses (of the same physical size) of different ratings may be physically interchangeable, but only fuses of the proper rating should be used. Replacing a fuse with one of a higher or lower value than specified is not recommended. Each electrical circuit needs a specific amount of protection. The amperage value of each fuse is molded into the top of the fuse body.

Warning: Avoid using discount store fuses. GM has a service bulletin regarding how to spot these fuses. The bulletin number is 07-08­45-002 Aftermarket fuses in GM vehicles.»

Note: If the replacement fuse immediately fails, don’t replace it again until the cause of the problem is isolated and corrected. In most cases, this will be a short circuit in the wiring caused by a broken or deteriorated wire.

Fusible links

5. On these models, large, high-amperage fuses are used instead of traditional fusible links. They are located in the under-hood fuse/ relay box.

  • Pages

    open all | close all