GM 12004008 Fuse Assembly, Dash Wiring Harness Fuse Block

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The fuse block is located under the instrument panel on the left side of the dashboard. Each fuse protects a specific circuit, labeled on the fuse panel. A broken metal element inside indicates a blown fuse. Use a test light to check for power at both ends of fuses. Replace blown fuses with the correct rating. If a new fuse blows instantly, identify and fix the underlying issue. Some circuits use fusible links, smaller than the protected wire, which need replacement if damaged. Circuit breakers, found in the fuse box, protect components like power windows; some reset automatically, others manually.

To determine if a fuse is blown, remove it from the fuse block and examine the fuse element for a break.

If an electrical component fails, always check the fuse first.

The electrical circuits of the vehicle are protected by a combination of fuses, circuit breakers, and fusible links.

There are different sizes of fuses, including small, medium, and large, all with the same blade terminal design. The medium and large fuses can be removed by hand, but the small fuses require pliers or a fuse-puller tool.