Q: What protects the electrical circuits of Chevrolet Blazer,S10,GMC Jimmy and Sonoma?
A: The electrical circuits of the vehicle are protected by a combination of fuses, circuit breakers, and fusible links. The fuse block, which contains miniaturized fuses with blade terminal design, is located under a cover on the left end of the instrument panel. Each fuse is designed to protect a specific circuit, and the fuse panel itself identifies the various circuits. To check for a blown fuse, use a test light to check for power at the exposed terminal tips of each fuse. If power is present on one side of the fuse but not the other, the fuse is blown. It is important to replace blown fuses with the correct type, as fuses of different ratings are physically interchangeable but only fuses of the proper rating should be used. The amperage value of each fuse is molded into the fuse body. If a replacement fuse fails immediately, do not replace it again until the cause of the problem, such as a short circuit in the wiring caused by a broken or deteriorated wire, is isolated and corrected.