GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide

Fuse Block and Fuses


See Figures 1, 2 and 3

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Fig. Fig. 1: Example of a common fuse block

If the panel is not visible, check for a removable compartment door or trim panel which may used on later models to hide the block. This panel is usually located on the left end of the instrument panel. The convenience center is located just below the instrument panel on the drivers side. It contains individual relays such as the seat belt and ignition key alarm, and flasher. On newer model vehicles there is an underhood fuse/relay center contains both mini and maxi fuses, as well as some relays. If a fuse blows, the cause should be investigated and corrected before the installation of a new fuse. This, however, is easier to say than to do. Because each fuse protects a limited number of components, your job is narrowed down somewhat. Begin your investigation by looking for obvious fraying, loose connections, breaks in insulation, etc. Use the techniques outlined at the beginning of this section. Electrical problems are almost always a real headache to solve, but if you are patient and persistent, and approach the problem logically (that is, don't start replacing electrical components randomly), you will eventually find the solution. Each fuse block uses miniature fuses (normally plug-in blade terminal-type for these vehicles) which are designed for increased circuit protection and greater reliability. The compact plug-in or blade terminal design allows for fingertip removal and replacement. Although most fuses are interchangeable in size, the amperage values are not. Should you install a fuse with too high a value, damaging current could be allowed to destroy the component you were attempting to protect by using a fuse in the first place. The plug-in type fuses have a volt number molded on them and are color coded for easy identification. Be sure to only replace a fuse with the proper amperage rated substitute. A blown fuse can easily be checked by visual inspection or by continuity checking.

A special heavy duty turn signal flasher is required to properly operate the turn signals when a trailer's lights are connected to the system.

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Fig. Fig. 2: The convenience center is usually located just below the instrument panel on the driver's side

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Fig. Fig. 3: Common swing-down type convenience center


See Figures 4, 5 and 6

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Fig. Fig. 4: Remove the fuse panel cover or trim panel (note the spare fuses and fuse puller on the cover)

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Fig. Fig. 5: Removing a fuse using the fuse puller

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Fig. Fig. 6: Visual examination will reveal a blown fuse, but it should not be replaced until repairs are made

  1. Pull the fuse from the fuse block.
  3. Inspect the fuse element (through the clear plastic body) to the blade terminal for defects.

When replacing the fuse, DO NOT use one of a higher amperage.

  1. Once repairs are completed, install a replacement fuse of the same amperage.