GM Full Size Vans 1987-1997 Repair Guide



See Figures 1 through 4

The fuses are located on a fuse block, they provide increased circuit protection and reliability. The fuse block is located under the left side of the instrument panel and steering column. The fuse block should be visible from underneath the steering column, near the pedal bracket. If the block is not visible, check for a removable compartment door or trim panel which may be used on later models to hide the block. On 1996-97 models, there is also a fuse/relay panel mounted underhood.

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Fig. Fig. 1: If the fuse panel has a concealed cover, unscrew or unclip the retainer and remove the cover:

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Fig. Fig. 2: Some fuse panel covers contain a fuse puller, spare fuses and a diagram of the fuse locations:

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Fig. Fig. 3: Remove the fuse puller from the panel cover ...

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Fig. Fig. 4: ... then grasp the fuse to be removed with the puller and disengage it from the fuse panel

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.


  1. Locate the fuse for the circuit in question.

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

  1. Check the fuse by pulling it from the fuse block and observing the element. If it is broken, install a replacement fuse the same amperage rating. If the fuse blows again, check the circuit for a short to ground or faulty device in the circuit protected by the fuse.
  3. Continuity can also be checked with the fuse installed in the fuse block with the use of a test light connected across the 2 test points on the end of the fuse. If the test light lights, replace the fuse. Check the circuit for a short to ground or faulty device in the circuit protected by the fuse.