Question about 1991 Chevrolet Silverado 2500

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I need to find the wiring that goes to the oil pressure sensor on a 1993 Chevrolet Silverado diesel pickup that has been converted to gas. Where do I find a schematic of this? When the pickup was converted to gas someone clipped a lot of wires in the engine compartment. Now we are attempting to put it back together as a gas. We have traced all the wires except the oil sensor. Thanks.

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  • vbinfet Aug 03, 2009

    Thanks. No longer need your help. Got info from a professional mechanic locally.

  • yadayada
    yadayada May 11, 2010

    did you loose it? it will ber near the sensor.

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  • Chevrolet Master
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Take all remaining wires and "flash" them to a good ground with the ignition on. when you find the one that makes the oil pressure gauge move, that's your wire. Do not make a solid connection when doing this or you can damage systems served by the "wrong" wires. First look for the wire near the sending unit location...generally the wire leads coming out of the main harness are not very long. The problem with most schematics is that often they get the color wrong or they tell you a wire is there but don't say where "where" is. Also, if a fuse blows when flashing the wires, make a note of what wire went to that fuse (system) it will help with later wiring.

Posted on Aug 02, 2009

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