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1994 Chevrolet K1500 Questions & Answers
1994 Silverado died and has no spark or fuel.
Does your check engine light illuminate in the run position, key on engine off? It should do a "bulb check" by illuminating key on engine off. If it does, now would be a good time to scan it for trouble codes. If it does not illuminate, and you cannot communicate with the ecm/pcm with a scan tool, you need to start by locating a wiring diagram of your ecm, or pcm, whichever it contains. Once you've located a wiring diagram its time to find your ecm/pcm, remove the electrical connector and start checking your powers and grounds to the ecm/pcm. Use a test light that has a significant amp draw to test your power feeds, an ohm meter can deceive you by showing 12v, but that wire may be cracked and full of corrosion, preventing sufficient current flow. You can use this same method to test the integrity of your ecm/pcm grounds by connecting the end of your test light to positive battery voltage, and touching the tip to the ground pins of the connector. If you have good power and grounds, the fault lies within the ecm/pcm.
I have recently bought a
This
wiring diagram of the 4X4 circuit might help.
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Diagram of the fuse box
You will find the fuse box diagram on the the inside of the fusebox cover. It's also available at this link: https://www.autogenius.info/gmc-sierra-mk1-1993-1994-fuse-box-diagram/
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