94 GMC Vandura 3500, bad ground?

CraigSmith1967

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I have a 94 GMC Vandura box truck. It has the 4.3L v-6 in it. Started missing and dying then finally went kaputz. Wasn't getting fuel so changed things in order. Relay, Fuel Pump, ICM, ECM, etc. Still same issue.

Have power to injectors but NOID light doesn't come on. Tells me it's a bad ground. But where is that circuit grounded?

Headlights also quit working, I assume same ground.

Truck has 225k miles and frame and underbody rusted but solid.

I replaced the engine to body ground.

If I use a shot of ether or dump gas down the TBI it fires right up.

Thoughts? Diagram?
 
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