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Did you check the ECM fuse again to see if it is still good?
Once it is bad, it can go bad again as soon as you try to restart unless the source of the issue is resolved.
You may need to do DieselPro gremlin remover.
It should be in the FAQ.
 

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Make sure the security system has not been tripped.
Make sure all the grounds at the back of the pass. side head are good.
Make sure chassis is well grounded, LP gets ground from the frame.
On the back center of the engine are a bunch of connectors.
One has 3 wires, ORN, GREY, and TAN, it's the OPS circuit.
Make sure the ORN wire has 12v. all the time, +BATT. from the ECM-B fuse.
PINK wire on the PMD is from the ECM-I fuse and hot with key ON.
 
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Discussion Starter #23
Did you check the ECM fuse again to see if it is still good?
Once it is bad, it can go bad again as soon as you try to restart unless the source of the issue is resolved.
You may need to do DieselPro gremlin remover.
It should be in the FAQ.
ECM fuse is still good. All I've done is unplug my pmd harness and plugged it back in. That's it. Nothings changed . Found a new ground spot for the pmd harness as well. Never did anything. I get fuel to the t. Not past the injection pump. Dont understand. It all worked before I unplugged the pmd and then when I plugged back in. Nothing works
 

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Why did you unplug the PMD?
 

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Are you trying to plug in the PMD outside the engine bay?
I am trying to understand what you are trying to do instead of bits and pieces.
You have to realize that we are not psychic so you need to give a clear picture.
 

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Discussion Starter #27
What i was doing was unplugging the old pmd from the IP, later found out the new pmd I had was shot, plugged the pmd cable back into the old pmd on the injection pump and then nothing worked lift pump included
 

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Sounds like something cause a short.
Did you open the intake to plug the cable back to the old PMD?
It is difficult to do it with the intake manifold on.
Who knows if you bend a pin or ruin the IP harness in the process of doing it.

Also, when you plug in a new DOA PMD, did you make sure you put it in the correct direction?
Did you try to put the new PMD on an extension?
 

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Discussion Starter #29
Yes I put a new pmd extension on when I wanted to use my new pmd. But I used both harness on the old pmd to try to make it work. And I used a mirror and from what I can see I never damaged the pins in the plug ins. No intake removed. Just cant get diesel to the injection pump now. Trying a new lift pump to start
 

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There is a bad fuse somewhere.
 

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I've check every fuse, and replaced my fuel pump relay. I think its gunna go to gm I'm at a loss
The OPS is within the circuit. Try replacing the OPS and see if things improve. ( AC/Delco Brand only)
 

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There is nobody at GM who knows about this truck, anymore.
Which means they are going to charge you an arm and a leg without any resolution.

Try to find a diesel shop in your area that knows about this.
It may be something easy but the most obvious thing can be the most difficult to figure out.
 
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