Have you checked your ignition relay? Also check the ground for proper grounding. If the ground is not correct then you will not start. You can also try running extra ground wire from the starter to the frame of the vehicle sometimes that will also cure the issue. I would check the fuse and relay first before anything else though.
Unplug the battery and try a reset. If you have a scan tool you can reset it then. If nothing is working and it is giving that code, then you have to replace the ECM. A no start and you have checked everything that I have recommended its a problem internally with the ECM. The are some computer guys out there that can solder those things and get them to work temporarly. If you are really at a loss though I would recommend calling in a Mobile Mechanic, you can get a ECM for fairly cheap that is already programmed. What was the code?
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all that has been checked. Error code says there is a short in the ecm. found no evidence of a short inside ecm.
I'm at a loss
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