My chevrolet Silverado 2004 pick up diesel engine...

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EDU mean  Electronic Distribution Unit there is a 25 amp fuse between starter and fpump that is a 25 and keeps blowing
to solve the problem replace the fuse 
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Engineer mohammad

Dear Sir 
Welcome, and thank you for trusting us
good , you must check the wire from fuse to fuel pump and  starter 
I hope my answer was helpful, please let me know if you have any follow up questions. If you feel I've answered your question already, please rate my answer from top of the page. Your feedback helps to ensure only the best experts are available to help you.
You can also ask questions of our other specialists in the areas of nutrition, therapists, IT specialists, medical doctors, and many more.
We are privileged to communicate with you, and you can always consult many experts on Jawabkom like Doctors, Nutritionists, and Engineers
Kind Regards
Engineer mohammad