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2002 Mack Ch 427 6-4 codes Help

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I have a 2002 Mack CH 2002 427 it will run fine for weeks and then start stalling not starting until it sits for a while then start and stall lately will not stay running and I can't use the truck. it will show No Info on the dash and also throw 6-4 code  I have cleaned all grounds that I could find. Can the VECM or the VECU cause these problems. Any and all help would great 

Thanks John

Edited by Jomorisn
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I just had to replace the engine ecm on my 99 CH if I remember correctly it gave a 6-4 code. It acted up 1 day then ran fine for a week or so then went to leave 1 day it started and died immediately then never ran until I changed ecm. 

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