First thought it was a loose connection on the battery, tapped it a bit an it tried to crank a bit, tired to jump off and nothing after that. Battery is fine, starter is fine, at wit's end. Everything comes on just won't start.Also, replaced teminials and all that have to do with battery and nothing different. Any ideas?

 

does it click when you say it stops, or is there no noise at all? if its a clicking sound, then you need a new starter/selenoid

 

Might wanna check your fuses, might get surprised. When i first got my truck the same EXACT thing happend...Turned out to be a fuse that blew. It was doing exactly as you say. Forgot what fuse it was tho..