F350 6.0 2003 no start no crank
Hey guys I really need quick help, bosses truck ! Long story short, his son had it tuned by someone and boss wants it back stock ! I found a tune tried to install and it failed, used credits but failed. Now no start no crank, fuel pumps are not priming nothing but dash lights. I noticed last night when I moved it, when I turned key nothing happened, 2nd time it cranked. Also it will not let me scan, says may not be compatible or all modules are not responding. HELP PLEASE
