peterbilt 387 with ISX engine shuts down on adn off

[alborz]

Thank you all for your comments.
Today before I crank the engine I unplugged the wires going through the firewall on drive side. I checked one by one, sprayed wire/ electronic cleaner. And tapped to the head of ECM as Rawze recommended. Then started the truck.

Unlike yesterday it never shut down on its own.
I Unplugged camshaft/ crankshaft sensors. It ran with either of them plugged in but not without the two.
I took off all the fuses and sprayed cleaner. and wiggled wires
Still engine light is on and can’t retrieve the codes.