2008 5.9 deisel motor 3500 it starts up great but at e5mph power shuts off ompldtely what woulx cause this

At around 35mph my 5.9 3500 Dodge Deisel completly looses power and motor shuts off why???

Try checking your first post.

If I knew this anwser I would not be asking you guru. Can you help me please?

With almost no information all we can do is WAG it. The more information your give us, the better the answers will be. Is the check engine light on?

I know your post is old my 2006 3500 diesel has both abs light on and brake light. On but at whatever speed the transmission light comes on and i lose all power and try safely to get off freeway or shoulder even the dealer cant trouble shoot this. ??? Did you ever get an answer.