Turned engine off and 20 minutes later he won't start. Batteries good everything works, when I turn the key nothing.no klick ,don't turn over, nothing. any advice?? never had problems. 2001 Dually

Sounds like a starter issue. Check your connections and starter cable. Might have to pull it to bench test it.

Had the exact same thing happen to me, ended up being the starter. The bolts holding it together loosened and caused the motor to bind and burned a couple of segments of armature out.

GB

How about a common failure like starter contacts? http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/26-engine-systems/124-starter-contact-replacement

Also how about the 140 amp fuse in the power dist. box under the hood, or the starter relay?

Thanks guys , was a lose starter cable,

alright glad to hear you up and running. also glad it turned out simple and easy once found.

easy fix!