Cummins Electronic Control Module ???
I have an 04 Fleetwood Revolution with a Cummins 8.3 ISC 350hp engine. I took it to an RV shop because I was getting a check engine light. They determined that the ECM was bad. The local Cummins sh...
Forum Discussion
This thread is similar to the issue your are having where the mileage is stored in the ECM but the display is reset to 0. May or may not be the same problem.
