Bought new 2016 2500 cummins in august. Engine brake started to not engage when going down hill. And transmission was not shifting down. Dealer did update on the ecm flash. Now I have no engine brake and the transmission lets the truck freewheel unless you apply brakes. This shouldn't be this way. The Transmission should shift down and the engine brake should reduce the use of the brakes 30 to 40%. Is ram going to fix this problem.

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