Chrysler is recalling certain 2019-2020 Ram 3500, 4500 and 5500 cab chassis vehicles built with a Cummins 6.7L high output diesel engine. 

This bulletin applies to 2019 and 2020 Ram 1500, 3500 and 4500/5500 vehicles. The bulletin involves inspecting the Julian date on the throttle body and possibly replacing it. 

This bulletin applies to 2014-2015 Ram 2500 and 3500 trucks equipped with a 6.7L Cummins diesel engine. A defect may be present with the DEF (diesel exhaust fluid) level sensor.