The refreshed Ram 2500 and 3500 HD will debut later this year with an upgraded Cummins diesel engine
According to the lawsuit, there are more than 23,600 owners of the affected Cummins-powered trucks in Arizona
The lawsuit claims 2016-2019 Titan XD owners are entitled to millions of dollars in compensation
The class action alleges vehicles emit illegal levels of emissions and often require expensive repairs
Certain Ram 2500 and 3500 vehicles were allegedly equipped with devices to cheat diesel emissions testing
