I joined to see if anyone has had problems with the Ecodiesel. I have a 2015 Big Horn , 4x4 ,1500 Ecodiesel. I have only put about 8000 miles on since 4/21/2015 , its my retirement vehicle. So far I have averaged 26 MPG.. I am interested in adding the airbag suspension , but my dealer told me that I have to have it added at the factory, and can not be added after the fact.. Does anyone know of an aftermarket airbag suspension that I can add to it now? Thanks.