hotmod660

This truck is really getting to me. The last time it was in the dealership because of a no start. It throw a code of po148. They installed 6 new injectors, said that two or more where leaking. Yesterday it started to idle rough and was hard to start. Today on my way home the CEL came on. So i did the key trick to retrieve any codes. It just said done after a few seconds. So does cummings send new replacement injectors or rebuilt ones?? My second question is, With my CEL on why isn't showing me what code tripped the light?