Welcome to the Cummins ECM service page. There are many hardware variations of Cummins ECM. We service the Signature 600/ISX CM570, the ISX EGR CM870, the ISX CM871 and Celect ECMs. If you have another Cummins ECM not listed give us a call. Over the years I have serviced other Cummins ECM types not common enough to list. Please click one of the two links below to proceed.