Hello everyone. I'm ;looking at buying a 2011 3500 with 156xxx mi on it. all stock, no deletes or mods. Im told the DEF sensors and NOX sensors have been replaced, and the rear end (Dually) has been completely gone through. I will have a good Diesel mechanic check it out but what should I be looking for as possible issues? is there anything I can do proactively to prevent them?
Thanks in advance!
Thanks in advance!