GMC and Chevy Duramax LB7 6.6 Diesel Common Issues and Problems. If you have a 2001-2004 Duramax 6.6 LB7 diesel pickup or are looking to buy one, here are some common issues and problems we have run into in our shop. Over the years these trucks have been really good performers, but they do have some common problems that we see over and over again. It is disappointing cummins has not supplied a decent method for troubleshooting M11 injectors. I have a tool that I use on the N14's, that allows me to remotely disconnect each injector at any time (without damage to the injector or ECM) while engine is operating in any conditions. It will pick up any faulty injectors easily.
Welcome to the new website of Shiyan Dongsu Industry Trade Co.,Limited , is located in DONGFENG commercial vehicle production base, shiyan city ,Hubei province, we mainly deal with CUMMINS 4B3.9, 6B5.9, 6C8.3, 6L8.9, ISBe, ISLe, NT855, M11, ISM, KT19, and KT38 engines and parts which are produced by Cummins Co., Ltd,and Renault series parts .