2014 Duramax Problems. Come join the discussion about modifications, towing, classifieds,. These problems are usually associated with the fuel injector, fuel injector harness wiring, water pump, engine overheatingand blown head gaskets, etc.
These problems are usually associated with the fuel injector, fuel injector harness wiring, water pump, engine overheatingand blown head gaskets, etc. By 2011, the duramax lineup had already seen four major revisions, starting out with the lb7 in ‘01, moving to the lly in ’04½, the lbz in ‘06 and the lmm in ‘07½.