(Used) 2011 GM/Chev (HD) 6.0L, ENGINE ECM- ECM Model: E78, Part Number: 12640466, Serial Number: 86AAUSK011037XB0, Serv. Number: 12616532, Engine Information- Engine Stock #P-73845, Family Number: BGMXE06.0584, Displacement: 6.0L, Horsepower: 360, ECS: SFI, HO2S, TWC, 1 Rectangular Plug with 55 Pins, 1 Rectangular Plug with 73 Pins, 1 Rectangular Plug with 65 Pins, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921