(Used) 2008 GM/Chev (HD) 4.8, ENGINE ECM- ECM Model: E38, Part Number: 12617630, Serial Number: 86YPMUK1809392PM, Serv. Number: 12612384, Engine Information- Engine Stock #P-66131, Displacement: 4.8L, Horsepower: 230, 1 Rectangular Plug with 73 Pins, 1 Rectangular Plug with 80 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