(Used) 2010 GM/Chevy (HD) 4.8L ENGINE ECM- ECM Model: E38, Part Number: 12635858, Serial Number: 86AAKAK201696G5D, Service Number: 12633238, Engine: GM/Chevy (HD) 4.8L, Horsepower: 285, J1 Plug Pins: 73 Pins Plug, J2 Plug Pins: 80 Pins Plug, Warranty Security Tag: 178164, 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