(Used) 2010 GM/Chev(HD) V8 4.8L Gas, ECM- Serial Number: 86AAKAK201273D87, Part Number: 12635858, Serv Number: 12633238, Model: AAKA, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921