(Used) 2008 GM/Chev (HD) V8, 4.8L Gas, ENGINE ECM - Part Number: 12633238, Serial Number: 86AAF7K28265VMH1, Displacement: 4.8L, Horsepower: 285, ESN: 52121J061, Engine: P-46820, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921