(Used) 2010 GM 4.8L, ENGINE ECM- Serial Number: 86AAF7K20203W6G5, Part Number: 12633238 Family Number: AGMXE04.8581, Displacement: 4.8L, Horsepower: 285, ESN: 52220H177, Engine Part Number: 52H0D285A Engine: P-36062 Truck: 512621 For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 2192