(Used) 2009 GM 4.8L ENGINE ECM - Part Number: 12629209 Serial Number: 86YRUCK1923276R2, Service Number: 12625455, Family Number: 8GMXE0300998, Displacement: 4.8L, Horsepower: 285, ESN: 52119M088, Part Number: 52G8D285A, Engine: P45432, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921