(Used) 2007 GM 8.1L, ENGINE ECM - Remanufactured, Part Number: 89017749, Serial Number: 86YPUPR172320052, Displacement: 8.1L, Horsepower: 320, Engine: P-46052, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921