(Used) 2006 GM/Chev(HD), ENGINE ECM- Part Number: 12597116, Serial Number: 86YKYW926212J19A, Serv: 12602801, HDW Number: 12589161, Engine: P-33299, Displacement: 8.1L, Horsepower: 320, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921