(Used) 2006 GM/Chev (HD) 8.1L, ENGINE ECM - Part Number: 12589161, Serial Number: 86YKYW926207J9JH, Service Number: 12602801, Family Number: 7GMXH08.1503, 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