(Used) 2006 GM/Chev (HD) 8.1L, ENGINE ECM-ECM Model: Part Number: 12613264 Serial Number: 86YPUHR171980062, Serv. No: 12602801, HW: 12589161, Engine Information- Displacement: 8.1L, Horsepower: 330, Plug pins: 2 Rectangular plugs with 80 pins each!! Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921