(Used) 2007 GM/Chev (HD), ECM- Serial Number: 86YKYW926355LGCE Part Number: 12597116 Model: YKYW HDW Number: 12589161 Serv Number: 12602801 For more information about this item,give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 919 W PULASKI HWY ELKTON, MD 21921