(Used) 2006 GM 6.6L, ECM- Part Number: 12613264, Serial Number: 86YPUHR172180651, Serv Number: 12602801, HDW Number: 12589161, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921