(Used) 2016 GM/Chevy (HD) 6.0L ENGINE ECM - Part Number: 12658777, Serial Number: 86ABVNK26287R1AN, Service Number: 12633238, Warranty Security Tag: 177953, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921