(Used) 2000 Workhorse GM/Chevy (HD) 4.8L ENGINE ECM - Part Number: 12653852, Serial Number: 86ABHBK22206P652 Service Number: 12633238, Warranty Security Tag: 178165, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921