0 GM/Chev (HD) 6.0L, , ECMs, Fits to: , (Used) GM/Chevy (HD) 6.0L ENGINE ECM - Part Number: 12589161, Serial Number: 89YPUHR171990418, Service Number: 12602801, Warranty Security Tag: 178129, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# 86YPUHR171990418, Part# 12589161,