0 GM/Chev (HD) Other, , ECMs, Fits to: , (Used) GM/Chev (HD), ENGINE PCM- Part Number: 12597116, Extension: 86YKYW926354LCVD, Serial Number: 12589161, Serv. Number: 12602801, 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# 12589161, Casting# 12589161, Part# 12597116