0 GM/Chev (HD) Other, , ECMs, Fits to: , (Used) GM, ECM- Model: YKYW, Service Number: 12602801, HDW Number: 12589161, Serial Number: 86YKYW926355LGCC, Part Number: 12597116, 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# 86YKYW926355LGCC, Casting# 86YKYW926355LGCC, Part# 12597116