0 GM/Chev (HD) Other, , ECMs, Fits to: , (Used) GM/Chev (HD), ENGINE ECM- Serial Number: 86YPUHR193280520, Part Number: 89017749, 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# 86YPUHR193280520, Casting# 86YPUHR193280520, Part# 89017749