0 GM/Chev (HD) Other, , ECMs, Fits to: , (Used) GM, ECM- Model: YPUP, Serial Number: 86YPUPR181570771, 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# 86YPUPR181570771, Casting# 86YPUPR181570771, Part# 89017749