2004 GM/Chev (HD) 6.6L DURAMAX, , ECMs, Fits to: Other Other, (Used) 2004, 2005 GM/Chev (HD) 6.6L DURAMAX FICM LLY, ENGNE ECM- 8973037513 Part Number: 8973037511, Serial Number: 0353204040616, Reference images for condition. 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# 0353204040616, Casting# 0353204040616, Truck Year 2004