2006 GM/Chev (HD) 6.6L, Truck Delivery, ECMs, Fits to: Chevrolet C5500, (Used) 2005 GM/Chev (HD) 6.6L, ENGINE ECM- Part Number: 12606127, Serial Number: 86YNAYJ60401077, Engine information- Displacement: 6.6L, Stock #P-57534, 1 Rectangular Plug with 96 Pins, 1 Rectangular Plug with 58 Pins, 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# 86YNAYJ60401077, Casting# 86YNAYJ60401077, Truck Year 2006 1GBE5C1296F423016