2006 Allison 1000RDS, Truck Delivery, Transmission ECMs, Fits to: Chevrolet C5500, (Used) 2006 Allison (AT), TRANSMISSION ECM- ECM Model: A40, Part Number: 29544772, Serial Number: BK4772N0604583DP, 12 Volts, Transmission Model: 1000RDS, Serial Number: 6310621115, Plug Pins: 80 Pins Plug Rectangular, Minor Damage!! 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# BK4772N0604583DP, Casting# BK4772N0604583DP, Truck Year 2006 1GBE5C1296F423016