2011 Allison 1000HS, TRUCK DELIVERY, Transmission ECMs, Fits to: Workhorse Custom Chassis W62, (Used) 2011 Allison (AT), TRANSMISSION ECM- ECM Model: A51, Part Number: 29545536, Serial Number: BK5536N11100037D, Transmission information- Model: 1000HS, Serial Number: 6311056030, 1 Rectangular Plug with 80 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# BK5536N11100037D, Casting# BK5536N11100037D, Truck Year 2011 5B4LFG2E4B3445023