2005 Allison 2400, Truck Delivery, Transmission ECMs, Fits to: GMC C7500, (Used) 2005 GMC C7500, ECU-TCM- Make: Allison, Trans Model: 2400, Part Number: 29542725, TSN: 29542631, 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# 29542631, Casting# 29542631, Truck Year 2005 1GDJ7C1C85F900297