2008 GM/Chev (HD) Other, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W42, (Used) 2008 GM/Chev (HD), TRANSMISSION ECM, Model: YNXZ, Part Number: 24239926, Serial Number: BKYNXZK181011920, Serv. Number: 242423918101, 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# BKYNXZK181011920, Casting# BKYNXZK181011920, Truck Year 2008 5B4KPD28383435139