2008 GM/Chev (HD) 4L80E, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W42, (Used) 2008 GM/Chev (HD) (AT), TRANSMISSION ECM- ECM Model: YNXS, Part Number: 24239926, Serial Number: BKYNXSK180861500, Serv. Number: 242423918086, Transmission information- Model: 4L80-E, Part Number: 24208421, 1 Rectangular Plug with 49 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# BKYNXSK180861500, Casting# BKYNXSK180861500, Truck Year 2008 5B4KPD28483434842