2010 GM/Chev (HD) 4L80E, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W42, (Used) 2009 GM/Chev (HD) (AT), TRANSMISSION ECM- ECM Model: YNYS, Serial Number: BKYNYSK000210006, Part Number: 24240449, Serv. Number: 242423910021, 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# BKYNYSK000210006, Casting# BKYNYSK000210006, Truck Year 2010 5B4KPD277A3439787