2009 GM/Chev (HD) 4L80E, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W42, (Used) 2008 GM/Chev (HD) (AT), TRANSMISSION ECM- ECM Model: YNYS, Serial Number: BKYNYSK091460176, Part Number: 24240449, Serv. Number: 242423919146, 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# BKYNYSK091460176, Casting# BKYNYSK091460176, Truck Year 2009 5B4JPD28193438005