2009 GM/Chev (HD) 4L80, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W42, (Used) 2008 GM/Chev (HD) (AT), TRANSMISSION ECM- ECM Model: YNYS, Serial Number: BKYNYSK191560160, Part Number: 24240449, Model: 4L80, Part Number: 24208421, Pin Plug: 49 Pins, Rectangular Plug 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# BKYNYSK151960160, Truck Year 2009, VIN 5B4JPD28993437720 5B4JPD28993437720