0 GM/Chev (HD) Other, , Transmission ECMs, Fits to: GM/Chev (HD) , (Used) GM/Chevy, TRANSMISSION ECM- Part Number: 24239926, Serial Number: BKYNXSK173520637, Model: YNXS, Service Number: 242423917352, 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# BKYNXSK173520637, Part# 24239926,