Electronics, , 2005 ALLISON 4500RDS, Transmission ECM, (GOOD USED/TESTED) 2005 ALLISON 4500RDS TRANSMISSION TCM (TRANSMISSION CONTROL MODULE) MODEL # WT3ECU911A, BASE ECU PART # 29541227, CUSTOMER P/N 180MS517M31, GOV RPM 1950, TCM SERIAL # 1A353726, STOCK # ECM0193