TRANSMISSION IDENTIFICATION CON D INCLUDING AXLE RATIO TRANSMISSION TO ASSEMBLY CODES Note Transmission identification can be located in one of three positions on the I transmission A Identification plate on side of case B Stamping number on governor cover C Ink stamped on bell housing 1991 ME9 4 SPD A T THM440T4 1wMH 2 84 RATIO IWPH 2 97 RATIO 1992 M13 4 SPD A T THM 4T6O E 2YMW 2 84 RATIO 2YZW 3 06 RATIO 2BTW 2 97 RATIO 2CLW 2 84 RATIO 2CSW 3 06 RATIO 2CXW 2 97 RATIO 1992 GENERAL MOTORS SERVICE PARTS OPERATlONS BUICK 44H 4 000 4 4 4 92