TRANSMISSION IDENTIFICATION CONT D INCLUDING AXLE RATIO TRANSMISSION TO ASSEMBLY CODES Note Transmission identification can be located in one of three positions on the transmission A Identification plate on side of case B Stamping number on governor cover C Ink stamped on bell housing 1990 ME9 4 SPD A T MD9 3 SPD A T THM440T4 THM125C OBAH 2 73 RATIO OBYC 2 73 RATIO OBDH 2 73 RATIO OBZC 2 73 RATIO OBFH 3 06 RATIO OPDC 2 84 RATIO OWDH 2 73 RATIO ORUC 2 84 RATIO OWFH 2 73 RATIO OWHH 3 06 RATIO 1991 ME9 4 SPD A T MD9 3 SPD A T THM440T4 THM125C 1WDH 2 73 RATIO 1PDC 2 84 RATIO 1WFH 2 73 RATIO 1BYC 2 73 RATIO 1WHH 3 06 RATIO 1BZC 2 73 RATIO i 1992 GENERAL MOTORS SERVICE PARTS OPERATlONS OLDSMOBlLE 32A Y 1 1 92 4 7 4 000