TRANSMISSION IDENTIFICATION TRANSMISSION TO ASSEMBLY CODES Note Transmission identification can be located in one of three positions on the transmission A Identifioation plate on side of case B Stamping number on governor cover C Ink stamped on bell housing 1988 ME9 4 SPEED A T l BCRH 3 33 RATIO 1989 I ME9 4 SPEED A T QCDH 3 33 RATIO 9YAH 3 33 RATIO OCHH 3 33 RATIO I 1990 ME9 4 SPEED A T OYKH 3 33 RATIO OYDH 3 33 RATIO OCHH 3 33 RATIO 1991 ME9 4 SPEED A T 1YDH 3 33 RATIO 1WSH 3 06 RATIO 1992 ME9 4 SPEED A T 2WWH 3 06 RATIO I I 1993 GENERAL MOTORS SERVICE PAR TS OPERATIONS BUlCI 45W 2 93 4 5 4 000