TRANSMISSION IDENTIFICATION 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 1985 MD9 3 SPD A T THM125C MT2 5 SPD MAN BP 2 84 RATIO 5ZF 3 35 RATIO PN 2 84 RATIO 1986 MD9 3 SPD A T THM125C MT2 5 SPD MAQLQ MY7 5 SPD MAN 6BA 3 18 RATIO ZF NO CODES AVAILABLE 6BP 2 84 RATIO 6PN 2 84 RATIO 1987 MD9 3 SPD A T THM125C IMGI 5 SPD MAE MT2 5 SPD MAN 7PMC 3 18 RATIO RRD 3 61 RATIO 5ZF 3 35 RATIO 7BDC 2 84 RATIO 7PNC 2 84 RATIO 1988 MD9 3 SPD A T THM125C MG1 5 SPD MAE MG2 5 SPD MAN 8PMC 3 18 RATIO BZR 3 61 RATIO ZZJ 3 61 RATIO 8PNC 2 84 RATIO 8KDC 2 84 RATIO 1989 MD9 3 SPD A T b THM125C MG1 5 SPD MAQ MG2 5 SPD MAN b 9PMC 3 18 RATIO 9XMX 3 61 RATIO 9XFX 3 61 RATIO 9PNC 2 84 RATIO 9KDC 2 84 RATIO 9KMC 2 84 RATIO 9KRC 2 84 RATIO Q 1991 GENERALMOTORSSERWCEPARTSOPERAUONS PONUAC 22N 2 91 4 3 4 000