TRANSMISSION IDENTIFICATION Continued Note Transmission Identification can be located in one of three positions on the transmission wai A Identification label on side of case B Stamping number on governor cover G Ink stamped on bell housing 1991 TRANSMISSION T0 ASSEMBLY CODES MT1 4 SPD A T MDB 4 SPD A T M20 4 SPD MAN 4LBOE HVDRAMATIC THMTOOH4 HVDRAMATIC HVDRAMATIC 11AB 11AC 11BA 11BB ICAM ICBM 1CFM 1CHM 1CMV ICNV IKNV 1MJU 11BJ 11BM 11BN 1ABP 1CJM 1KAM 1KCM 1KLM 1MJV 1VFV IVHV IACP 1ADP 1BAP 1BBP IKRM 1LBM 1LCM 1LDM IBJP 1BMP 1BNP 1CAP 1LFM 1MJM 1MNM 1MSM 1CBP 1CRP 1CKP IDBF 1RAM 15AM ISHM 1TLM MG5 5 SPD MAN IDCP 1DDN 1DFP 10KP 1WAM 1WBM IWCM HVDRAMATIC 1DLP IDNP 1DPP 1DRP IDSF 1UMU 1UNU MV2 5 SPD MAN HVDRAMATIC 1UPU IUFIU FORMERLV GETRAG nl 1990 GENERAL MOTORS SERVICE PARTS OPERAT 0NS LT TRUCK 5ZR 4 000 4 B REV 9 90