TRANSMISSION IDENTIFICATION CODE 1984 1985 MD8 4 SPD A T THM7OO MK2 4 SPD M T YQ 5DY 1986 MDB 4 SPD A T MK2 4 SPD M T 6YC GYA DDK 1987 MD8 4 SPD A T MK2 4 SPD M T 7YAM 7YCM 7YDM DDK 1988 MD8 4 SPD A T MK2 4 SPD M T 8YDM DDK 1989 MD8 4 SPD A T ML9 6 SPD M T QYDM NNC NNF 1990 MD8 4 SPD A T ML9 6 SPD M T OYDM DHS DHT DHU 1991 MD8 4 SPD A T ML9 6 SPD M T v 1YDM DOB DCC DCH 1992 MD8 4 SPD A T ML9 SPD M T 2YCM 2YDM DCD DCF DLA 1993 MD8 4 SPD A T ML9 6 SPD M T 3YCM 3YDM 3YAM DHY DHZ DPA DJA 4 DJ8 1993 GENERAL MOTORS SERVICE PARTS OPERATlONS CHEVROLET 14Y 4000 44 383