A TRANSMISSION IDENTIFICATION I Continued I Note Transmission Identification can be located in one of three positions on the transmission A A Identification label on side of case B Stamping number On governor cover C Ink stamped on bell housing A 1990 TRANSMISSION TO ASSEMBLY CODES S M40 3 SPD A T MD8 4 SPD A T M20 4 SPD MAN THM40O HYDRAMATIC THM700R4 HYDRAMATIC HYDRAMATIC ODMA ODPA OFAA OFBA OCAM OCBM 0CCM OCFM YFY YHY YJY YPY OFCA OFHA OFJA OFKA OCHM OCJM 0KAM OKBM OCMY OKNY OMJY OFMA OFNA OFPA OFWA OKCM OLAM OLBM OLCM OHAA OHCA OHFA OHHA OLDM OLFM 0MBM OMJM OHKA OLBA 0LDA OLFA OMNM OMSM ORAM OSAM T ML3 5 SPD MAN OLHA OLJA OLMA OLRA OSHM OTLM OWAM OWBM BORG WARNER OLWA OLXA OLYA OMKA OWCM OMLA OMNA OMPA OMRA GBZ OMSA OMTA OMWA 0MXA OMYA OMZA OSAA 0SBA MY2 5 SPD MAN OSDA OSFA OSHA OSJA HYDRAMATIC MG5 5 SPD MAN OSKA OTAA OTBA OTDA HYDRAMATIC OTFA OTKA OTMA OTNA OUHU OUKU OTRA OCCU OKDU MPW 4 SPD MAN MWI 5 SPD MAN BORG WARNER BORG WARNER GCU GCN FORMERLV GETRAG j 1990 GEN ERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52S j REV 10 90 4 9 4 000