GMO4 329U I RPO DEFINITIONS I LHO ENG NE 3 1L 3 1T V6 LN2 ENGINE GAS 4 CYL 2 2L 2 2 4 MFI MD9 TRANSMISSIONAUTOMATIC 3 SPEED THMI25C 3T40 r V I T 1993 GENERAL MOTORS SERVICE PARTS OPEFIAT ONS CHEVROLET I8J 2 93 4 39 4 000 GROUP