I MWO3 031 RPO DEFINITIONS I JL9 BRAKE SYSTEM POWER FRONT AND REAR DISC ANTILOCK J65 BRAKE SYSTEM POWER FRONT AND REAR DISC LHO ENGINE 3 1L 3 1T V6 I L27 ENGINE 3 8L SF V6 M13 TRANSMISSION AUTOMAT C 4 SPEED 4T60 E NB2 EMISSION SYSTEM CALIFORNIA REQUIREMENTS i 1993 GENERAL MOTORS SERVICE PARTS OPERAT ONS BU CK 45W 3 000 GROUP 3 18 2 93