V TX05 04 9 RPO DEFINITIONS LH6 6 2L DIESEL VB LU 8 1L DIESEL V8 I ms mn va LI9 7 4L V8 MTI AUTOMATIC TRANSMISSION 4 SPEED M10 MANUALTRANSMISSION 4 SPEED si 6 t 7 1990 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK BZR 5 000 GROUP s sz 9 90