TX05 1005 V RPO DEFINITIONS f GT5 AXLE REAR 4 1O RATIO I GU5 AXLE REAR 3 23 RATIO GU6 AXLE REAR 3 42 RATIO G80 AXLE REAR POS TRACT ON L MITED SLIP JA4 BRAKE SYSTEM D SC DRUM REAR ANTI LOCK JM4 BRAKE SYSTEM POWER FRONT D SC REAR DRUM ANTI LOCK CAST IRON LU2 ENGINE 4 3B 4 3B V6 HI OUTPUT Y03 7 625 DIAMETER RING GEAR SAGINAW REAR AXLE 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 53M 8 92 5 7 5 000 GROUP I