n GNI5 2 1 11 5 542 WASHER DIFF P GR THR 91 93 B Y01 2 559291 5 542 WASHER DIFF P GR THR 91 93 B Y04 2 3984818 12 N S GEAR PINION PART OF 4 V 13 N S SPRING PRELOAD PART OF 4 RPO DEFINITIONS B4U SPORTS PERFORMANCE PACKAGE GM8 AXLE REAR 2 56 RATIO V GU4 AXLE REAR 3 08 RATIO Y I GU5 AXLE REAR 3 23 RATIO GU6 AXLE REAR 3 42 RATIO I GSO AXLE REAR POSITRACT ON LIMITED SLIP V JA1 BRAKE SYSTEM LIGHT WEIGHT DISC DRUM JA2 BRAKE SYSTEM HEAVY WEIGHT D SC DRUM JE1 BRAKE SYSTEM EUROPE EXPORT JM4 BRAKE SYSTEM POWER FRONT DISC REAR DRUM ANT LOCK CAST IRON Y01 7 50 DIAMETER RING GEAR SAG NAW REAR AXLE Y04 8 50 DIAMETER RING GEAR SAGINAW REAR AXLE 9C6 TAXI CAB I 3 J j 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17B 5 000 GROUP 5 12 8 92