GM PRODUCTION OPTIONS RPO FY LY USE DIV MODEL DIVISIONAL RPO DESCRIPTION CONTINUED PACKAGE Z51 FE7 87 93 SUSPENSION SYSTEM FRONT AND REAR HEAVY DUTY FF4 87 92 ARM TORSION BAR SPRING ADJUST LH FF5 87 92 ARM TORSION BAR 5PRING ADJUST RH FG2 76 87 SHOCK ABSORBER FRONT AND REAR FIRM RIDE FG2 88 89 SHOCK ABSORBER FRONT AND REAR FIRM RIDE FK2 82 85 ANCHOR TORSION BAR REAR 57 DEGREE FK2 87 92 ARM TORSION BAR SPRING ADJUST LH FK3 82 85 ANCHOR TORSION BAR REAR 63 DEGREE FK3 87 92 ARM TORSION BAR SPRING ADJUST RH FPO 86 86 AXLE FRONT 3 62 RATIO FP1 86 86 AXLE FRONT 2 26 RATIO FP3 86 92 TRANSAXLE FINAL DRIVE 2 73 RATIO FP5 87 87 TRANSAXLE FINAL DRIVE 2 95 RATIO FP7 89 B9 TRANSAXLE FINAL DRIVE 3 73 RATIO FP8 86 86 AXLE FRONT 3 29 RATIO FO1 88 91 AXLE FRONT STANDARD RATIO FO2 86 88 AXLE FRONT 3 48 RATIO FO6 89 89 TRANSAXLE FINAL DRIVE 4 12 RATIO FO9 89 93 TRANSAXLE FINAL DRIVE 3 21 RATIO FV1 89 91 TRANSAXLE FINAL DRIVE 3 72 RATIO FW2 82 92 TRANSAXLE FINAL DRIVE 3 06 RATIO FW3 82 84 AXLE FRONT 2 33 RATIO FW4 82 85 AXLE FRONT 3 36 RATIO FW5 82 86 AXLE FRONT 4 10 RATIO FW6 82 85 AXLE FRONT 2 14 RATIO FW7 82 93 TRANSAXLE FINAL DRIVE 3 83 RATIO FW8 84 84 AXLE FRONT 1 99 RATIO FW9 82 91 TRANSAXLE FINAL DRIVE 3 43 RATIO FX2 84 85 AXLE FRONT 2 66 RATIO FX3 85 86 SUSPENSION CONTROL ELECTRONIC DRIVER SELECT FIRM FX3 89 92 RIDE AND HANDLING ELECTRONIC CONTROLLED FX4 85 91 TRANSAXLE FINAL DRIVE 3 35 RATIO FX8 86 93 TRANSAXLE FINAL DRIVE 3 61 RATIO FY1 85 85 AXLE FRONT 2 36 RATIO FY3 88 91 TRANSAXLE FINAL DRIVE 3 79 RATIO FY5 85 88 TRANSAXLE FINAL DRIVE 3 52 RATIO F16 76 93 AXLE FRONT 2 53 RATIO F17 76 93 TRANSAXLE FINAL DRIVE 2 84 RATIO F25 76 87 AXLE FRONT 3 32 RATIO F40 76 91 SU5PENSION HEAVY DUTY FRONT AND REAR F41 76 87 SUSPENSION HEAVY DUTY FRONT AND REAR SPECIAL F41 88 93 SUSPENSION FIRM RIDE HANDLING FRONT AND REAR F44 76 93 CHASSIS EOUIPMENT HEAVY DUTY F45 76 85 AXLE FRONT 2 93 RATIO F47 82 86 AXLE FRONT 2 73 RATIO F51 76 92 ABSORBER HEAVY DUTY SHOCK F57 82 85 AXLE FRONT 3 15 RATIO F58 76 92 BAR HEAVY DUTY FRONT STABILIZER F59 76 91 SHAFT FRONT STABILIZER F6O 76 93 SPRING HEAVY DUTY FRONT F61 82 92 SHAFT REAR STABILIZER F62 76 92 TRANSAXLE FINAL DRIVE 2 39 RATIO F65 76 83 SUSPEN5ION FRONT AIR F66 76 87 SUSPENSION HEAVY DUTY FRONT AIR F67 82 86 AXLE FRONT 3 19 RATIO F68 82 92 TRANSAXLE FINAL DRIVE 3 45 RATIO F71 82 84 SPRING HEAVY DUTY WITH SHOCK ABSORBER F72 82 87 SPRING HEAVY DUTY WITH SHOCK ABSORBER F72 88 89 6 D SPRING HEAVY DUTY F73 88 90 DRIVE ALL WHEEL F75 76 93 TRANSAXLE FINAL DRIVE 3 18 RATIO F77 B2 90 TRANSAXLE FINAL DRIVE 3 73 RATIO F79 82 93 TRANSAXLE FINAL DRIVE 2 97 RATIO GHO 89 91 AXLE REAR 3 54 RATIO GH2 76 88 AXLE REAR 2 29 RATIO GH3 86 89 AXLE REAR 2 77 RATIO GK9 89 92 AXLE REAR 4 63 RATIO GM1 86 91 AXLE REAR 2 59 RATIO GM3 85 91 AXLE REAR 3 45 RATIO j 1990 GENERAL MOTORS SERVICE PARTS C PERATIONS PONT AC 22W REV 6 90 RPO 17