GM PRODUCTION OPTIONS RPO FY LY USE DIV MODEL DIVISIONAL RPO DESCRIPTION NM8 87 93 EMISSION SYSTEM LEADED FUEL EXPORT NN1 76 84 EMISSION SYSTEM DUAL BED MONALITHE CONVERTER NN3 76 84 EMISSION SYSTEM SINGLE BED BEAD CONVERTER NN4 82 91 FUEL TANK 60 GALLON 227 LITER NN5 85 93 EMISSION SYSTEM CALIFORNIA OVERRIDE NN6 82 84 EGR REVERSE FLOW NN7 82 88 LOCK FUEL FILLER DOOR DELETE NN9 82 85 EMISSION SYSTEM LEADED FUEL EXPORT NP5 76 91 STEERING WHEEL LEATHER WRAPPED NP5 88 88 1 F STEERING WHEEL LEATHER WRAPPED USED WITH Z28 RS PACKAGE 1A1 NP5 88 90 2 A STEERING WHEEL SPORT 3 SPOKE LEATHER WRAPPED USED WITH SE Y92 NP5 89 89 1 F STEERING WHEEL LEATHER WRAPPED USED WITH Z28 NP6 85 85 STEERING WHEEL WOOD NP7 82 93 STEERING COLUMN EXPORT NO5 84 89 CAP STEERING WHEEL HORN DELUXE NO5 88 88 6 C CAP STEERING WHEEL HORN DELUXE USED WITH D ELEGANCE V4S TOURING PACKAGE V4X SPECIAL EDITION WA4 NO5 88 89 4 E CAP STEERING WHEEL HORN DELUXE USED WITH RIVIERA T TYPE Y50 NO5 88 89 4 H CAP STEERING WHEEL HORN DELUXE USED WITH T TYPE WE2 NV5 84 91 SHIELD DIFFERENTIAL CARRIER NWJ 88 88 MID YEAR EXHAUST SYSTEM 1988 EFFECTIVE JANUARY 1 1988 NWO 89 90 WHEEL 16X6 5 CAST ALUMINUM NX1 82 89 WHEEL 13X5 5 PAINTED HSLA STEEL NX1 88 88 4 J WHEEL 13X5 5 PAINTED GROOVED PORTED WINDOWS AROUND RIM LIGHT METAL ALLOY NX1 88 88 2 J WHEEL 13X5 5 PAINTED LIGHT METAL ALLOY NX1 88 89 234 N WHEEL 13X5 5 PAINTED LIGHT METAL ALLOY NX8 85 86 WHEEL 14X6 LIGHT METAL ALLOY NY1 76 89 SHIELD FUEL TANK NY2 84 85 STEERING SLOW RATIO NY6 76 84 GEAR POWER STEERING TYPE 605 NY7 76 91 SHIELD TRANSFER CASE NY8 76 84 GEAR POWER STEERING TYPE 800 N04 76 85 LOCK GAS CAP REMOTE CONTROL NO5 76 92 LOCK FUEL FILLER CAP N08 76 93 LOCK FUEL FILLER DOOR REMOTE CONTROL ELECTRIC N09 82 87 LOCK FUEL FILLER DOOR N1O 76 93 EXHAUST SYSTEM DUAL N16 76 83 EMISSION SYSTEM INTERNAL EGR W E P R N18 82 88 COVER SIMULATED WIRE WHEEL LOCKING PACKAGE N23 82 88 FUEL TANK 83 LITER 22 GALLON N24 82 90 WHEEL 15X7 CAST ALUMINUM W N24 88 89 2 F WHEEL 15X7 DEEP DISH INSERT BIRD LOGO CAST ALUMINUM N24 88 90 4 B WHEEL 15X7 FIVE INCH BOLT CIRCLE CAST ALUMINUM N27 87 90 1 L STEERING WHEEL 2 SPOKE STANDARD N30 76 91 STEERING WHEEL DELUXE N30 89 90 4 C STEERING WHEEL 2 SPOKE LEATHER DELUXE USED WITH ULTRA W24 N31 76 92 STEERING WHEEL CUSTOM N31 88 88 4 C STEERING WHEEL 3 SPOKE LEATHER WRAPPED CUSTOM USED WITH ELECTRA T TYPE Y48 N31 88 88 3 0 STEERING WHEEL 2 SPOKE LEATHER WRAPPED USED WITH TOURING W12 N32 76 90 STEERING WHEEL CUSTOM N32 88 89 1 L STEERING WHEEL 2 SPOKE DELUXE USED WITH LT Z11 GT Z21 N32 89 89 3 E STEERING WHEEL 2 SPOKE DELUXE USED WITH TROFEO SPORT COUPE N33 76 92 STEERING COLUMN TILT TYPE N34 76 87 STEERING WHEEL CUSTOM SPORT N36 82 90 STEERING WHEEL SPORT N37 76 89 STEERING COLUMN TILT AND TELESCOPING N40 76 91 STEERING HYDRAULIC NON VARIABLE N41 76 93 STEERING HYDRAULIC VARIABLE RATIO N45 85 87 STEERING WHEEL 3 SPOKE N46 84 91 STEERING WHEEL 4 SPOKE VINYL N51 76 91 STEERING MANUAL N54 86 87 STEERING WHEEL 3 SPOKE SPORT N6O 76 87 WHEEL ALUMINUM N6O 88 88 3 N WHEEL 13X5 5 PAINTED BRUSHED ALUMINUM STAMPED UN USED WITH APPEARANCE PACKAGE WM8 N60 88 89 4 J WHEEL 13X5 5 PAINTED BRUSHED ALUMINUM INCLUDES HAWK CAP N6O 88 90 WHEEL ALUMINUM PAINTED N6O 88 90 4 E WHEEL 15X6 PAINTED ALUMINUM USED WITH APPEARANCE PACKAGE R1V N64 85 90 WHEEL AND TIRE SPACE SAVER SPARE ALUMINUM N65 76 90 WHEEL AND TIRE SPACE SAVER SPARE STEEL N66 76 83 WHEEL RALLY TYPE VAR 1 N66 84 87 WHEEL RALLY TYPE 1989 GENERAL MOTORS SERVICE PARTS OPERAT ONS BU CK 44J RP0 24 REV 10 89