GM PRODUCTION OPTIONS RPO FY LY DIVISIONAL RPO DESCRIPTION SPOGM RPO DESCRIPTION 7 M39 85 88 TRANSMISSION 5 SPD MAN BORG WARNER W M T M39 M40 76 89 TRANSMISSION 3 SPD AUTO THM400 W A T M40 M51 76 81 STEERING SYSTEM MANUAL EXC P S M57 76 85 TRANSMISSION 4 SPD AUTO THM325 4L W A T M57 M62 76 87 TRANSMISSION 3 SPD MAN MUNCIE W M T M62 M63 76 81 TRANSMISSION 3 SPD MAN W M T M63 M64 76 B7 TRANSMISSION 3 SPD MAN MUNCIE W M T M64 4 M67 76 81 TRANSMISSION 4 SPD MAN MUNCIE W M T M67 M73 76 88 TRANSMISSION 4 SPD MAN ISUZU W M T M73 M75 76 86 TRANSMISSION 5 SPD MAN ISUZU W M T M75 M77 76 84 TRANSMISSION 4 SPD MAN BORG WARNER W M T M77 M79 88 88 TRANSMISSION 4 SPD MAN ISUZU W M T M79 NA1 87 89 EMISSION SYSTEM LIGHT DUTY W NA1 NA2 76 81 EMISSION SYSTEM STANDARD W FED NA2 NA4 B7 89 EMISSION SYSTEM HEAVY DUTY W NA4 NA5 76 89 EMISSION SYSTEM FEDERAL REQUIREMENTS W FED NA5 NA6 76 89 EMISSION SYSTEM ALTITUDE REQUIREMENTS W ALT NA6 NA9 76 89 EMISSION CONTROL EVAPORATIVE W E E S NA9 NB1 76 85 EMISSION CONTROL CLOSED LOOP W CLSD LOOP NB1 NB2 76 89 EMISSION SYSTEM CALIFORNIA REQUIREMENTS W CALIF NB2 NB3 89 89 EMISSION SYSTEM ABOVE 10 000 LB GVW W NB3 NB5 76 83 EXHAUST SYSTEM SINGLE W SINGLE EXH NB5 NB9 84 85 FILTER SYSTEM FUEL W NB9 NO3 84 89 TAILPIPE MODIFICATIONS EXPORT W NC3 EXPORT NC5 B8 88 EXHAUST SYSTEM DUAL VERTICAL PIPES CHROME W CHR EXH NC5 NC6 76 89 EXHAUST SYSTEM SPORTY W SPORT EXH NO6 NC8 76 84 EMISSION SYSTEM INTERNAL EGR DIESEL W INTERNAL EGR NCB ND1 76 85 TANK FUEL 86 LITER W 86 LITER TK ND1 NE2 76 88 TANK FUEL 40 GALLON W 40 GAL TK NE2 NF1 76 83 TANK FUEL 69 LITER W 69 LITER TK NF1 NF2 76 85 TANK FUEL 75 LITER W 75 LITER TK NF2 NF9 84 84 HEAT SHIELD EXHAUST SYSTEM TO GROUND W EXH HT SHLD NF9 NG1 76 85 TANK FUEL 76 LITER W 76 LITER TK NG1 NH1 76 85 TANK FUEL 83 LITER W 83 LITER TK NH1 NH7 76 85 TANK FUEL 103 LITER W 103 LITER TK NH7 I NH8 76 83 TANK FUEL 69 LITER W 69 LITER TK NH8 V NJ8 88 89 TANK FUEL 129 LITER 34 GALLON W 129 LITER TK NJB NK1 76 85 TANK FUEL 69 LITER W 69 LITER TK NK1 NK2 76 81 TANK FUEL 79 LITER W 79 LITER TK NK2 NK2 82 87 TANK FUEL 76 LITER W 76 LITER TK NK2 V NK3 76 83 WHEEL STRG FORMULA W FORMULA WHL NK3 NK3 84 B9 WHEEL STRG SPORT SOFT RIM SIMULATED LEATHER W SPORT WHL NK3 NK4 76 89 WHEEL STRG SPORT LEATHER W SPORT WHL NK4 NK5 76 89 WHEEL STRG STANDARD W STD WHL NK5 NK6 76 85 TANK FUEL 83 LITER W B3 LITER TK NK6 NK7 76 88 TANK FUEL 31 GALLON W 31 GAL TK NK7 NK8 76 85 TANK FUEL 96 LITER W 96 LITER TK NK8 A NL2 76 88 TANK AUXILARY FUEL VAR 2 W AUX TK NL2 NL7 76 89 TANK FUEL 33 GALLON W 33 GAL TK NL7 NL8 76 81 TANK FUEL 2K GALLON RR MOUNTED W RR MT TK NL8 NL8 87 88 TANK FUEL 94 8 LITER 25 GALLON W 25 GAL TK NL8 NL9 85 88 TANK FUEL 27 GALLON W 27 GAL TK NL9 V NM1 83 85 SWITZERLAND SWEDEN EMISSION PROVISION W NM1 EXPORT NM4 76 85 EMISSION CONTROL NON CLOSED LOOP W NM4 EXPORT CANADA NM5 76 89 EM SSION SYSTEM NON CLOSED LOOP CANADA W NM5 EXPORT CANADA NM6 76 85 EM SSION CONTROL CANADA RECALIBRATION W NM6 EXPORT CANADA NM8 76 86 EMISSION MODIFICATION LEADED GAS CONVERSION W NM8 EXPORT A NM8 87 89 EMISSION SYSTEM LEADED FUEL W NM8 EXPORT NM9 76 81 DIESEL EMISSION SYSTEM EXTERNAL EGR W EXTERNAL EGR NM9 NN1 76 84 EMISSION SYSTEM DUAL BED MONALITHE CONVERTER W NN1 NN2 76 81 EMISSION SYSTEM SINGLE BED MONALITHE CONV W NN2 NN3 76 84 EMISSION SYSTEM SINGLE BED BEAD CONVERTER W NN3 NN4 82 89 TANK FUEL 60 GALLON W 60 GAL TK NN4 NN5 85 B8 EMISSION SYSTEM CALIFORNIA OVERRIDE W NN5 NN6 82 84 EGR REVERSE FLOW A W NN6 NN7 82 88 DOOR LOCK FUEL FILLER DELETE EXC FIL DR LK NN9 82 85 EMISSION SYSTEM LEADED FUEL EXPORT W NN9 EXPORT NP1 76 81 V6 ECONOMY EQUIPMENT W FUEL ECON EQUIP NP1 NP5 76 89 WHEEL STEERING LEATHER WRAPPED W NP5 NP6 B5 85 WHEEL STEERING WOOD W WD STRG WHL NP6 NP7 82 89 rCOLUMN STEERING W NP7 EXPORT NO5 84 89 CAP STEERING WHEEL DELUXE HORN W DLX HORN CAP NQ5 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52R REV 1 88 RPO 17