GM RPO Code Database

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Search the code list

24,366
codes on file
51,776
documented meanings
1973–2026
model years

Type a code, or describe the option in words. Every entry says where the meaning came from and which years we hold it for, because an RPO code can mean different things in different eras and a list that hides that is worse than no list.

CodeMeaningYearsSourcing
001 P RAT, M RATIO, 3.70 1991 GM sourced
001 Rat, M Ratio, 3.70 1991 GM dated
002 P RAT, M RATIO, 4.11 (4 1/9) 1991 GM sourced
002 Rat, M Ratio, 4.11 (4 1/9) 1991 GM dated
003 Rat, M Ratio, 4.33 1991 GM dated
003 P RAT, M RATIO, 4.33 1991 GM sourced
004 Rat, M Ratio, 4.78 1994 GM dated
004 P RAT, M RATIO, 4.78 1994 GM sourced
005 Rat, M Ratio, 4.56 (4 5/9) 1991 GM dated
005 P RAT, M RATIO, 4.56 (4 5/9) 1991 GM sourced
006 Rat, M Ratio, 4.63 (4 5/8) 1996 GM dated
006 P RAT, M RATIO, 4.63 (4 5/8) 1996 GM sourced
007 Rat, M Ratio, 3.07 1997 GM dated
007 P RAT, M RATIO, 3.07 1997 GM sourced
008 Rat, M Ratio, 4.88 1996 GM dated
008 P RAT, M RATIO, 4.88 1996 GM sourced
009 Rat, M Ratio, 5.29 1991 GM dated
009 P RAT, M RATIO, 5.29 1991 GM sourced
00A Spare wheel upgrade Chevrolet Silverado 1500 2022–2023 GM sourced
00A Wheel Spare 17 X 8.0, J, Steel, Design 2 — Reference
00D Not Equipped with Climate Control Knob Digital Temperature Display Chevrolet Silverado 1500 2022 Provisional
00G Not Equipped with Heated Steering Wheel, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00L Ccl, R Secondary Color, Exterior, Prime 1989 GM dated
00L P CCL, R SECONDARY COLOR, EXTERIOR, PRIME 1989 GM sourced
00L Exterior Color,secondary,prime,union City Body — GM dated
00R Not Equipped with Heated Rear Outboard Seats, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00U Ccu, M Primary Color, Exterior, Prime 1989 GM dated
00U P CCU, M PRIMARY COLOR, EXTERIOR, PRIME 1989 GM sourced
00U Exterior Color,primary,prime,upper,union City Body — GM dated
00V Not Equipped with Heated or Ventilated Front Seats, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00Y Not Equipped with Rear Park Assist, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00Z Not Equipped with Front and Rear Park Assist, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
010 Rat, M Ratio, 5.43 1991 GM dated
010 P RAT, M RATIO, 5.43 1991 GM sourced
011 Rat, M Ratio, 5.57 (5 4/7) 1991 GM dated
011 P RAT, M RATIO, 5.57 (5 4/7) 1991 GM sourced
012 Rat, M Ratio, 5.83 1991 GM dated
012 P RAT, M RATIO, 5.83 1991 GM sourced
013 Rat, M Ratio, 3.73 1995 GM dated
013 P RAT, M RATIO, 3.73 1995 GM sourced
014 Rat, M Ratio, 6.14 (6 1/7) 1991 GM dated
014 P RAT, M RATIO, 6.14 (6 1/7) 1991 GM sourced
015 Rat, M Ratio, 6.17 1991 GM dated
015 P RAT, M RATIO, 6.17 1991 GM sourced
016 Rat, M Ratio, 5.25 1991 GM dated
016 P RAT, M RATIO, 5.25 1991 GM sourced
017 Rat, M Ratio, 6.50 1991 GM dated
017 P RAT, M RATIO, 6.50 1991 GM sourced
018 Rat, M Ratio, 6.65 1989 GM dated
018 P RAT, M RATIO, 6.65 1989 GM sourced
019 Rat, M Ratio, 6.67 1989 GM dated
019 P RAT, M RATIO, 6.67 1989 GM sourced
01A Stc, R Stripe Color, Accent, Two Tone, Silver/gunmetal (1995) 1998 GM dated
01A P STC, R STRIPE COLOR, ACCENT, TWO TONE, SILVER/GUNMETAL (1995) 1998 GM sourced
01A Stripe Color Accent, Two Tone, Silver/gunmetal — GM dated
01A Trim Color Seat Jet Black — GM dated
01B Trim Color Seat LT Neutral — Reference
01C Trim Color Seat LT Titanium — Reference
01D Trim Color Seat LT Cashmere — Reference
01E Trim Color Seat DK Titanium — Reference

The full list, A to Z

Showing 601–700 of 751 codes beginning with K. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
KO5 Conversion Ethanol Capability — Reference
KO6 Vehicle Fuel Liquified Petroleum Gas,vapor - (propane & Propane/butane — Reference
KO7 Vehicle Fuel Dedicated Liquefied Petroleum Gas, Liquid — Reference
KOT Control Console, Infotainment, Redundant Controls, Touch Pad — Reference
KP0 P, FIN, R FLEET INCENTIVE, MEAD CORPORATION (W-TRK CKST), 807 — Provisional
KP1 Conversion Bi-fuel, Gasoline/propane Gas (lp Gas) — Reference
KP2 P, TIMER, RETAINED ACCESSORY POWER 1987 GM sourced
KP3 P, FIN, R, FLEET INCENTIVE, EXPRESS RENT A CAR (C/H/J/M/N/S/U/W-TRK CKMLST), 804 — Provisional
KP4 P, FIN, R, FLEET INCENTIVE, MINNIELAND PRIVATE DAY SCHOOL, INC. (-TRK GML), 20603 — GM sourced
KP5 P, FIN, R, FLEET INCENTIVE, CRANE AMERICA SERVICES (U/W-TRK CKGST), 10723 — Provisional
KP6 P, FIN, R, FLEET INCENTIVE, FUJITSU/ICL (-TRK CKGM), 101 — Provisional
KP7 P, FIN, R, FLEET INCENTIVE, BLUE DOT INDUSTRIES (TRK CKGML), 412 — Provisional
KP8 P, FIN, R, FLEET INCENTIVE, KELLY MOORE PAINT (N/W-TRK GML), 10608 — Provisional
KP9 P, FIN, R, FLEET INCENTIVE, MICROWAVE TRANSMISSION SYSTEMS, INC. (TRK CK), 20110 — Provisional
KPA Power outlet, rear auxiliary, 12-volt 2022 Provisional
KPH Knob Trans Cont Lever, Jet Black/lithium Gray — Reference
KPI Cover, Shifter FRT Floor Console, Piano Grey — Reference
KPJ P, ENGINE SHUTDOWN, AUTOMATIC this code has more than one documented meaning — filter by year 1986 GM sourced
KPK Heater, Oil Pan — Reference
KPL Cap Fuel Fill, Locking — Reference
KPP C, FLP, R, FLEET SALES, KRISPY KREME this code has more than one documented meaning — filter by year 1992 GM sourced
KPS P, COOLER, OIL, ENGINE, 21003 — GM sourced
KPV P, PROVISIONS, ENGINE BLOCK HEATER, 121 — Provisional
KQ1 P, FIN, R, FLEET INCENTIVE, ALLIED HOLDINGS (-TRK G), 11115 — Provisional
KQ2 P, FIN, R, FLEET INCENTIVE, CLIMATECH INC (-TRK CKG), 11115 — Provisional
KQ3 P, FIN, R, FLEET INCENTIVE, DC GUELICH EXPLOSIVE CO (-TRK CK), 11115 — Provisional
KQ4 P, FIN, R, FLEET INCENTIVE, GEO-CON, INC (-TRK CK), 11115 — Provisional
KQ5 P, FIN, R, FLEET INCENTIVE, GREER INDUSTRIES (-TRK CKG), 11115 — Provisional
KQ6 P, FIN, R, FLEET INCENTIVE, PRISM INTERNATIONAL (-TRK CKGML), 11115 — Provisional
KQ7 P, FIN, R, FLEET INCENTIVE, TRI-LIFT INC (-TRK G), 11115 — Provisional
KQ8 P, FIN, R, FLEET INCENTIVE, US CARGO AND COURIER SERVICE (TRK G), 11119 — Provisional
KQ9 P, FIN, R, FLEET INCENTIVE, GLASS AMERICA (W-TRK CKGST), 11119 — Provisional
KQD P, FLO, R, FILTER, OIL, LUBERFINER, 500C this code has more than one documented meaning — filter by year 1986 GM sourced
KQQ Starter,delco 42mt,type 450 Heavy Duty — Reference
KQR P, PROTECTOR, ENGINE STARTER, W/OVERCRANK this code has more than one documented meaning — filter by year 1999 GM sourced
KQS Fleet Incentive The Timken Corporation (h/w-trk St) — Reference
KQT Cover, Shifter FRT Floor Console, Athos Beige — Reference
KQU Cover, Shifter FRT Floor Console, Porthos Grey this code has more than one documented meaning — filter by year — Reference
KQV Seats, heated and ventilated driver and front passenger this code has more than one documented meaning — filter by year 2026 GM sourced
KQY P, HAT, R, THROTTLE CONTROL, LOCKING TYPE (VERNIER) this code has more than one documented meaning — filter by year 1990 GM sourced
KQZ Clutch Hydraulic, Cylinder Release — Reference
KR1 P, REFRIGERANT, AIR CONDITIONING this code has more than one documented meaning — filter by year 1990 GM sourced
KR2 P, FIN, R, FLEET INCENTIVE, BUDGET RENT A CAR LICENSEE ASSOC. (B/C/E/F/G/H/J/KU/V/W/Y-TRK CKGMLST), 404 — Provisional
KR3 P, FIN, R, FLEET INCENTIVE, HERTZ LICENSEE ASSOC. (B/C/E/F/G/H/J/K/U/W/Y-TRK CKGMLST), 404 — Provisional
KR4 P, FIN, R, FLEET INCENTIVE, PAYLESS CAR RENTAL (B/C/E/F/G/H/J/K/U/W/Y-TRK CKG MLST), 404 — Provisional
KR5 P, FIN, R, FLEET INCENTIVE, NEWS AMERICAN MARKETING (U), 128 — Provisional
KR6 P, FIN, R, FLEET INCENTIVE, METLIFE (N/U/W-TRK ST), 210 — Provisional
KR7 P, FIN, R, FLEET INCENTIVE, NATIONAL ELECTRICAL CONTRACTORS ASSOC. (G/H/J/K/N/U/W-TRK CKGMLST), 20422 this code has more than one documented meaning — filter by year — GM sourced
KR8 P, FIN, R, FLEET INCENTIVE, LAUDERHILL LEASING (B/C/E/F/G/H/J/K//M/N/R/S/U/V- W-TRK CKGMLST) "BEGINNING MODEL YEAR 2001", 823 — Provisional
KR9 P, FIN, R, FLEET INCENTIVE, UNITED STATES TOBACCO CO. (U/W-TRK CKGMLST), 516 — Provisional
KRA Fuel Rating, Octane No.79 — Reference
KRB Fuel Rating Octane No. 83 — Reference
KRC Fuel Rating Octane No. 87 — Reference
KRD Fuel Rating Octane No. 91 — Reference
KRE Fuel Rating Octane No. 95 — Reference
KRF Governor,engine,3400 Rpm — Reference
KRG P, ACL, M, AIR CLEANER, DRY INSIDE TYPE this code has more than one documented meaning — filter by year 1986 GM sourced
KRH Filter Air, Pollutant & Odor — Reference
KRJ Control Console, Infotainment, Redundant Controls — Reference
KRK Knob Trans Cont Lever, Leather, Satin Silver, Chrome — Reference
KRM Refrigerant A/c, W/o Gas — Reference
KRP Provisions Infotainment Unit Delete — Reference
KRV Refrigerant Low Gwp — Reference
KRW P, HOSE, RADIATOR, SILICONE this code has more than one documented meaning — filter by year 1986 GM sourced
KRX Fuel Rating Octane No. 93 — Reference
KS4 Knob Trans Cont Lever, Jet Black/chromed — Reference
KS5 Knob Trans Cont Lever, Jet Black/royale Gray — Reference
KS6 Knob Trans Cont Lever, Jet Black/excalibur Gray — Reference
KS9 Knob Trans Cont Lever, Suede — Reference
KSG Adaptive Cruise Control 2026 GM sourced
KSY Heater Pcv — Reference
KT0 P, FIN, R, FLEET INCENTIVE, WEISMAN EQUIPMENT (TRK CK), 11119 — Provisional
KT1 P, FIN, R, FLEET INCENTIVE, ESSROC, INC. (B/C/H/K/U/W-TRK CKGST), 20422 — Provisional
KT2 P, FIN, R, FLEET INCENTIVE, ELAN PHARMACEUTICALS (B/H/N/U/W-TRK ST), 11119 — Provisional
KT3 P, FIN, R, FLEET INCENTIVE, SUMITOMO ELECTRIC CARBIDE, INC. (H/W), 11127 — Provisional
KT4 P, FIN, R, FLEET INCENTIVE, SIERRA NEVADA CORPORATION (TRK CK), 11127 — Provisional
KT5 Cover, Shifter FRT Floor Console, Dark Sleek Silver 2 — Reference
KTA Audio Interface — Reference
KTB Audio Interface Wireless — Reference
KTD Key Primary Rigid, Additional Rigid — Reference
KTE P, INJECTOR, ETHER, START SYSTEM this code has more than one documented meaning — filter by year 1991 GM sourced
KTF Key Primary Foldable, Additional Foldable — Reference
KTG P, INJECTOR, GAS, BOSCH, 20328 E, 5 — GM sourced
KTH Lock Control Side Door Lock/unlock — Reference
KTI Kit, Tire Inflator — Reference
KTJ Lock Control Side Door Lock/unlock, Trunk Release — Reference
KTK Lock Control Side Door Lock/unlock, Remote Start — Reference
KTL Lock Control Side Door Lock/unlock, Trunk Release — Reference
KTM Key Primary Foldable, Additional Rigid — Reference
KTN Equipment Additional Key (no Buttons) — Reference
KTO Key Rear, Deck Lid, Compartment — Reference
KTR Key Primary Foldable, Additional Rigid, Var 1 — Reference
KTU Knob Trans Shift, Performance — Reference
KTZ Kit, Tire Inflator None — Reference
KU1 P, FAN, SEAT, DRIVER 1998 GM sourced
KU3 P, FAN, SEAT, PASS 1998 GM sourced
KU8 P, FIN, R, FLEET INCENTIVE, SANDERSON FARMS, INC. (TRK CK), 906 — Provisional
KUA Plant Code Gunsan, Korea — Reference
KUF Seats, ventilated second row 2026 GM sourced
KUK P, FWS, R, SEPARATOR, FUEL/WATER - RACOR, COLD WEATHER, NON-HEATED this code has more than one documented meaning — filter by year 1997 GM sourced

Using the master list

This is the full GM RPO code list we hold — every Regular Production Option code in the database, searchable by code or by description and filterable to a single model year. Most RPO lists on the internet run to a couple of hundred codes copied from one service manual. This one holds 24,366, and tells you where each meaning came from.

What an RPO code is

RPO stands for Regular Production Option. Every piece of factory equipment on a GM vehicle carries a three-character code, and the ones fitted to your truck are printed on the Service Parts Identification label in the glove box or on the door jamb. G80 is a locking differential, Z71 is an off-road suspension package, K05 is a block heater.

They matter because they are what the factory actually built, not what a listing claims. If you are buying a truck, the label settles the argument. If you are ordering parts, the axle and transmission codes decide which part fits.

Why the same code means different things

GM has reused these codes for decades and across every division. A code that means one thing on a 1978 pickup can mean something unrelated on a 2015 SUV, and plenty of entries in circulation come from bulk listings with no year and no document behind them.

So every entry here is labelled with where it came from. GM sourced means we hold an actual GM document for it. GM dated means it comes from the option master with a date attached. Reference means it is in general circulation with nothing dated behind it — still useful, but treat it as a lead rather than a fact. Filtering by your model year is the single best way to get an answer you can rely on.

Read the codes off your own label

If you have the sticker in front of you, the RPO decoder will read a photo of it and decode every code at once, checked against your model year.

FullSizeChevy.com is not affiliated with, endorsed by, or sponsored by General Motors. Chevrolet, GMC, Cadillac, Silverado, Sierra and related marks are trademarks of General Motors LLC and are used here only to identify applicable vehicles. RPO meanings vary by model year, platform and configuration — verify against your own label before buying parts.

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