GM RPO Code Database

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By FullSizeChevy.com Updated

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 1–100 of 702 codes beginning with Y. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
Y01 P, RING GEAR, 7.50 IN, SAGINAW, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y02 P, RING GEAR, 7.50 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y03 P, RING GEAR, 7.62 IN, SAGINAW, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y04 P, RING GEAR, 8.50 IN, SAGINAW, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y05 P, RING GEAR, 8.50 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y06 P, RING GEAR, 9.50 IN, SAGINAW, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y07 P, RING GEAR, 9.50 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y08 P, RING GEAR, 9.75 IN, SAGINAW, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y09 P, RING GEAR, 9.75 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y10 P, SALES, OLYMPIC PKG this code has more than one documented meaning — filter by year 1995 GM sourced
Y11 P, SALES, SPECIAL EXTR ORNAMENTATION (GOLD) 1996 GM sourced
Y12 P, RING GEAR, 12.0 IN, ROCKWELL, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y13 P, RING GEAR, 11.50 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y14 P, RING GEAR, 14.00 IN, DANA, (S.P.O.) this code has more than one documented meaning — filter by year 1998 GM sourced
Y15 Sales Package Ergo Sport Seat — Reference
Y16 Sales Package Sport Seat — Reference
Y19 Trim Combination Leather, Ebony/morocco — Reference
Y1A P, SCC, R, SEO COLOR, GRAY 8 1990 GM sourced
Y1B P, SCC, R, SEO COLOR, WHITE 4 1990 GM sourced
Y1C P, SCC, R, SEO COLOR, GOLD 3 1990 GM sourced
Y1D P, SCC, R, SEO COLOR, SILVER 4 1990 GM sourced
Y1E P, SCC, R, SEO COLOR, GRAY 9 1990 GM sourced
Y1F P, SCC, R, SEO COLOR, TAXI YELLOW 1990 GM sourced
Y1G P, SCC, R, SEO COLOR, CREAM 2 1990 GM sourced
Y1H P, SCC, R, SEO COLOR, TAN 2 1990 GM sourced
Y1I P, SCC, R, SEO COLOR, BLUE 35 1990 GM sourced
Y1J P, SCC, R, SEO COLOR, GREEN 28 1990 GM sourced
Y1K P, SCC, R, SEO COLOR, SILVER 2 1998 GM sourced
Y1L P, SCC, R, SEO COLOR, ROSE this code has more than one documented meaning — filter by year 1991 GM sourced
Y1M P, SCC, R, SEO COLOR, BLUE 36 1990 GM sourced
Y1N P, SCC, R, SEO COLOR, GRAY 10 1990 GM sourced
Y1P P, SCC, R, SEO COLOR, WHITE 5 1990 GM sourced
Y1Q P, SCC, R, SEO COLOR, BLACK 1990 GM sourced
Y1R P, SCC, R, SEO COLOR, BLUE 41 1990 GM sourced
Y1S P, SCC, R, SEO COLOR, FLAME RED 1990 GM sourced
Y1T P, SCC, R, SEO COLOR, DK GARNET RED 1990 GM sourced
Y1U P, SCC, R, SEO COLOR, BEACHWOOD this code has more than one documented meaning — filter by year 1991 GM sourced
Y1V P, SCC, R, SEO COLOR, BLUE 37 1990 GM sourced
Y1W P, SCC, R, SEO COLOR, SILVER 3 1990 GM sourced
Y1X P, SCC, R, SEO COLOR, DK MAPLE 1990 GM sourced
Y1Y P, SCC, R, SEO COLOR, GUNMETAL 1990 GM sourced
Y1Z P, SCC, R, SEO COLOR, GRAY 11 this code has more than one documented meaning — filter by year 1990 GM sourced
Y20 P, PROCESSING, SALES ZONE, SOUTHEAST 1994 Provisional
Y21 P, PROCESSING, SALES ZONE, NORTHEAST 1994 Provisional
Y22 P, PROCESSING, SALES ZONE, MIDWEST 1994 Provisional
Y25 P, PROCESSING, SALES ZONE, SOUTHWEST 1994 Provisional
Y27 P, PROCESSING, SALES ZONE, CENTRAL 1994 Provisional
Y28 P, PROCESSING, SALES ZONE, FLORIDA 1994 Provisional
Y2A P, SCC, R, SEO COLOR, RED 1 1990 GM sourced
Y2B P, SCC, R, SEO COLOR, BLUE 38 1990 GM sourced
Y2C P, SCC, R, SEO COLOR, WHITE 6 1990 GM sourced
Y2D P, SCC, R, SEO COLOR, MED BRIGHT RED 1997 GM sourced
Y2E P, SCC, R, SEO COLOR, BRIGHT YELLOW 1997 GM sourced
Y2F P, SCC, R, SEO COLOR, BRIGHT ORANGE 1997 GM sourced
Y2G P, SCC, R, SEO COLOR, YELLOW 1990 GM sourced
Y2H P, SCC, R, SEO COLOR, GREEN 29 1990 GM sourced
Y2I P, SCC, R, SEO COLOR, RYDER YELLOW 1990 GM sourced
Y2J P, SCC, R, SEO COLOR, ORANGE 1 1990 GM sourced
Y2K P, SCC, R, SEO COLOR, GREEN 30 1990 GM sourced
Y2L P, SCC, R, SEO COLOR, RED 2 1990 GM sourced
Y2M P, SCC, R, SEO COLOR, ORANGE 2 1990 GM sourced
Y2N P, SCC, R, SEO COLOR, HERTZ YELLOW 1990 GM sourced
Y2P P, SCC, R, SEO COLOR, COCA-COLA RED 1998 GM sourced
Y2Q P, SCC, R, SEO COLOR, CAMEL 1990 GM sourced
Y2R P, SCC, R, SEO COLOR, GREEN 31 1990 GM sourced
Y2S P, SCC, R, SEO COLOR, BLUE 39 1990 GM sourced
Y2T P, SCC, R, SEO COLOR, DK GREEN GRAY MET 1990 GM sourced
Y2U P, SCC, R, SEO COLOR, PURPLE PEARL 1993 Provisional
Y2Y P, SALES PACKAGE, CAMARO SS DUAL LABEL 1997 Provisional
Y30 P, PROCESSING, SALES ZONE, LOS ANGELES 1994 Provisional
Y33 P, PROCESSING, SALES ORDER OVERRIDE 1994 Provisional
Y34 P, PROCESSING, SALES ZONE, NEW YORK 1994 Provisional
Y35 P, PROCESSING, SALES ZONE, MID-ATLANTIC 1998 Provisional
Y37 P, PROCESSING, SALES ZONE, NORTHWEST 1994 Provisional
Y39 P, PROCESSING, USED COMPANY CAR SALES 1994 Provisional
Y3A Sales Blue Top, Special Edition I — Reference
Y3B P, SALES PACKAGE, CAMARO RS DUAL LABEL 1999 Provisional
Y3C P, SALES PACKAGE, FIREBIRD GT DUAL LABEL 1999 Provisional
Y3E Model Conversion Buick GS With Opc Look — Reference
Y3F P, SALES PACKAGE, CAMARO GROUND EFFECTS 1997 GM sourced
Y3G P, SGR, R, MERCHANDISED PKG, MOBILITY, PERSONAL USE, 609 E 1, 1, A — GM sourced
Y3H P, SGR, R, MERCHANDISED PKG, MOBILITY, PARATRANSIT, 609 E 1, 1, A — GM sourced
Y3R P, SALES, 25TH ANNIVERSARY 1997 Provisional
Y3S Sales Blue Top, Special Edition II — Reference
Y40 Sales Package Cadillac, Luxury Level 001 this code has more than one documented meaning — filter by year — Reference
Y41 Sales Package Cadillac, Luxury Level 002 — Reference
Y42 Sales Package Cadillac, Performance Package 001 — Reference
Y43 Sales Package Cadillac, Performance Package 002 — Reference
Y44 Sales Package Cadillac, Seating Package — Reference
Y45 P, PROVISION OPTIONS, ULTRA SEATING PACKAGE 1998 Provisional
Y46 Sales Package Cadillac, Theatre — Reference
Y47 Sales Package Cadillac, International Luxury 001 — Reference
Y48 Sales Package Cadillac, International Luxury 002 — Reference
Y49 Sales Package Cadillac, International Performance 001 — Reference
Y4A P, EXHAUST, CATALYTIC CONVERTER BACK 1997 Provisional
Y4B P, PROVISIONS, LEVEL II ULTRA PERFORMANCE SUSPENSION, 1206 P 1 — Provisional
Y4C P, LUBRICANT, ENGINE OIL & PERFORMANCE 1997 Provisional
Y4D P, AXLE, TORQUE SENSING DIFFERENTIAL 1997 Provisional
Y4E P, COOLING SYSTEM, ENGINE OIL 1997 Provisional
Y4F P, PROVISIONS, HURST SHIFTER 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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