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| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| 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 955 codes beginning with B. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| BK1 | Fleet Incentive-dupont | — | Reference |
| BK2 | P, MDI, R MOLDING I/P, INTR, BLACK, 10831 E 0 | — | Provisional |
| BK3 | P, MDI, R MOLDING I/P, INTR, BLUE, 10831 E 0 | — | Provisional |
| BK4 | P, FIN, R FLEET INCENTIVE, LOVE BOX COMPANY (B/G/H/J/K/N/U/W-TRK CKGMLST), 11022 | — | Provisional |
| BK5 | P, FIN, R FLEET INCENTIVE, TRW (N/U/W-TRK CKGMLST), 10425 | — | Provisional |
| BK6 | P, FIN, R FLEET INCENTIVE, SHEARING CORP (C/H/J/M/N/U/W-TRK CKGMLST), 11001 | — | Provisional |
| BK7 | P, FIN, R FLEET INCENTIVE, SIMON SCHUSTER (H/N/U/W-TRK ST) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| BK8 | P, FIN, R FLEET INCENTIVE, AVON PRODUCTS, INC. (J/N/U/W) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| BK9 | P, FIN, R FLEET INCENTIVE, GLACIER WATER SERVICES, INC. (N/W-TRK CKGMLST), 11001 | — | Provisional |
| BKA | P, TRAY, ROOF, EXTERIOR, PAINTED, 20628 | — | GM sourced |
| BKB | P, ORNAMENTATION, NAME PLATE "ISUZU KB", 11130 | — | Provisional |
| BKC | P, MDI, R MOLDING I/P, INTR, BLACK/WHITE LINES, 20826 E 0 | — | Provisional |
| BKD | P, VEHICLE, VOLUME INDEXING | 1988 | Provisional |
| BKE | Premium Floor Liners with removable carpet insert, rear | 2026 | GM sourced |
| BKF | Premium Floor Liners with removable carpet insert, front | 2026 | GM sourced |
| BKG | P, MDD, R MOLDING DOOR, INTR, BLACK/WHITE LINES, 20826 E 0 | — | Provisional |
| BKH | P, MDI, R MOLDING I/P, INTR, SHADOW WOODGRAIN, 20924 E 0 | — | Provisional |
| BKI | Ornamentation Extr, Mldg, R/cmpt, Body Color | — | Reference |
| BKJ | Ornamentation Extr, Mldg, R/cmpt, Chrome | — | Reference |
| BKK | Plant Code Betim, Brazil | — | Reference |
| BKS | Family Code, Brake System | 1988 | GM dated |
| BKU | P, FMF, R COVERING FRT, FLOOR MATS, RUBBER, 11024 | — | Provisional |
| BKV | P, FMR, R COVERING REAR, FLOOR MATS, RUBBER, 11024 | — | Provisional |
| BKY | Ornamentation Intr, Hvac Controls, Chrome | — | Reference |
| BL0 | P, MDD, R MOLDING DOOR, INTR, CHARCOAL METALLIC, 20826 E 0 | — | Provisional |
| BL1 | 2011 Oem Engine Physical ID Bl1 & Production Number 94672004 | — | Reference |
| BL2 | 2011 Oem Engine Physical ID Bl2 & Production Number 94672005 | — | Reference |
| BL3 | 2011 Oem Engine Physical ID Bl3 & Production Number 94671447 this code has more than one documented meaning — filter by year | — | Reference |
| BL4 | 2011 Oem Engine Physical ID Bl4 & Production Number 94671448 | — | Reference |
| BL5 | 2011 Oem Engine Physical ID Bl5 & Production Number 94671449 | — | Reference |
| BL6 | 2011 Oem Engine Physical ID Bl6 & Production Number 94671450 | — | Reference |
| BL7 | 2011 Oem Engine Physical ID Bl7 & Production Number 94671451 | — | Reference |
| BL8 | 2011 Oem Engine Physical ID Bl8 & Production Number 94672002 | — | Reference |
| BL9 | 2011 Oem Engine Physical ID Bl9 & Production Number 94672003 | — | Reference |
| BLA | P, MDI, R MOLDING I/P, INTR, WOODGRAIN, 20709 E 0 | — | Provisional |
| BLB | P, MDI, R MOLDING I/P, INTR, SILVER, 20709 E 0 | — | Provisional |
| BLC | P, MDD, R MOLDING DOOR, INTR, SILVER CHESSBOARD DESIGN, BRIGHT/MATT, 20826 E 0 | — | Provisional |
| BLE | P, MDD, R MOLDING DOOR, INTR, MATT CHROME, 20826 E 0 | — | GM sourced |
| BLF | P, MDI, R MOLDING I/P, INTR, SILVER CHESSBOARD DESIGN, BRIGHT/MATT, 20826 E 0 | — | Provisional |
| BLG | Moulding I/p, Matte Chrome | — | Reference |
| BLH | P, MDI, R MOLDING I/P, INTR, INDIAN RED, 20826 E 0 | — | Provisional |
| BLJ | P, MDI, R MOLDING I/P, INTR, CHARCOAL METALLIC, 20826 E 0 | — | GM sourced |
| BLK | P, MDI, R MOLDING I/P, INTR, SILVER METALLIC, 20925 E 0 | — | Provisional |
| BLL | P, CCL, R SECONDARY COLOR, EXTERIOR, GENERIC BLACK, 10308 E 1, 1, A | — | GM sourced |
| BLM | P, MDD, R MOLDING DOOR, INTR, SILVER METALLIC, 20925 E 0 | — | Provisional |
| BLN | P, MDD, R MOLDING DOOR, INTR, MAZE CHROME, 20925 E 0 | — | Provisional |
| BLP | P, MDI, R MOLDING I/P, INTR, MAZE CHROME, 20925 E 0 | — | Provisional |
| BLQ | Plate Inscription Type 'a' | — | Reference |
| BLR | Plate Inscription Type 'a-1' | — | Reference |
| BLS | Plate Inscription Type 'b' | — | Reference |
| BLT | Family Code, Seat Belt Color | 1988 | GM dated |
| BLU | P, CCU, M PRIMARY COLOR, EXTERIOR, GENERIC BLACK, 20607 E 1 | — | GM sourced |
| BLV | Plate Inscription Type 'd' | — | Reference |
| BLW | Plate Inscription Type 'e' | — | Reference |
| BLX | Plate Inscription Type 'e-1' | — | Reference |
| BLY | Plate Inscription Type 'f' | — | Reference |
| BLZ | P, FIN, R FLEET INCENTIVE, EXPERIAN (N/U/W-CKMLST), 21001 | — | Provisional |
| BM0 | P, FIN, R FLEET INCENTIVE, BUDGET RENT-A-CAR/VI (J/N/U-TRK ST), 20826 | — | Provisional |
| BM1 | P, FIN, R FLEET INCENTIVE, ALBERTA GOVERNMENT LEASES (B/H/J/N/U/W-TRK CKGJML ST), 10529 P 7 | — | Provisional |
| BM2 | P, FIN, R FLEET INCENTIVE, PETRO, INC. (W-TRK G), 11114 | — | Provisional |
| BM3 | P, FIN, R FLEET INCENTIVE, INTERNATIONAL TECHNOLOGY CORP. (N/W-TRK CKGJST), 10205 this code has more than one documented meaning — filter by year | — | GM sourced |
| BM4 | P, FIN, R FLEET INCENTIVE, NESTLE USA (H/N/U/W-TRK ST) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| BM5 | P, FIN, R FLEET INCENTIVE, COLGATE PALMOLIVE (C/G/H/K/N/W-TRK CKJMLST), 21001 | — | Provisional |
| BM6 | P, FIN, R FLEET INCENTIVE, MARRIOTT CORP (C/E/F/G/H/J/K/M/N/S/U/W/Y-TRK CKGMLPST) | 1999 | GM sourced |
| BM7 | P, FIN, R FLEET INCENTIVE, AMG, INC (C/H/J/N/U/W-TRK CKM) | 1998 | GM sourced |
| BM8 | P, FIN, R FLEET INCENTIVE, MITCHELL ENERGY & DEVELOPMENT (TRK CKGST), 10905 | — | Provisional |
| BM9 | P, FIN, R FLEET INCENTIVE, MASSEY SERVICES (D/G/H/J/N/W-TRK CKGMLST), 20801 | — | Provisional |
| BMA | P, IDENTIFICATION, PRODUCTION TRIAL RUN, 403 P 1 | — | Provisional |
| BMB | Plate Inscription Type 'h' | — | Reference |
| BMC | Plate Inscription Type 'h-1' | — | Reference |
| BMD | P, PLT, R PLANT CODE, FLINT, MI, USA this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| BME | Family Code, Valve Air Brake | 1989 | GM dated |
| BMF | Ornamentation Emblem, 'pontiac' | — | Reference |
| BMG | Ornamentation Emblem, 'daewoo' | — | Reference |
| BMH | Ornamentation Emblem, 'suzuki' | — | Reference |
| BMI | Merchandised Pkg Suzuki Xl-7 'touring' | — | Reference |
| BMJ | Merchandised Pkg Suzuki Xl-7 'limited' | — | Reference |
| BMK | Moldings, bright chrome bodyside | 2026 | GM sourced |
| BML | P, SGR, R MERCHANDISED PKG, MERCHANDISED PKG GMT191 SUV 'LS', 20826 E 3 | — | Provisional |
| BMM | P, SGR, R MERCHANDISED PKG, MERCHANDISED PKG GMT191 SUV 'LT', 20826 E 3 | — | GM sourced |
| BMN | Merchandised Pkg Chevrolet Equinox Sport | — | Reference |
| BMP | P, SGR, R, MERCHANDISED PKG, MERCHANDISED PKG GMT 191 SUV 'LTZ', 20826 E, 3 | — | GM sourced |
| BMQ | Merchandised Pkg Pontiac Torrent 'gxp' | — | Reference |
| BMR | Molding B/s Body Color, Metallic Insert | — | Reference |
| BMS | Plate Inscription-delete | — | Reference |
| BN0 | P, ORNAMENTATION, INTR, HDLP SW, BLACK | 1999 | Provisional |
| BN1 | P, FIN, R, FLEET INCENTIVE, THE FARM, INC (J), 20320 | — | Provisional |
| BN2 | P, FIN, R, FLEET INCENTIVE, OWENS ILLINOIS, INC (C/H/N/U/W-TRK CKGMST), 20801 this code has more than one documented meaning — filter by year | — | GM sourced |
| BN3 | P, FIN, R, FLEET INCENTIVE, CITICAPITAL FLEET SERVICES (N/W-TRK ST), 10516 | — | Provisional |
| BN4 | P, FIN, R, FLEET INCENTIVE, HMT (W-TRK CKG), 10919 this code has more than one documented meaning — filter by year | — | GM sourced |
| BN5 | P, FIN, R, FLEET INCENTIVE, USG CORP (B/C/E/G/H/K/N/U/W-TRK CKGMLST), 20801 | — | Provisional |
| BN6 | P, FIN, R, FLEET INCENTIVE, EXXON CORP (H/J/K/N/U/W-TRK CKGPMLST) | 1999 | GM sourced |
| BN7 | P, FIN, R, FLEET INCENTIVE, JOHNSON & JOHNSON (H/N/U/W-TRK MST) | 1998 | GM sourced |
| BN8 | P, FIN, R, FLEET INCENTIVE, TEXAS SOUTH, INC. (H/N/S-TRK CK), 20801 | — | Provisional |
| BN9 | P, FIN, R, FLEET INCENTIVE, INGERSOLL - RAND (C/H/K/U/W-TRK CKGMST), 11004 | — | Provisional |
| BNB | P, ORNAMENTATION, EXTR, UNPAINTED this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| BNC | P, PARTS PKG, BODY MOUNT CUSHIONS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| BNE | P, EQUIPMENT, BUDGET RENTAL | 1998 | GM sourced |
| BNF | P, MDD, R, MOLDING DOOR, INTR, SHADOW WOODGRAIN, 20924 E, 0 | — | Provisional |
| BNK | Cover Engine Compartment, Appearance | — | Reference |
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.