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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 501–600 of 1,078 codes beginning with T. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| TGZ | Language Control English, Korean, Chinese | — | Reference |
| TH0 | P, RWG, R, WINDOW RR, SLIDING, GUARD - DELETE | 1998 | Provisional |
| TH1 | P, REFLECTOR, SAFETY TRIANGLE - DELETE | 1998 | Provisional |
| TH2 | P, PROVISIONS, POWER TAKE OFF (PTO) | 1998 | Provisional |
| TH3 | P, LOK, R, LOCK, WINDOW PWR OP-THEFT DETER SYS *OPT PKG* | 1998 | Provisional |
| TH4 | P, LOK, R, LOCK, WINDOW PWR OP-THEFT DETER SYS, MIRRORS, *OPT PKG* | 1995 | Provisional |
| TH5 | P, HEIGHT ADJUSTMENT, SAFETY BELT, FRONT SEAT, 20919 E, 5 | — | GM sourced |
| TH6 | P, FIN, R, FLEET INCENTIVE, PROFESSIONAL SERVICE INDUSTRIES (TRK CKST) | 1999 | GM sourced |
| TH7 | P, SPP, R, PACKAGE, WHITE CRANE - FULL VERSION | 1999 | Provisional |
| TH8 | P, RDO, M, RADIO, AM/FM STEREO, DIGITAL, ETR, W/SPK & MAN ANT | 1995 | Provisional |
| TH9 | P, RDO, M, RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, ETR | 1998 | Provisional |
| THA | C, FLP, R, FLEET SALES, TENNANT GO #S7855, 10223 | — | GM sourced |
| THB | C, FLP, R, FLEET SALES, METRO LEASING this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| THC | C, FLP, R, FLEET SALES, RYDER GO# R5660 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| THD | C, FLP, R, FLEET SALES, PENSKE/EMERY GO# M1060 & M1061 | 1998 | GM sourced |
| THE | C, FLP, R, FLEET SALES, CON EDISON GO# K0439 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THF | C, FLP, R, FLEET SALES, ELGIN SWEEPER this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THG | C, FLP, R, FLEET SALES, NIAGARA MOHAWK GO# A1534, ETC this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THH | C, FLP, R, FLEET SALES, PENSKE TRUCK LEASE GO# M1094 | 1996 | GM sourced |
| THI | C, FLP, R, FLEET SALES, BROWNING FERRIS IND this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| THJ | C, FLP, R, FLEET SALES, DETROIT EDISON GO# J5211, 10321 | — | Provisional |
| THK | C, FLP, R, FLEET SALES, NICKLES BAKERY | 1993 | GM sourced |
| THL | P, HEIGHT ADJUSTMENT, SAFETY BELT, REAR SEAT, 20919 E, 5 | — | Provisional |
| THM | C, FLP, R, FLEET SALES, TRANSPORT CABANO this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| THN | C, FLP, R, FLEET SALES, STATE OF NORTH CAROLINA. this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| THO | C, FLP, R, FLEET SALES, PENSKE GO# G1667, G1668, G1674, G1676 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THP | C, FLP, R FLEET SALES, RYDER GO# R4223 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THQ | C, FLP, R FLEET SALES, BUDGET GO# F4196 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THR | C, FLP, R FLEET SALES, MCKESSON-SPARKLETTS this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| THS | Trailering Assist Guidelines | 2026 | GM sourced |
| THT | Equipment Storage, FRT Console, Warm, Cool this code has more than one documented meaning — filter by year | — | Reference |
| THU | C, FLP, R FLEET SALES, STATE OF CALIFORNIA this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| THV | C, FLP, R FLEET SALES, AMERICAN HIGH REACH this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| THW | C, FLP, R FLEET SALES, U-HAUL S/O# A0028-29 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THX | C, FLP, R FLEET SALES, PENSKE/EMERY GO#1702, 522 | — | GM sourced |
| THY | C, FLP, R FLEET SALES, STATE OF MICHIGAN GO# N7146 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| THZ | C, FLP, R FLEET SALES, N.Y. STATE ELECTRIC this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| TI0 | P, FIN, R FLEET INCENTIVE, RECKITT BENCKISER (H/U/W-TRK ST), 10912 | — | Provisional |
| TI1 | P, FIN, R FLEET INCENTIVE, MAERSK SEALAND (H/W-TRK CKGMLST), 10912 | — | Provisional |
| TI2 | P, FIN, R FLEET INCENTIVE, PRIME SOURCE BUILDING PRODUCTS (W-TRK ST), 10822 | — | Provisional |
| TI3 | P, FIN, R FLEET INCENTIVE, CINTAS CORPORATION (C/D/E/F/G/H/J/K/L/M/N/S/U/W/Y -TRK CKGPMLST) | 1999 | GM sourced |
| TI4 | P, FIN, R FLEET INCENTIVE, SOLUTIA INC, (W), 20806 | — | Provisional |
| TI5 | P, FIN, R FLEET INCENTIVE, OCE'-BRUNING, INC (C/H/N/U/W-TRK GML) | 1999 | GM sourced |
| TI6 | P, FIN, R FLEET INCENTIVE, SEPTRAN (TRK CK), 10926 | — | Provisional |
| TI7 | P, FIN, R FLEET INCENTIVE, INLAND PAPERBOARD & PKG. (U/W-TRK ST), 20619 | — | Provisional |
| TI8 | P, FIN, R FLEET INCENTIVE, BLUE CROSS/BLUE SHIELD OF ARKANSAS (H/W), 10820 | — | Provisional |
| TI9 | P, FIN, R FLEET INCENTIVE, KRISPY KREME DOUGHNUT CORP (TRK G), 20418 | — | Provisional |
| TIA | P, IDENTIFICATION, EFFECTIVE POINT CONTROL - SEAT ADJUSTMENT, 2 DR VEHICLES, 21022 E, 0 | — | Provisional |
| TID | Identification Effective Point Control - Running Change | — | Reference |
| TIL | P, PLT, R PLANT CODE, TILLSONBURG, ONT, CANADA (CKD-TRK) | 1997 | GM sourced |
| TIR | Family Code, Tire All | 1988 | GM dated |
| TJ0 | P, PARTS, SHIPPED TO GM INDIA (INDIA) | 1998 | Provisional |
| TJ1 | P, PARTS, SHIPPED TO EM.GM. (VENEZUELA) | 1995 | Provisional |
| TJ2 | P, PARTS, SHIPPED TO COLMOTORES (COLUMBIA) | 1995 | Provisional |
| TJ3 | P, PARTS, SHIPPED TO GE.MO. (URUGUAY) | 1996 | Provisional |
| TJ4 | P, PCD, R EQUIPMENT CKD, ECUADOR (CKD), 10803 E, 5, 5, A | — | GM sourced |
| TJ5 | P, PARTS, SHIPPED TO INDASA (PERU) | 1998 | Provisional |
| TJ6 | P, PARTS, SHIPPED TO AFRICAR (ZAIRE) | 1998 | Provisional |
| TJ7 | P, PARTS, SHIPPED TO SIGNET DISTR, INC (PHILIPPINES) | 1998 | Provisional |
| TJ8 | P, PARTS, SHIPPED TO MOTOR INDUSTRIA S/A (PERU) | 1995 | Provisional |
| TJ9 | P, PARTS, SHIPPED TO *GM-NIGERIA* | 1998 | Provisional |
| TJA | Fleet Sales,penske Truck Lease GO #k7249 | — | Reference |
| TJB | C, FLP, R FLEET SALES, STATE OF CALIFORNIA GO# H1998 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJC | P, FIN, R FLEET INCENTIVE, SERVICE BRANDS INTERNATIONAL (J/N/U-TRK CKGST), 20201 this code has more than one documented meaning — filter by year | — | GM sourced |
| TJD | Fleet Sales,ryder GO #r70050 | — | Reference |
| TJE | P, FLP, R FLEET SALES, METRO TRUCK | 1991 | GM sourced |
| TJF | C, FLP, R FLEET SALES, DETROIT EDISON GO #A0926 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJG | C, FLP, R FLEET SALES, ELGIN SWEEPER GO #A0362, ETC this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJH | C, FLP, R FLEET SALES, EMERGENCY ONE GO# K6335, K8131, K8353-8 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJI | C, FLP, R FLEET SALES, MONOGAHELA POWER CO GO# L0434 | 1998 | GM sourced |
| TJJ | C, FLP, R FLEET SALES, MODERN BUILDERS GO# 6657, 920 | — | Provisional |
| TJK | C, FLP, R FLEET SALES, CITY OF NEW YORK GO# K9196 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJL | C, FLP, R FLEET SALES, COLOMOTORES GO# L2925 & 2926 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJM | C, FLP, R FLEET SALES, PENSKE GO# K8221 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJN | C, FLP, R FLEET SALES, HERSCHELMAN (T&B) ENGINEERING S/O #P6828 | 1998 | GM sourced |
| TJO | C, FLP, R FLEET SALES, HARFORD COUNTY GO# M1550 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJP | P, FLP, R FLEET SALES, HERSCHELMAN | 1991 | GM sourced |
| TJQ | P, FLP, R FLEET SALES, BLUE BELL CREAMERIES GO# M1612, 18, 20, 21 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJR | P, FLP, R FLEET SALES, RYDER GO# R2042 | 1998 | GM sourced |
| TJS | P, FLP, R FLEET SALES, CITY OF ATLANTA GO# M2298 - M2302 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJT | P, FLP, R FLEET SALES, GM OF VENEZUELA GO# P3407 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJU | C, FLP, R FLEET SALES, DEKALB COUNTY GO# M3424 | 1998 | GM sourced |
| TJV | C, FLP, R FLEET SALES, LOWES this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| TJW | C, FLP, R FLEET SALES, PENSKE GO# L0154 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJX | P, FLP, R FLEET SALES, PENSKES | 1997 | Provisional |
| TJY | C, FLP, R FLEET SALES, RYDER GO# R2163 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TJZ | C, FLP, R FLEET SALES, RYDER GO# R2164 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| TK0 | P, TNK, M FUEL TANK, 46L, 12 GAL, PLASTIC | 1998 | Provisional |
| TK1 | P, PARTS, SHIPPED TO ARGENTINA | 1997 | Provisional |
| TK2 | P, PARTS, UNDER GMA RESPONSIBILITY, NOT SHIPPED BY GMB | 1995 | Provisional |
| TK3 | P, PARTS, SHIPPED TO TUNISIA, 229 E, 5, 5, A | — | Provisional |
| TK4 | P, SPP, R PACKAGE, TRUCK "17 TON SHORT WHEELBASE" | 1998 | Provisional |
| TK5 | P, CND, R CONVENIENCE PKG, PICK UP DLX | 1998 | Provisional |
| TK6 | P, SALES PACKAGE, SPECIAL SERIES "CHAMP 98" | 1997 | Provisional |
| TK7 | P, SPP, R PACKAGE, TRUCK "15 TON SHORT WHEELBASE" | 1998 | Provisional |
| TK8 | P, SPP, R PACKAGE, TRUCK "15 TON LONG WHEELBASE" | 1998 | Provisional |
| TK9 | P, SPP, R PACKAGE, TRUCK "17 TON LONG WHEELBASE" | 1998 | Provisional |
| TKA | P, FIN, R FLEET INCENTIVE, CALIFORNIA CASUALTY MGT. (H/K/N/W-TRK ST), 11001 | — | Provisional |
| TKB | P, FLP, R FLEET SALES, SPARKLETTS/ARROWHEAD | 1991 | Provisional |
| TKC | C, FLP, R FLEET SALES, T&B ENGRG GO# M8851 THRU M8855 | 1992 | 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.