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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 201–300 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 |
|---|---|---|---|
| T6Z | P, PNO, M, PANEL (OPEL), TRIM, INNER, STANDARD, VAR 4 | 1999 | Provisional |
| T70 | P, DRL, R, LAMP SYSTEM, DRIVING, LONG RANGE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| T71 | P, ORNAMENTATION, HEADLAMPS, DARK LENSES, 523 E, 5 | — | Provisional |
| T72 | P, HDL, R, HEADLAMPS, LH RULE OF THE ROAD | 1998 | GM sourced |
| T73 | P, HDL, R, HEADLAMPS, RH RULE OF THE ROAD | 1997 | GM sourced |
| T74 | P, HEADLAMPS CONTROL, AUTOMATIC, DELAY this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T75 | P, HDL, R, HEADLAMPS, AMBER this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| T76 | P, HDL, R, HEADLAMPS, REPLACEABLE BULB TYPE this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T77 | P, HDL, R, HEADLAMPS, 2 | 1983 | GM sourced |
| T78 | P, HEADLAMPS CONTROL, - DELETE | 1998 | GM sourced |
| T79 | P, LAMP, FOG, RR this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T7A | P, SPP, R, PACKAGE, CHEVY "VALUE LEADER" | 1998 | GM sourced |
| T7B | P, SPP, R, PACKAGE, TAXI | 1997 | GM sourced |
| T7G | P, SPP, R, PACKAGE, SPECIAL SERIES "MILLENNIUM" | 1999 | GM sourced |
| T7H | P, PARTS PKG, MISCELLANEOUS PARTS FOR SPECIAL SERIES-MILLENNIUM | 1999 | GM sourced |
| T7J | P, SPP, R, PACKAGE, CAVALIER POLICE CONVERSION, 1113 | — | Provisional |
| T7L | P, EQUIPMENT, MISC EQUIP FOR CENTRAL AMERICA (GMM CONTROLLED), 10327 | — | Provisional |
| T7N | P, PARTS PKG, MISCELLANEUS PARTS FOR POLICE PKG, 1113 | — | Provisional |
| T7P | P, EQUIPMENT, MISC EQUIP FOR CHILE this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T7Q | P, EQUIPMENT, MISC EQUIP FOR PERU | 1997 | GM sourced |
| T7R | P, EQUIPMENT, MISC EQUIP FOR ECUADOR | 1997 | GM sourced |
| T7S | P, SPP, R, PACKAGE, CHEVY JOY LUXURY | 1997 | GM sourced |
| T7T | P, SPP, R, PACKAGE, CHEVY SWING LUXURY | 1997 | GM sourced |
| T7U | P, SPP, R, PACKAGE, CHEVY MONZA LUXURY | 1997 | GM sourced |
| T7V | P, FIRE EXTINGUISHER, 2 KG DRY CHEMICAL this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| T7W | P, FIRE EXTINGUISHER, 0.75 KG DRY CHEMICAL | 1997 | GM sourced |
| T7X | P, FIRE EXTINGUISHER, 1 KG DRY CHEMICAL | 1996 | Provisional |
| T80 | P, HDL, R, HEADLAMPS, AUTO BEAM CONT this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T81 | P, LAMP, TAIL & STOP, DELUXE this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T82 | P, HEADLAMPS CONTROL, AUTOMATIC ON-OFF this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T83 | P, HDL, R, HEADLAMPS, DR, SPECIAL this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T84 | P, HDL, R, HEADLAMPS, RH RULE OF THE ROAD, E MARK this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T85 | P, HDL, R, HEADLAMPS, LH RULE OF THE ROAD, E MARK | 1997 | GM sourced |
| T86 | P, LAMP, BACKUP, PAINTED this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| T87 | P, LAMP, CORNERING this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| T88 | P, LAMP, PARKING this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| T89 | P, LAMP, TAIL & STOP, EXPORT this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T8A | P, LICENSE PLATE, FRT & RR MOUNTING PKG | 1993 | GM sourced |
| T8B | P, HANDLE, FRT SEAT ASSIST this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| T8C | P, RDC, R, ROOF, RAIL | 1993 | GM sourced |
| T8D | P, CND, R, CONVENIENCE PKG, FOR CHEVY | 1993 | GM sourced |
| T8E | P, CND, R, CONVENIENCE PKG, FOR SUNFIRE | 1996 | GM sourced |
| T8F | P, CND, R, CONVENIENCE PKG, FOR SUNFIRE GT | 1996 | GM sourced |
| T8H | P, PARTS PKG, MISCELLANEOUS PARTS FOR PKG SUBURBAN SLT | 1996 | GM sourced |
| T8M | P, PARTS PKG, MISCELLANEOUS PARTS FOR TYPICAL SUBURBAN DELUXE | 1992 | GM sourced |
| T8O | P, PARTS PKG, MISCELLANEOUS PARTS FOR F.S. BLAZER DELUXE | 1998 | GM sourced |
| T8P | P, TRN, M, TRANSMISSION, MAN 4 SPD, TREMEC, 82.5 MM, 3.81 1ST | 1997 | GM sourced |
| T8Q | P, PARTS PKG, MISCELLANEOUS PARTS FOR TAXI this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T8R | P, TRN, M, TRANSMISSION, MAN 4 SPD, TREMEC, TR3440, 83 MM, 3.82 1ST | 1997 | GM sourced |
| T8S | Tray Captain Seat,folding | — | Reference |
| T8U | P, NPC, M, CONVERSION NAME PLT, "CELTA", 20201 | — | Provisional |
| T8V | P, NPC, M, CONVERSION NAME PLT, "MONZA" | 1998 | GM sourced |
| T8Y | P, PARTS PKG, MISCELLANEOUS PARTS OF PKG SILVERADO SLT | 1996 | GM sourced |
| T8Z | Buckle to Drive | 2026 | GM sourced |
| T90 | P, LAMP, SIGNALING & MARKER, EXPORT this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T91 | P, LAMP, CORNERING - DELETE | 1998 | GM sourced |
| T92 | P, HEADLAMPS CONTROL, BEAM, MODIFICATION this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| T93 | P, LAMP, TAIL & STOP, SPECIAL this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| T94 | P, HEADLAMPS CONTROL, LH RULE OF THE ROAD | 1998 | GM sourced |
| T95 | Headlamps, Adaptive Forward Lighting | 2026 | GM sourced |
| T96 | P, LAMP, FOG, FRT this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| T97 | P, HDL, R, HEADLAMPS, HIGH INTENSITY DISCHARGE (XENON) | 1998 | GM sourced |
| T98 | P, STAMPING, VEHICLE IDENTIFICATION NUMBER this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| T99 | P, ORNAMENTATION, EXTR, HEADLAMPS, CLEAR LENS | 1999 | Provisional |
| T9A | P, PNO, M, PANEL (OPEL), TRIM, INNER, ULTRA DELUXE, VAR.1 | 1999 | Provisional |
| T9B | P, IDENTIFICATION, VEH BREAKPOINT 2001 M.Y. SC - JUNE IMPLEMENTATION this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| T9C | P, PNO, M, PANEL (OPEL), TRIM, INNER, MIDLEVEL, VAR 1 | 1999 | Provisional |
| T9D | P, PNO, M, PANEL (OPEL), TRIM, INNER, UPLEVEL, VAR 1 | 1999 | Provisional |
| T9E | P, LAMP, FOG, ECE REQUIREMENTS, 20221 E, 1 | — | GM sourced |
| T9F | P, RADIO EQUIPMENT, FRAME MOUNT, STORAGE BOX | 1999 | Provisional |
| T9G | P, LAMP, TAIL, STOP, TURN SIGNAL, CHASSIS CAB | 1999 | GM sourced |
| T9H | P, PROVISIONS, LAMP, FOG, FRT this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| T9I | P, NPC, M, CONVERSION NAME PLT, "DESIGN", 20322 E, 0 | — | Provisional |
| T9J | P, PNO, M, PANEL (OPEL), TRIM, INNER, VELOUR TYPE, 718 E, 0 | — | Provisional |
| T9K | P, PNO, M, PANEL (OPEL), TRIM, INNER, AMANA, 407 E, 0 | — | Provisional |
| T9L | P, PNO, M, PANEL (OPEL), TRIM, INNER, MALTA, 407 E, 0 | — | Provisional |
| T9M | Trim Pnl Inr, Elba Saturn Astra | — | Reference |
| T9N | P, PNO, M, PANEL (OPEL), TRIM, INNER, LEATHER, MONDIAL, 10420 E, 0 | — | Provisional |
| T9P | P, ORNAMENTATION, HEADLAMPS, HOUSING, DARK, 10926 E, 0 | — | Provisional |
| T9Q | P, ORNAMENTATION, LETTERING "GSI" REAR, 11016 E, 0 | — | Provisional |
| T9R | P, PNO, M, PANEL (OPEL), TRIM, INNER, LEATHER, NAPPA SOFT, 20409 E, 0 | — | Provisional |
| T9S | P, LAMP, INTR, FRT DR, ILLUMINATED, ACCESSORIES, 20418 E, 0 | — | GM sourced |
| T9T | Ornamentation Lettering, 'ecoflex' Rear | — | Reference |
| T9U | Lamp Tail & Stop, Amber Turn Signal | — | Reference |
| T9V | P, NPC, M, CONVERSION NAME PLT, "CDXI", 20708 E, 8 | — | Provisional |
| T9W | Trim Pnl Inr, Tabita Saturn Astra | — | Reference |
| T9X | P, PNO, M, PANEL (OPEL), TRIM, INNER, ALPHA, 20813 E, 0 | — | Provisional |
| T9Y | P, CONVERSION, UPHOLSTERY FABRIC, ALCANTARA, BLUE, 21030 E, 0 | — | Provisional |
| T9Z | P, CONVERSION, UPHOLSTERY FABRIC, ALCANTARA, GREY, 21030 E, 0 | — | Provisional |
| TA0 | Fleet Sales Ryder GO #'s R0122, R0156, R0163 & R0165 | — | Reference |
| TA1 | P, FIN, R, FLEET INCENTIVE, TOSCO (N/W-TRK CKMLST), 10130 | — | Provisional |
| TA2 | P, FIN, R, FLEET INCENTIVE, GENUINE PARTS - NAPA (G/H/J/N/U/W-TRK CKGMLPST), 10621 | — | Provisional |
| TA3 | P, FIN, R, FLEET INCENTIVE, ELWYN INC. (B/J/S/U/W-TRK GMLP), 21001 | — | Provisional |
| TA4 | P, FIN, R, FLEET INCENTIVE, PABST BREWING COMPANY (U/W), 10611 | — | Provisional |
| TA5 | P, FIN, R, FLEET INCENTIVE, SEARS ROEBUCK & CO (J/N/W-TRK CKGMST) | 1999 | GM sourced |
| TA6 | P, FIN, R, FLEET INCENTIVE, PENSKE TRUCK LEASING (-TRK CKGMPST) this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| TA7 | P, FIN, R, FLEET INCENTIVE, CONTRACTORS 2000 (-TRK CKGML), 20912 | — | Provisional |
| TA8 | P, FIN, R, FLEET INCENTIVE, ARCHER DANIELS MIDLAND CO. (K/N/U/W-TRK CKGST), 21101 | — | Provisional |
| TA9 | P, FIN, R, FLEET INCENTIVE, AMERICAN COIN (J/U-TRK CKGJMLST), 20812 this code has more than one documented meaning — filter by year | — | GM sourced |
| TAA | P, PNO, M, PANEL (OPEL), TRIM, INNER, GRAND LUXE | 1999 | Provisional |
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.