← All owner tools · Decode your own SPID label with the GM RPO decoder
| 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 702 codes beginning with Y. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| Y82 | P, SGR, R, MERCHANDISED PKG, PONTIAC FIREBIRD TRANS AM BASE | 1998 | GM sourced |
| Y83 | Trans AM Package(merchandising Option) | — | Reference |
| Y84 | P, SGR, R, MERCHANDISED PKG, PONTIAC FIREBIRD TRANS AM GTA | 1998 | GM sourced |
| Y85 | MERCHANDISED PKG, BONNEVILLE SSE | — | Provisional |
| Y86 | Camaro 'rs' Package(merchandising Option) | — | Reference |
| Y87 | P, SGR, R, MERCHANDISED PKG, PERFORMANCE ENHANCEMENT | 1994 | GM sourced |
| Y88 | P, SALES PACKAGE, SUN & SOUND, 10104 E, 1 | — | GM sourced |
| Y89 | Merchandised Pkg,firebird SE | — | Reference |
| Y8A | P, GVW, M, GVW RATING, - DELETE, 118 E, 5, 5, A | — | Provisional |
| Y8B | P, RAX, M, AXLE REAR, - DELETE, 118 E, 5, 5, A | — | Provisional |
| Y8C | P, TRM, M, TRIM COMBINATION, - DELETE, 118 E, 5, 5, A | — | GM sourced |
| Y8D | P, SPP, R, PACKAGE, SPECIAL VEHICLE ECUADOR, 915 E, 5, 5, A | — | Provisional |
| Y8E | P, ORNAMENTATION, EMBLEM "CONQUEST", 427 E, 5, 5, A | — | Provisional |
| Y8F | P, SPP, R, PACKAGE, SPECIAL SERIES "CHALLENGE", 1002 E, 5, 5, A | — | Provisional |
| Y8G | P, ORNAMENTATION, NAME PLATE "SWING", 511 E, 5, 5, A | — | Provisional |
| Y8H | P, ORNAMENTATION, NAME PLATE "CHEVY", 511 E, 5, 5, A | — | Provisional |
| Y8J | P, SPP, R, PACKAGE, ARG AND EXPORT MARKET-CORSA GL | 1998 | Provisional |
| Y8K | P, SPP, R, PACKAGE, DELTA MARKET-CORSA GL | 1998 | Provisional |
| Y8L | P, CND, R, CONVENIENCE PKG, BOX FACE LIFT, 726 E, 5, 5, A | — | Provisional |
| Y8M | P, NPC, M, CONVERSION NAME PLT, "MILENIUM" | 1999 | Provisional |
| Y8N | P, SPP, R, PACKAGE, SPECIAL SERIES "RODEIO", 20218 E, 5, 5, A | — | Provisional |
| Y8P | P, PARTS, SHIPPED TO VENEZUELA/COLOMBIA, 825 E, 5, 5, A | — | Provisional |
| Y8Q | P, SPP, R, PACKAGE, ARG MARKET-CORSA POPULAR | 1999 | Provisional |
| Y8R | P, SPP, R, PACKAGE, GAMMA "LEVEL 0" | 1999 | Provisional |
| Y8S | P, SPP, R, PACKAGE, GAMMA "LEVEL 1" | 1999 | Provisional |
| Y8T | P, SPP, R, PACKAGE, GAMMA "LEVEL 3" | 1999 | Provisional |
| Y8U | P, PARTS, SHIPPED TO VENEZUELA/ECUADOR, 825 E, 5, 5, A | — | Provisional |
| Y8X | P, FUEL ECONOMY, ENGINE IMPROVEMENT, 1101 E, 5, 5, A | — | GM sourced |
| Y8Y | P, IDENTIFICATION, BREAKING POINT 2001 1/2 M.Y., 1109 P, 5, 5, A | — | Provisional |
| Y8Z | P, SPP, R, PACKAGE, ASTRA "CD", 20306 E, 5, 5, A | — | Provisional |
| Y91 | P, SGR, R, MERCHANDISED PKG, LUXURY EDITION this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| Y92 | P, SGR, R, MERCHANDISED PKG, SPECIAL EDITION this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| Y93 | P, SGR, R, MERCHANDISED PKG, GLS this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| Y94 | P, SGR, R, MERCHANDISED PKG, CD | 1993 | GM sourced |
| Y95 | Rallye Option | — | Reference |
| Y96 | Conversion Name Plate Holden | — | Reference |
| Y97 | P, MAR, M, MARKET BRAND, RENAULT, 10507 E, 0 | — | Provisional |
| Y98 | P, CONTROL, RIDE SYSTEM ELECTRONIC | 1990 | GM sourced |
| Y99 | Conversion Name Plt Saab this code has more than one documented meaning — filter by year | — | Reference |
| Y9A | P, DIRECT SALES, POWERTRAIN GMB, 20204 E, 5, 5, A | — | Provisional |
| Y9B | P, DIRECT SALES, POWERTRAIN FIAT, 20204 E, 5, 5, A | — | Provisional |
| Y9C | P, SPP, R, PACKAGE, GAMMA "CD" - VAR. 1, 929 E, 5, 5, A | — | Provisional |
| Y9E | P, PARTS PKG, VEHICLE PROCESS PREPARATION FOR EXPORT, 20809 E, 5, 5, A | — | Provisional |
| Y9F | P, NPC, M, CONVERSION NAME PLT, "CHALLENGE", 512 E, 5, 5, A | — | Provisional |
| Y9G | P, SPP, R, PACKAGE, "BASE LEVEL" VERSION, 20306 E, 5, 5, A | — | GM sourced |
| Y9H | P, SPP, R, PACKAGE, "MID LEVEL" VERSION, 20306 E, 5, 5, A | — | Provisional |
| Y9I | P, SPP, R, PACKAGE, "UP LEVEL" VERSION, 20306 E, 5, 5, A | — | GM sourced |
| Y9J | P, IDENTIFICATION, BREAKING POINT 2002 1/2 M.Y, 10301 E, 5, 5, A | — | Provisional |
| Y9K | P, SPP, R, PACKAGE, GAMMA "L" - VAR. 1, 10220 E, 5, 5, A | — | Provisional |
| Y9L | P, SPP, R, PACKAGE, GAMMA "GL" - VAR. 1 | 1999 | Provisional |
| Y9M | P, SPP, R, PACKAGE, SUP MEXICO VERSION - GMB | 1999 | Provisional |
| Y9N | P, SPP, R, PACKAGE, SPECIAL SERIES "ADVANTAGE", 10301 E, 5, 5, A | — | Provisional |
| Y9P | P, SPP, R, PACKAGE, PICK-UP CORSA SPORT, 10221 E, 5, 5, A | — | Provisional |
| Y9Q | P, NPC, M, CONVERSION NAME PLT, "ADVANTAGE", 10301 E, 5, 5, A | — | Provisional |
| Y9R | P, SPP, R, PACKAGE, SPECIAL SERIES "SUNNY", 10731 E, 5, 5, A | — | Provisional |
| Y9S | P, SPP, R, PACKAGE, GAMMA "GLS" - VAR. 2 | 1999 | Provisional |
| Y9T | P, SPP, R PACKAGE, GMB-CELTA, "SUPER", 10906 E 5, 5, A | — | Provisional |
| Y9U | P, NPC, M CONVERSION NAME PLT, "SUNNY", 10731 E 5, 5, A | — | Provisional |
| Y9V | P, ORNAMENTATION, NAME PLATE "CLASSIC", 20111 E 5, 5, A | — | Provisional |
| Y9W | P, SPP, R PACKAGE, GAMMA "WIND" - VAR. 2 | 1999 | Provisional |
| Y9X | P, NPC, M CONVERSION NAME PLT, "EXPRESSION", 10502 E 5, 5, A | — | Provisional |
| Y9Y | P, ORNAMENTATION, DECAL "CHEVROLET", 10221 E 5, 5, A | — | GM sourced |
| Y9Z | P, SPP, R PACKAGE, "HIGH UP LEVEL" VERSION, 20426 E 5, 5, A | — | Provisional |
| YA1 | Decor Package,luv Truck | — | Reference |
| YA2 | P, DRR, M DOOR SIDE, REAR, SLIDING this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YA3 | P, DOOR, MANUAL, SLIDING, LH | 1998 | Provisional |
| YA4 | P, DOOR, MANUAL, SLIDING, RH | 1998 | Provisional |
| YA5 | P, DOOR, SLIDING - DELETE | 1999 | Provisional |
| YA6 | P, SALES PACKAGE, BODY OVERRIDE, CALIFORNIA | 1991 | GM sourced |
| YA7 | P, TEST, EMISSION, CALIFORNIA ASSEMBLY LINE | 1989 | GM sourced |
| YA9 | P, AXLE, 3,400 LB this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YAA | Tire Rear P285/40zr17 BL R/pe ST TL Hw4 | — | Reference |
| YAB | P, RTR, M TIRE REAR, 245/40ZR17-95Y BW ST TL HW4, 20911 | — | Provisional |
| YAC | P, RTR, M TIRE REAR, P245/40ZR18-94Y BW ST TL HW4, 20911 | — | GM sourced |
| YAN | P, RTR, M TIRE REAR, P265/70R17-113S BW R/PE ST TL AL2 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YAP | P, RTR, M TIRE REAR, 7.50R-16/F 12PR BL R/ST TT HWY | 1997 | Provisional |
| YAQ | P, RTR, M TIRE REAR, P265/70R17-113H BW R/PE ST TL AL2 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YAS | P, RTR, M TIRE REAR, P265/70R17-113S WOL R/PE ST TL AL2 this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| YAU | Tire Rear- P275/40 Zr17/n BL R/pe ST TL Hw4 (9591413) | — | Reference |
| YAX | Tire Rear P265/75r16 SL 114t BW AT | — | Reference |
| YB1 | P, PLATE, ENGINE IDENTIFICATION this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| YB2 | P, PLATE, ECE APPROVAL | 1993 | GM sourced |
| YB3 | P, PLATE, CLUTCH DRIVEN, PART OF ENG - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YB4 | P, PLATE, SEAT BELT ANCHOR, AUSTRIA this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| YB5 | P, BUILDOUT, C.O. | 1991 | GM sourced |
| YB6 | P, AXLE, (BASE EQUIP), (KEEP AS PROCESSING OPTION), 216 | — | Provisional |
| YB7 | P, SPRING FRONT, BASE EQUIPMENT. | 1997 | GM sourced |
| YB8 | P, SPRING, RR, BASE EQUIPMENT. | 1997 | GM sourced |
| YB9 | P, PAINT PROCESS, INTERIOR - DELETE | 1998 | GM sourced |
| YBE | Tire Rear-(used With Zr1) | — | Reference |
| YBF | P, RTR, M TIRE REAR, P235/70R15-102S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YBG | P, RTR, M TIRE REAR, P235/70R15-102S WOL R/PE ST TL ALS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YBK | Tire Rear Lt245/75r16/c BL R/pe ST Tbl Als (9591407) | — | Reference |
| YBL | Tire Rear Lt245/75r16/c WS R/pe ST Tbl Als (9591408) | — | Reference |
| YBN | P, RTR, M TIRE REAR, LT245/75R16/C BW R/PE ST TL OOR this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YBO | P, RTR, M TIRE REAR, 215/80R16 6PR BL TL RADIAL | 1997 | GM sourced |
| YBX | P, RTR, M TIRE REAR, LT245/75R16/C WOL R/PE ST TL OOR this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YBY | P, RTR, M TIRE REAR, LT245/75R16/D BW R/PE ST TL A/T 114S | 1997 | Provisional |
| YC0 | P, CND, R CONVENIENCE PKG, DECOR LEVEL (BASE) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| YC1 | P, CND, R CONVENIENCE PKG, DECOR LEVEL #1 this code has more than one documented meaning — filter by year | 1989 | 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.