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 401–500 of 702 codes beginning with Y. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
YGM Tire Rear Lt265/75r16/c Wol R/pe ST Oor(9591658) — Reference
YGQ Tire Rear P225/50r18-94w BW TL Hw4 — Reference
YGR P, RTR, M, TIRE REAR, P235/50R17-95S BW TL AL2 this code has more than one documented meaning — filter by year 1998 GM sourced
YGS P, RTR, M, TIRE REAR, P295/40R20-101H BW ST TL HW4, 10119 — GM sourced
YGY P, RTR, M, TIRE REAR, P205/70R15-95S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
YH1 P, CONVERSION, PREPARATION, UNION CITY BODY 1991 GM sourced
YH2 P, PROVISIONS, RADIUS LEAF RR SPRINGS, 725 — GM sourced
YH3 P, PROVISIONS, AIR RR SPRINGS, 725 — GM sourced
YHA P, RTR, M, TIRE REAR, P235/75R15/X BL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
YHB P, RTR, M, TIRE REAR, P235/75R15/X WS2 R/PE ST TL ALS this code has more than one documented meaning — filter by year 1995 GM sourced
YHC P, RTR, M, TIRE REAR, P235/65R17-103H BW TL AL3, 11120 — Provisional
YHD P, RTR, M, TIRE REAR, P255/60R17-105H BW TL AL3, 11120 — GM sourced
YHE Tire Rear Lt225/75r16/c BL R/pe ST Als(9591202) — Reference
YHF P, RTR, M, TIRE REAR, LT225/75R16/E BL R/PE ST ALS this code has more than one documented meaning — filter by year 1988 GM sourced
YHH P, RTR, M, TIRE REAR, LT245/75R16/E BW R/PE ST TL ALS 120Q this code has more than one documented meaning — filter by year 1997 GM sourced
YHJ Tire Rear Lt225/75r16/c BL R/pe ST Oor(9591209) — Reference
YHM P, RTR, M, TIRE REAR, P235/75R15-108S WOL R/PE ST TL ALS (X/LOAD) this code has more than one documented meaning — filter by year 1997 GM sourced
YHN Tire Rear Lt225/75r16/c Wol R/pe ST Oor(9591210) — Reference
YHP P, RTR, M, TIRE REAR, LT225/75R16/D BL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
YHQ Tire Rear Lt225/75r16/d Xnw R/pe ST TL Als (9591298) — Reference
YHR P, RTR, M, TIRE REAR, LT225/75R16/D BL R/PE ST TL OOR this code has more than one documented meaning — filter by year 1988 GM sourced
YHS P, RTR, M, TIRE REAR, P265/75R16-114H BW R/PE ST TL AT "A" TEMP RATING this code has more than one documented meaning — filter by year 1998 GM sourced
YHT Tire Rear 265/75r16-116h BW TL AT — Reference
YHV Tire Rear Lt225/75r16/c WS R/ PE ST Als (9591301) — Reference
YHW P, RTR, M, TIRE REAR, LT315/70R17 BW TL OOR, 522 — GM sourced
YHX Tire Rr-p205/70r14/ — Reference
YHY Tire Rr-lt315/70r17/d BW TL All Terrain this code has more than one documented meaning — filter by year — Reference
YHZ Tire Rear Lt315/70r17/d BW TL Mud-terrain — Reference
YIB Tire Rear P245/60hr15/n Wol R/pe ST TL Hwy Al3 (9591430) — Reference
YID Tire Rear Lt195/75r14/c BL R/pe ST TL Als (15568334) — Reference
YIK P, RTR, M, TIRE REAR, P245/70R16-106S BW PE/ST TL OOR this code has more than one documented meaning — filter by year 1999 GM sourced
YIN P, RTR, M, TIRE REAR, P205/70R15-95S BW R/PE ST TL AL2 this code has more than one documented meaning — filter by year 1997 GM sourced
YIT Tire Rear Lt265/75r16/e BW R/pe ST TL Oor (123/120r) — Reference
YIZ P, PLT, R, PLANT CODE, YIZHENG, CHINA, 21011 — Provisional
YJ1 P, EQUIPMENT, REGULAR BODY OPTIONS 1991 GM sourced
YJ2 P, EQUIPMENT, SPECIAL BODY OPTIONS 1991 GM sourced
YJ3 P, DECAL, 4X4 this code has more than one documented meaning — filter by year 1990 GM sourced
YJ6 Decor Package,economy — Reference
YJ7 P, IDENTIFICATION, OPTIONAL MATL, OXYGEN SENSOR 1999 GM sourced
YJ8 P, IDENTIFICATION, OPTIONAL MATL, STEERING SYSTEM this code has more than one documented meaning — filter by year 1999 GM sourced
YJB C, RTR, M, TIRE REAR, 225/70R17.5 BW R/ST TL OOR 1995 Provisional
YJC P, RTR, M, TIRE REAR, 275/70R22.5 BW R/ST TL OOR 1995 Provisional
YJD P, RTR, M, TIRE REAR, 275/70R22.5 R TL LOW PROFILE, 114 E 8 — Provisional
YJE C, RTR, M, TIRE REAR, 245/700R500A 100W BW (PAX TIRE), 10621 — GM sourced
YJJ P, RTR, M, TIRE REAR, 31X10.50R15LT/C BW R/PE ST TL OOR this code has more than one documented meaning — filter by year 1990 GM sourced
YJL Tire Rear P205/75r15/n Wol R/pe ST TL Oor (9591082) — Reference
YJM P, RTR, M, TIRE REAR, P265/70R17-113S WOL R/PE ST TL OOR this code has more than one documented meaning — filter by year 1999 GM sourced
YJP P, RTR, M, TIRE REAR, P265/70R17-113S BW R/PE ST TL OOR this code has more than one documented meaning — filter by year 1998 GM sourced
YJT Tire Rear — Reference
YK2 P, VEHICLE, ORDER CHANGE 1989 GM sourced
YK3 Package,front And Rear Shock Absorber And Elimpitch — Reference
YK6 C, IDENTIFICATION, (SEO) 1998 GM sourced
YK7 P, IDENTIFICATION, MAJOR COMPONENTS SERIAL NUMBERS RECORDING, 10217 — Provisional
YK8 P, IDENTIFICATION, EFFECTIVE POINT CONTROL-INTERIM, 20201 E 0 — GM sourced
YK9 Not Equipped with Dynamic Fuel Management 2022–2023 Provisional
YKC P, RTR, M, TIRE REAR, P215/65R16-96S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
YKG P, RTR, M, TIRE REAR, P235/65R16-101S BW R/PE ST TL AL2 this code has more than one documented meaning — filter by year 1998 GM sourced
YKI Tire Rear P235/65r16-101s Wol ST TL Al2 — Reference
YKK P, RTR, M, TIRE REAR, 7.00RX16 8PR BW TT RADIAL HWY, 209 E 8 — Provisional
YKL P, RTR, M, TIRE REAR, 7.50RX16 8PR BW TT RADIAL HWY, 209 E 8 — Provisional
YKM P, RTR, M, TIRE REAR, 7.50RX16 12PR BW LT TT RADIAL HWY, 209 E 8 — Provisional
YKN P, RTR, M, TIRE REAR, P215/70R16-99S BW PE/ST TL AL2 this code has more than one documented meaning — filter by year 1999 GM sourced
YKQ P, RTR, M, TIRE REAR, 175RX14 8PR BW TT LT RADIAL HWY, 210 E 8 — Provisional
YKR P, RTR, M, TIRE REAR, P245/45R18-96W BW R/PE ST TL AL3, 20510 — GM sourced
YKS P, RTR, M, TIRE REAR, P235/50R17-95V BW R/PE ST TL AL3, 20305 — Provisional
YKU Tire Rear P235/50r18-97h BW R/pe ST Al3 — Reference
YKZ P, RTR, M, TIRE REAR, 195/60R15-87V TL R/ST, 10201 E 5 — Provisional
YL0 Speaker,high Impedance — Reference
YL1 Upholstery,leather/vinyl this code has more than one documented meaning — filter by year — Reference
YL2 P, PAINT SPECIAL, FIREMIST 1994 GM sourced
YL3 P, CCT, R, PAINT, SPECIAL PEARLMIST 1996 GM sourced
YL4 Custom Edition, includes (RCV) 18 inch painted aluminum wheels and (RKX) P265/65R18 tires 2019 Reference
YL5 P, HLG, R, HANDLING CHARGE, HAMTRAMCK ASM TO SUPERIOR COACH IN LIMA, OH WITH FINAL SHIP THRU ORION ASM 1998 GM sourced
YL6 P, STC, R, STRIPE COLOR, ACCENT - DELETE 1998 GM sourced
YL7 P, CBB, R, COMMERCIAL BODY, BUILDER S & S COACH 1994 GM sourced
YL9 Commercial Body Builder(hess) — Reference
YLB P, RTR, M, TIRE REAR, LT285/75R16/C BW ST TL OOR, 20429 — GM sourced
YLF Tire Rear 11.00-20.0/h 16pr BL Bias TT — Reference
YLH P, RTR, M, TIRE REAR, LT265/70R17/D BW ST TL ALS this code has more than one documented meaning — filter by year 1999 GM sourced
YLI Tire Rear 225/75r15 BW TL Als Type 'c' — Reference
YLJ P, RTR, M, TIRE REAR, P235/60R17-100S BW R/PE ST TL AL2, 125 — GM sourced
YLK P, RTR, M, TIRE REAR, P235/60R17-103S WOL R/PE ST TL AL2, 125 — Provisional
YLL P, RTR, M, TIRE REAR, LT265/70R17/D WOL ST TL ALS this code has more than one documented meaning — filter by year 1999 GM sourced
YLN P, RTR, M, TIRE REAR, 235/70R15-103H BW TL HWY this code has more than one documented meaning — filter by year 1996 GM sourced
YLO Tire Rear 235/70r15 BW TL Oor — Reference
YLP P, RTR, M, TIRE REAR, LT245/75R16/E BW R/PE ST TL ALS 120/116S, 1218 — GM sourced
YLS P, RTR, M, TIRE REAR, LT245/75R16/E BW R/PE ST TL OOR 120/116S, 1218 — GM sourced
YLT Tire Rear P235/60r17-100s Wol ST TL Al2 — Reference
YM0 P, PROCESSING, FACTORY SALES 1994 Provisional
YM1 P, PROCESSING, PRICE SHEET, CADILLAC ON-PREFERENCE 1994 Provisional
YM2 P, FLEET PROCESSING, NATIONAL ORDERS 1994 Provisional
YM3 P, PROCESSING, DEALER ORDERS 1994 Provisional
YM4 P, PROCESSING, ZONE OFFICE ORDERS 1994 Provisional
YM5 P, STP, R, STRIPE, ACCENT - DELETE 1998 GM sourced
YM6 P, PROCESSING, STOCK SALES 1994 GM sourced
YM7 P, FLEET PROCESSING, LOCAL COMMERCIAL ORDERS 1994 Provisional
YM8 Identification Limited Personalization Option /lpo — Reference
YM9 P, PROCESSING, ZONE COMPANY CAR 1994 Provisional
YMB Tire Rear 10.00-22.5/e 10pr BL Bias TL — Reference
YMC Tire Rear P245/45zr17 BW R/pe ST TL Hw4 — 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.

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