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 301–400 of 427 codes beginning with H. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
HJB P, PARTS PKG, SATURN 'G' 1998 GM sourced
HJC P, PARTS PKG, SATURN 'GL' 1998 GM sourced
HJD P, SGR, R, MERCHANDISED PKG, SATURN 'SE' 1998 GM sourced
HJF P, SGR, R, MERCHANDISED PKG, SATURN LS MANUAL this code has more than one documented meaning — filter by year 1998 GM sourced
HJG P, SGR, R, MERCHANDISED PKG, SATURN LS AUTOMATIC this code has more than one documented meaning — filter by year 1998 GM sourced
HJH P, SGR, R, MERCHANDISED PKG, SATURN LS1 MANUAL this code has more than one documented meaning — filter by year 1998 GM sourced
HJI P, SGR, R, MERCHANDISED PKG, SATURN LS1 AUTOMATIC this code has more than one documented meaning — filter by year 1998 GM sourced
HJJ P, SGR, R, MERCHANDISED PKG, SATURN LW1 MANUAL this code has more than one documented meaning — filter by year 1998 GM sourced
HJK P, SGR, R, MERCHANDISED PKG, SATURN LW1 AUTOMATIC this code has more than one documented meaning — filter by year 1998 GM sourced
HJL P, SGR, R, MERCHANDISED PKG, SATURN LS2 MANUAL 1998 GM sourced
HJM P, SGR, R, MERCHANDISED PKG, SATURN LS2 AUTOMATIC this code has more than one documented meaning — filter by year 1998 GM sourced
HJP P, SGR, R, MERCHANDISED PKG, SATURN LW2 MANUAL 1998 GM sourced
HJQ P, SGR, R, MERCHANDISED PKG, SATURN LW2 AUTOMATIC this code has more than one documented meaning — filter by year 1998 GM sourced
HJS P, PARTS PKG, SPORT, 10402 — GM sourced
HJT Interior Trim Config Leather, Level 2, Jet Black/light Neutral — Reference
HJU Interior Trim Config Leather, Level 4, Purpleblack/jet Black — Reference
HJV Interior Trim Config Cloth, Level 3, Cocoa / Dune — Reference
HJW Interior Trim Config Leather, Level 2, Cocoa/lt Neutral, Var 1 — Reference
HJX Interior Trim Config Cloth, Level 4, Jet Black / Cobalt Red — Reference
HK1 Axle,rear,2.87 Ratio — Reference
HK3 P, RAX, M, AXLE REAR, 6.143 RATIO, 3,500 KG 1998 Provisional
HK9 Axle,rear,5.86 Ratio — Reference
HKA P, SGR, R, MERCHANDISED PKG, SATURN SC1 "RAD" MANUAL 1999 GM sourced
HKB P, SGR, R, MERCHANDISED PKG, SATURN SC1 "RAD" AUTOMATIC 1999 GM sourced
HKC P, SGR, R, MERCHANDISED PKG, SATURN SC2 "RAD" MANUAL 1999 GM sourced
HKD P, SGR, R, MERCHANDISED PKG, SATURN SC2 "RAD" AUTOMATIC 1999 GM sourced
HKF P, PROCESSING, SATURN SC1 MANUAL 1998 GM sourced
HKG P, PROCESSING, SATURN SC1 AUTOMATIC 1998 GM sourced
HKH P, SGR, R, MERCHANDISED PKG, SATURN SL MANUAL 1999 GM sourced
HKJ P, PROCESSING, SATURN SC2 MANUAL 1998 GM sourced
HKK P, PROCESSING, SATURN SC2 AUTOMATIC 1998 GM sourced
HKL P, PROCESSING, SATURN SW1 MANUAL 1998 GM sourced
HKM P, PROCESSING, SATURN SW1 AUTOMATIC 1998 GM sourced
HKN P, SGR, R, MERCHANDISED PKG, SATURN SW1 AUTOMATIC POSTAL 1999 GM sourced
HKP P, SGR, R, MERCHANDISED PKG, SATURN SL1 MANUAL 1999 GM sourced
HKQ P, SGR, R, MERCHANDISED PKG, SATURN SL1 AUTOMATIC 1999 GM sourced
HKR P, SGR, R, MERCHANDISED PKG, SATURN SW2 MANUAL 1999 GM sourced
HKS P, SGR, R, MERCHANDISED PKG, SATURN SW2 AUTOMATIC 1999 GM sourced
HKT P, SGR, R, MERCHANDISED PKG, SATURN SL2 MANUAL 1999 GM sourced
HKU P, SGR, R, MERCHANDISED PKG, SATURN SL2 AUTOMATIC 1999 GM sourced
HL4 Headlamp,leveling Device — Reference
HLA P, SGR, R, MERCHANDISED PKG, SATURN SUV BASE FWD MAN, 531 — GM sourced
HLB P, SGR, R, MERCHANDISED PKG, SATURN SUV MID AWD CVR, 531 — GM sourced
HLC P, SGR, R, MERCHANDISED PKG, SATURN SUV UP AWD V6 CVR, 531 — GM sourced
HLD P, SGR, R, MERCHANDISED PKG, SATURN SUV BASE FWD AUTO, 531 — GM sourced
HLE Merchandised Pkg Performance Conversion — Reference
HLG Family Code, Handling Charge 1988 GM dated
HMA P, SGR, R, MERCHANDISED PKG, SATURN SUV UP FWD V6, 20110 — GM sourced
HNA P, RAX, M, AXLE REAR, 23,000 LB (10,430 KG), EATON 23105S, SINGLE SPEED, 20312 — GM sourced
HNB P, RAX, M, AXLE REAR, 23,000 LB (10,430 KG), EATON 23105D, SINGLE SPEED,DIFF LK, 607 — GM sourced
HNE Equipment Heat & Cooled, Seats & Cupholders — Reference
HNG C, RAX, M, AXLE REAR, 23,000 LB, EATON 23431, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HNL P, TIMER, HORN ALARM OPERATION LIMIT 1999 GM sourced
HOM Fleet Sales Home & Park — Reference
HOR FAMILY CODE, HORN, 10521 — Provisional
HOT P, APP, R, APPEARANCE PACKAGE, GMC "HOT TRUCK" this code has more than one documented meaning — filter by year 1999 GM sourced
HP0 Hybrid Propulsion Not Installed — Reference
HP1 P, HPS, R, HYBRID PROPULSION, ELECTRIC, PARALLEL-PHV, 6KW CONTINOUS POWER,, 110V/2400W OTLT this code has more than one documented meaning — filter by year 1999 GM sourced
HP2 two-mode hybrid propulsion system 2008–2013 GM sourced
HP3 P, RAX, M, AXLE REAR, 45,000 LB (20,412 KG), EATON DSH44, SINGLE SPEED, 10209 — GM sourced
HP4 P, HPS, R, HYBRID PROPULSION, ELECTRIC, PARALLEL/SERIES, 12KW CONTINUOUS POWER, 110V/2400W OTLT, 11128 — GM sourced
HP5 Hybrid Propulsion Electric, Parallel, 20kw Continuous Power — Reference
HP6 Hybrid Propulsion Electric, Parallel, 14kw Continuous Power — Reference
HP7 Hybrid Propulsion Electric, Parallel, 3kw Continuous Power — Reference
HPA P, RAX, M, AXLE REAR, 26,000 LB (11,794 KG), EATON 26105S, SINGLE SPEED, 607 — GM sourced
HPB P, RAX, M, AXLE REAR, 30,000 LB, EATON 30105S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPC P, RAX, M, AXLE REAR, 45,000 LB, EATON DS451P, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPD P, RAX, M, AXLE REAR, 45,000 LB (20,412 KG), EATON DS454P, SINGLE SPEED, 607 — GM sourced
HPE P, RAX, M, AXLE REAR, 40,000 LB (18,144 KG), EATON DS404, SINGLE SPEED, 607 — GM sourced
HPF P, RAX, M, AXLE REAR, 22,000 LB, EATON 22080S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPG P, RAX, M, AXLE REAR, 22,000 LB, EATON 22060S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPH P, RAX, M, AXLE REAR, 22,000 LB, EATON 22060T, TWO SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPI P, RAX, M, AXLE REAR, 34,000 LB (15,422 KG), EATON DS344, SINGLE SPEED, 607 — GM sourced
HPJ P, RAX, M, AXLE REAR, 40,000 LB (18,144 KG), EATON DS404P, SINGLE SPEED, 607 — GM sourced
HPK P, RAX, M, AXLE REAR, 19,000 LB (8,618 KG), EATON 19060S, SINGLE SPEED, 607 — GM sourced
HPL P, RAX, M, AXLE REAR, 19,000 LB (8,618 KG), EATON 19060D, SINGLE SPEED, DIFF LK, 607 — GM sourced
HPM P, RAX, M, AXLE REAR, 19,000 LB (8,618 KG), EATON 19060T, TWO SPEED, 607 — GM sourced
HPN P, RAX, M, AXLE REAR, 21,000 LB (9,527 KG), EATON 21060D, SINGLE SPEED, DIFF LK, 607 — GM sourced
HPO P, RAX, M, AXLE REAR, 34,000 LB, EATON DS344P, SINGLE SPEED 1998 GM sourced
HPP P, RAX, M, AXLE REAR, 21,000 LB (9,527 KG), EATON 21060S, SINGLE SPEED, 607 — GM sourced
HPQ P, RAX, M, AXLE REAR, 23,000 LB, EATON 23080S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPR P, HDL, R, HEADLAMPS, DUAL, RECTANGULAR this code has more than one documented meaning — filter by year 1989 GM sourced
HPS Family Code, Hybrid Propulsion 1999 GM dated
HPT P, RAX, M, AXLE REAR, 23,000 LB (9,527 KG), EATON 23090S, SINGLE SPEED, 607 — GM sourced
HPU P, RAX, M, AXLE REAR, 26,000 LB (11,694 KG), EATON, 26090D, SINGLE SPEEDDIFF LK, 915 — GM sourced
HPV P, RAX, M, AXLE REAR, 40,000 LB, EATON DS402, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPW P, RAX, M, AXLE REAR, 22,000 LB, EATON 22070S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPX P, RAX, M, AXLE REAR, 22,000 LB, EATON 22065S, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPY P, RAX, M, AXLE REAR, 22,000 LB, EATON 22065T, TWO SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HPZ P, RAC, R, CONTROL RR AXLE, SHFT, TWO SPEED, ELECTRONIC this code has more than one documented meaning — filter by year 1996 GM sourced
HQK P, RAX, M, AXLE REAR, 40,000 LB, ROCKWELL SQ100P, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HQR P, RAX, M, AXLE REAR, 22,000 LB, ROCKWELL RS-22160, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HQV P, RAX, M, AXLE REAR, 34,000 LB, EATON DS341, SINGLE SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HR1 P, RAC, R, CONTROL RR AXLE, SHFT, FULL AIR, I/P MOUNT this code has more than one documented meaning — filter by year 1990 GM sourced
HR2 P, RAC, R, CONTROL RR AXLE, SHFT, FULL AIR, TRANS LVR MOUNTED this code has more than one documented meaning — filter by year 1999 GM sourced
HRS P, RAX, M, AXLE REAR, 21,000 LB (9,527 KG), EATON 22080D, SINGLE SPEED, DIFF LK, 10217 — Provisional
HRU P, RAX, M, AXLE REAR, 34,000 LB, EATON DT341, TWO SPEED this code has more than one documented meaning — filter by year 1998 GM sourced
HS1 Safety Alert Seat 2026 GM sourced
HT1 Axle Rear 20,060 Lbs. — Reference
HTR Family Code, Hvac System 1999 GM dated

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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