GM RPO Code Database

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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 701–800 of 922 codes beginning with U. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
UQ5 P, SPR, M, SPEAKER SYSTEM, 4, DUAL FRT DR MTD, DUAL EXTD RGE QTR MNTD this code has more than one documented meaning — filter by year 1983 GM sourced
UQ6 P, SPR, M, SPEAKER SYSTEM, 11, QUAD FRT DR MTD, QUAD RR DR MTD, DUAL RR PACKAGE SHELF, CENTER I/P, AMPLIFIER 1993 GM sourced
UQ7 P, SPR, M, SPEAKER SYSTEM, PREMIUM PERFORMANCE, ENHANCED AUDIO, BOSE, 407 — GM sourced
UQ8 P, SPR, M, SPEAKER SYSTEM, 4, DUAL FRT EXTD RGE, DUAL EXTD RGE PKG SHELF/QTR 1985 GM sourced
UQ9 P, SPR, M, SPEAKER SYSTEM, - DELETE this code has more than one documented meaning — filter by year 1998 GM sourced
UQA Bose Sound System, premium 7-speaker system this code has more than one documented meaning — filter by year 2026 GM sourced
UQB Speaker Rr, Dual, Aux, Cargo Area — Reference
UQD Radio Am/fm Stereo, Seek/scan, Auto Rev Music Search Compact Disc, Mp3, Equalizer, Etr, D/din — Reference
UQE Radio Am/fm Stereo, Seek/scan, Cd, Etr, Rds, S/din — Reference
UQF Audio system feature, 6-speaker system 2026 GM sourced
UQG Speaker System Enhanced Audio With Amplifier — Reference
UQH Audio system feature, AKG Studio Reference 38-speaker system 2026 GM sourced
UQI Wireless Interface Short Range, Enhanced Phone Interface — Reference
UQJ Restraint Provisions Child, Isofix 2 Point Only — Reference
UQK Restraint Provisions Child, Isofix 2 Point Only,point/latch(inc 2 Top — Reference
UQL Restraint Provisions Child, Isofix 2 Point Only,point/latch(inc 3 Top — Reference
UQM Radio Am/fm Stereo, Seek/scan, Auto Rev Cass, Cdp, TV — Reference
UQN Radio Am/fm Stereo, Seek/scan, Auto Rev Cass, Cdp, MP3 TV — Reference
UQP Audio system feature, Bose 18-speaker Surround with CenterPoint 2026 GM sourced
UQQ Speaker System Standard, Single — Reference
UQS Bose Premium Series with 12-speaker system 2026 GM sourced
UQT Recorder Vehicle Performance — Reference
UQU Wireless Interface Short Range, Music Navigator, Streaming Audio — Reference
UR1 P, RDO, M RADIO, AM/FM STEREO, SEEK, MULTI CD, ETR, PHONE, AVECS, FADER 1997 Provisional
UR2 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, RDS, MULTI CD, ETR, MP3, AUTO TONE, CLOCK, VOICE REC, WIRELESS DEVICE CONN, 20827 E, 4 — GM sourced
UR3 P, INDICATOR, FUEL ECONOMY this code has more than one documented meaning — filter by year 1983 GM sourced
UR4 Gage,turbo Boost — Reference
UR5 P, INDICATOR, LOW ENGINE OIL 1987 GM sourced
UR6 P, RDO, M RADIO, AM/FM STEREO, SEEK, CD, ETR, HPS, PHONE,, NAVIGATION, FADER 1997 Provisional
UR7 P, RDO, M RADIO, AM/FM STEREO, SEEK, MULTI CD, ETR, PHONE,, NAVIGATION, FADER 1997 Provisional
UR8 P, RDO, M RADIO, AM/FM STEREO, SEEK, MULTI CD, ETR, HPS, PHONE, NAVIGATION, FADER 1997 Provisional
UR9 P, RDO, M RADIO, AM/FM STEREO, AUTO REV CASSETTE, MULTIPLE COMPACT DISC, ETR, DOLBY 1998 GM sourced
URA Radio Am/fm Stereo, Seek, Cd, Etr, Fader W/o Rsa Output — Reference
URB Radio Am/fm Stereo, Seek/scan, Dvd, Cd, Clock Etr, Navigation, Voice Rec — Reference
URC Switch Flexride Mode System — Reference
URD GMC Premium information Display, 13.4 inch diagonal Multicolor touch screen 2026 GM sourced
URF Driver Information Center, 11 inch diagonal multi-color digital display 2026 GM sourced
URG Driver Information Center 2026 GM sourced
URR Audio System 2026 GM sourced
URW Audio system, 17.7 inch diagonal advanced color LCD display with Google built-in compatibility 2026 GM sourced
US1 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, CD, AUTO TONE, CLOCK, RDS, AVECS, NAVIGATION, 20403 — GM sourced
US2 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, CLOCK, AUTO TONE,, RDS, AVECS, DVD, VEHICLE PC, NAVIGATION this code has more than one documented meaning — filter by year 1999 GM sourced
US3 P, ANT, M ANTENNA, DIVERSITY, 608 E, 1 — GM sourced
US4 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, CD, AUTO TONE, CLOCK, ETR, MP3, RDS, NAVIGATION SYSTEM, 20403 E, 1 — GM sourced
US6 P, ANT, M ANTENNA, FIXED, PAINTED, RADIO this code has more than one documented meaning — filter by year 1986 GM sourced
US7 P, ANT, M ANTENNA, POWER, PAINTED, RADIO this code has more than one documented meaning — filter by year 1986 GM sourced
US8 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, CD, AUTO TONE, CLOCK, ETR, MP3, RDS, 20403 this code has more than one documented meaning — filter by year — GM sourced
US9 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, RDS, MULTIPLE COMPACT DISC, AUTO TONE CONTROL, CLOCK, ETR, MP3, 10404 — GM sourced
USA Stars and Steel Special Edition 2026 GM sourced
USB P, LAMP, ROOF, OFF-ROAD SPOT, BLACK, 20207 — GM sourced
USC P, LAMP, ROOF, OFF-ROAD SPOT, BRIGHT, 20207 — GM sourced
USD Lamp Roof, Integral, Off-road Spot, Bright — Reference
USP C, FLP, R FLEET SALES, U.S. POSTAL SERVICE 1996 GM sourced
USR Receptacle USB — Reference
USS USB ports, dual 2022 Provisional
UT0 P, RDO, M RADIO, AM STEREO/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, HPS, CLOCK, ETR 1986 GM sourced
UT1 P, RDO, M RADIO, AM/FM STEREO, SEEK, CD, ETR, PHONE, AVECS, FADER 1997 GM sourced
UT2 P, RDO, M RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, ETR, MULTI CD this code has more than one documented meaning — filter by year 1999 GM sourced
UT3 P, RDO, M RADIO, AM/FM STEREO, SEEK SCAN, CD, ETR this code has more than one documented meaning — filter by year 1999 GM sourced
UT4 P, RDO, M RADIO, AM/FM STEREO, SEEK SCAN, MULTI CD, ETR this code has more than one documented meaning — filter by year 1999 GM sourced
UT5 P, RDO, M RADIO, AM, CLOCK, ETR this code has more than one documented meaning — filter by year 1984 GM sourced
UT6 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, EQUALIZER, CLOCK, ETR 1998 GM sourced
UT7 GROUND STUDS - Two interior mounted left and right side M10 studs 2020 GM sourced
UT8 P, RDO, M RADIO, PROVISIONS, AM/FM STEREO, PHONE 1998 Provisional
UT9 P, BAT, R BATTERY, 60 AH (USE TM7) 1995 Provisional
UTA Theft Deterent Sys Thatcham Electrical Content — Reference
UTB Theft Deterent Sys Thatcham Mechanical Content — Reference
UTC Theft Deterent Sys Thatcham Electrical & Mechanical Content — Reference
UTJ Theft-deterrent system 2026 GM sourced
UTK Theft Deterent Mechanical, Double Locking Latch — Reference
UTM Theft Deterent Sys Unauthorized Entry, W/o Remote Keyless Entry — Reference
UTP Alarm, Horn Content Theft Deterent — Reference
UTQ ALARM, HORN CONTENT THEFT DETERRENT, DISABLED 2026 GM sourced
UTR Theft-deterrent alarm system, content theft alarm 2026 GM sourced
UTS Horn Alarm — Reference
UTT Theft Protection Package, body security content 2019 Reference
UTU Sensor, vehicle inclination 2026 GM sourced
UTV Sensor, vehicle interior movement 2026 GM sourced
UTW Sensor, glass breakage 2026 GM sourced
UU0 P, RDO, M RADIO, AM STEREO/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, EQUALIZER, ETR 1997 GM sourced
UU1 P, RDO, M RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, SEARCH, ETR, FADER 1997 GM sourced
UU2 P, RDO, M RADIO, AM/FM STEREO, CASSETTE, ETR, DOLBY 1997 GM sourced
UU3 P, RDO, M RADIO, AM/FM STEREO, SEEK SCAN, CD, ETR, CD PROVISIONS, 1024 E, 5 — GM sourced
UU4 P, RDO, M RADIO, AM/FM STEREO, SEEK SCAN, CD, ETR, DISPLAY, CD PROVISIONS, 1024 E, 5 this code has more than one documented meaning — filter by year — GM sourced
UU5 P, RDO, M RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, CD, ETR 1998 GM sourced
UU6 P, RDO, M RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV CASS, CLOCK, GRAPHIC EQUALIZER, ETR this code has more than one documented meaning — filter by year 1994 GM sourced
UU7 P, RDO, M RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, SEARCH,, MULTI CD, ETR, FADER 1997 GM sourced
UU8 P, RDO, M RADIO, AM/FM STEREO, CD, NAVIGAION, RDS, MP3 DECODER, DVD, 20111 this code has more than one documented meaning — filter by year — GM sourced
UU9 P, RDO, M RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, CD, ETR,, HPS, FADER this code has more than one documented meaning — filter by year 1997 GM sourced
UUC Radio Am/fm Stereo, Seek/scan, Cd, Dvd, Auto Tone Clock,mp3,etr,rds — Reference
UUD Antenna Hex Fixed, 200 MM Mast, Am/fm Satellite & Gps — Reference
UUE P, HOR, R HORN, SINGLE DUAL TRUMPET AIR this code has more than one documented meaning — filter by year 1986 GM sourced
UUF Antenna Quad Fixed, 200 MM Mast, Am/fm & Gps — Reference
UUH Antenna Side Qtr Glass, Radio, Dmb — Reference
UUI Radio Am/fm Stereo, Seek/scan, Cd, Auto Tone, Clock Etr, Mp3, Rds, USB Port — Reference
UUJ Radio Am/fm Stereo, Seek/scan, Auto Tone, Cd, Cd-r MP3 Dvd, Clock, Etr, Rds, USB Port — Reference
UUK Radio Am/fm Stereo, Seek/scan, Auto Tone, Cd, Cd-r MP3 Dvd, Nav, Clock, Etr, Rds, USB Port — Reference
UUL Radio Am/fm Stereo, Seek/scan, Dvd, Cd, Clock Etr, Navigation, Voice — Reference
UUM Radio Am/fm Stereo, Wx, Seek/scan, Cd, Dvd, Nav, Clock Dsp, Rd, W/voi — Reference
UUN Radio Am/fm Stereo, Seek/scan, Rds, Multiple Compact Disc, Auto Tone — 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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