GM RPO Code Database

← All owner tools  ·  Decode your own SPID label with the GM RPO decoder

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 101–200 of 922 codes beginning with U. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
U2Z Cluster Inst, Analog, Kilo — Reference
U30 P, CSR, M CLUSTER, INST, TACH, CLOCK 1998 GM sourced
U31 P, GAGE, AMMETER this code has more than one documented meaning — filter by year 1983 GM sourced
U32 P, ENP, R ENTERTAINMENT PKG, REAR SEAT, PLAYER, DVD, 1106 E, 1 — GM sourced
U33 P, LIGHTER, CIGARETTE - DELETE 1998 Provisional
U34 P, DISPLAY, CELSIUS TEMPERATURE this code has more than one documented meaning — filter by year 1997 GM sourced
U35 P, CLOCK, ELECTRIC this code has more than one documented meaning — filter by year 1984 GM sourced
U36 P, CLOCK, - DELETE 1998 GM sourced
U37 P, LIGHTER, CIGARETTE this code has more than one documented meaning — filter by year 1983 GM sourced
U38 P, INDICATOR, LOW COOLANT this code has more than one documented meaning — filter by year 1985 GM sourced
U39 P, CSR, M CLUSTER, INST, OIL, COOL TEMP, VOLTS, TRIP ODOM this code has more than one documented meaning — filter by year 1984 GM sourced
U3A P, DLA, R DISPLAY LANGUAGE, GERMAN 1995 Provisional
U3B P, DLA, R DISPLAY LANGUAGE, ITALIAN 1995 Provisional
U3C P, DLA, R DISPLAY LANGUAGE, DUTCH 1995 Provisional
U3D P, DLA, R, DISPLAY LANGUAGE, FRENCH 1995 Provisional
U3E P, DLA, R, DISPLAY LANGUAGE, SPANISH 1995 Provisional
U3F P, DLA, R, DISPLAY LANGUAGE, ENGLISH 1995 Provisional
U3G P, DLA, R, DISPLAY LANGUAGE, SWEDISH 1995 Provisional
U3H P, DLA, R, DISPLAY LANGUAGE, PORTUGUESE 1998 Provisional
U3I P, FIN, R, FLEET INCENTIVE, AMERICAN GENERAL FINANCE (B/H/W-TRK ST), 11004 — Provisional
U3J P, DLA, R, DISPLAY LANGUAGE, NORWEGIAN 1998 Provisional
U3K P, DLA, R, DISPLAY LANGUAGE, FINNISH 1998 Provisional
U3L P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, CD, AUTO TONE, CLOCK, ETR, MP3, 10105 E, 1 — GM sourced
U3M P, DLA, R, DISPLAY LANGUAGE, DANISH 1998 Provisional
U3N P, DLA, R, DISPLAY LANGUAGE, GREEK 1998 Provisional
U3P P, DLA, R, DISPLAY LANGUAGE, POLISH 1999 Provisional
U3Q P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, CD, DVD, NAV, CLOCK, DSP,W/VOICE REC MICRO, 1114 E, 4 — GM sourced
U3R P, RDO, M, RADIO, AM/FM STEREO, WX, SEEK/SCAN, CD, DVD, NAV, CLOCK, DSP, RDS, W/VOICE REC MICRO, 1114 E, 4 — GM sourced
U3S P, RDO, M, RADIO, AM/FM STEREO, LW, SEEK/SCAN, CD, DVD, NAV, CLOCK, DSP, RDS, W/VOICE REC MICRO, 1114 E, 4 — GM sourced
U3T P, DLA, R, DISPLAY LANGUAGE, TURKISH 1999 Provisional
U3U P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, DVD, CD, CLOCK,, ETR, NAVIGATION, VOICE REC, MP3, 10109 E, 1 — GM sourced
U3V P, RDO, M, RADIO, INTEGRATED MOBILE TELEPHONE, AEC 1999 Provisional
U3W P, RDO, M, RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, SEARCH, ETR, PHONE, FADER, AEC 1999 Provisional
U3X P, RDO, M, RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, SEARCH, MULTI CD, ETR, PHONE, FADER, AEC 1999 Provisional
U3Y P, RDO, M, RADIO, AM/FM STEREO, SEEK, AUTO REV CASS, SEARCH, MULTI CD, ETR, HPS, PHONE, FADER, AEC 1999 Provisional
U3Z P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, DVD, CD, CLOCK, ETR, NAVIGATION, VOICE REC, MP3, VICS, 10105 E, 1 — GM sourced
U40 P, DISPLAY, DIGITAL DIRECT READOUT, TRIP MONITOR this code has more than one documented meaning — filter by year 1983 GM sourced
U41 P, INDICATOR, LOW FUEL this code has more than one documented meaning — filter by year 1983 GM sourced
U42 Entertainment system, rear seat, Blu-Ray/DVD with remote control 2019 Reference
U43 P, RDO, M, RADIO, AM STEREO/FM STEREO, DSP, WX, HPS, RDS, PDA PORT, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, CLOCK 1999 Provisional
U44 P, RDO, M, RADIO, AM STEREO/FM STEREO, DSP, WX, RDS, PDA PORT, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, CLOCK 1999 Provisional
U45 P, RDO, M, RADIO, AM STEREO/FM STEREO, WX, RDS, CD, CDROM,, NAVIGATION, CLOCK 1999 GM sourced
U46 P, INDICATOR, EXTERNAL LAMP this code has more than one documented meaning — filter by year 1998 GM sourced
U47 P, LAMP, INTR, ENG COMPT, COURTESY, EXTENDABLE 1985 GM sourced
U48 P, DISPLAY, VIDEO SYSTEM this code has more than one documented meaning — filter by year 1999 GM sourced
U49 P, INDICATOR, DISTANCE CONT 1984 GM sourced
U4B Identification #1 Bar Form Change — Reference
U4C P, MODIFICATION, JAN. 2000 SIDE IMPACT REQT'S, 507 E, 8, 8, A — Provisional
U4D Digital Audio System Broadcast, Multimedia — Reference
U4F P, PARTS, FLOOR REVISIONS, 20611 E, 8, 8, A — Provisional
U4G P, TPK, R, TRAILER PROVISIONS, HEAVY DUTY 1998 GM sourced
U4H Radio Am/fm Stereo, Wx, Seek/scan, Cd, Dvd, Nav, Clock Dsp, Rds, Usb, Rse, W/voice Rec Micro — Reference
U4I P, PARTS, B PILLAR INTERIM SIDE INTRUSION PROTECTION(WH 2) NEW FRONT SEATBELT RETRACTORS (KC2.1) - (VX2/WH2), 10607 E, 8, 8, A — GM sourced
U4J P, KIT, AFTER MARKET HBD POWER ANTENNA, 1205 E, 8, 8, A — Provisional
U4K P, KIT, AFTER MARKET HBD CRUISE CONTROL(AUTO ONLY), 1205 E, 8, 8, A — Provisional
U4L P, KIT, AFTER MARKET HBD SPOILER TYPE 1, 1206 E, 8, 8, A — Provisional
U4M P, KIT, AFTER MARKET HBD SPOILER TYPE 2, 1206 E, 8, 8, A — Provisional
U4N P, KIT, AFTER MARKET HBD SPOILER TYPE 3, 1206 E, 8, 8, A — Provisional
U4P Speedometer Inst, Miles & Kilo, Miles Odometer, Rhd — Reference
U4S P, KIT, AFTER MARKET HBD SPORTS GRILLE(UTE), 1206 E, 8, 8, A — Provisional
U4T P, PARTS PKG, SERIES 1 COUPE AT VY SOP, 20220 E, 8, 8, A — Provisional
U4W P, PARTS PKG, 'NCAP' CHANGES AT 'VY', 11106 E, 8, 8, A — Provisional
U4X P, KIT, AFTER MARKET HBD AUDIBLE ALARM, 1205 E, 8, 8, A — Provisional
U50 P, CSR, M, CLUSTER, INST, OIL, COOL TEMP, VOLTS, TRIP ODOM, TACH, DR INFO CTR, COMPASS 1998 GM sourced
U51 P, DISPLAY, FUEL ECONOMY, TSD INFO, SERVICE REMINDER this code has more than one documented meaning — filter by year 1986 GM sourced
U52 P, CSR, M, CLUSTER, INST, ELECTRONIC this code has more than one documented meaning — filter by year 1984 GM sourced
U53 P, DISPLAY, FUEL ECONOMY, GALLONS, MPH, MPG 1998 Provisional
U54 P, DISPLAY, FUEL ECONOMY, LITER, KM/H, KM/LITER 1998 Provisional
U55 P, DISPLAY, FUEL ECONOMY, LITER, KM/H, L/100KM 1998 Provisional
U56 P, ENP, R, ENTERTAINMENT PKG, REAR SEAT, PLAYER, DVD, OVERHEAD UNIT, 10122 E, 0 — GM sourced
U57 P, SPR, M, SPEAKER SYSTEM, 8, DUAL F/D PILLAR, DUAL FRT DR MTD, DUAL RR DR MTD, SUBWOOF PKG SHELF, I/P CTR, AMPLIF, BOSE 1997 GM sourced
U58 P, RDO, M, RADIO, AM/FM STEREO, MTR this code has more than one documented meaning — filter by year 1984 GM sourced
U59 P, SPR, M, SPEAKER SYSTEM, 8, QUAD FRT DR MTD, QUAD SAIL PNL, AMPLIFIER 1997 GM sourced
U5G 5G Wi-Fi Hotspot capable 2026 GM sourced
U5I P, TPK, R, TRAILER PROVISIONS, LIGHT DUTY 1998 Provisional
U5J Calibration Telematics, Holden Assist/onstar — Reference
U5V P, FLOOR, EURO 2 FLOOR REVISIONS, 601 E, 8, 8, A — Provisional
U5X P, PARTS PKG, TONNEAU COVER FOR SPORTS BAR, 10814 E, 8, 8, A — Provisional
U5Y P, PARTS PKG, EURO 2 EMISSIONS CHANGE, 10828 E, 8, 8, A — Provisional
U60 P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV CASS, MULTI CD PROVISION, HPS, LED INDICATOR, REMOVABLE PNL, ETR 1998 Provisional
U61 P, SPR, M, SPEAKER SYSTEM, 10, DELUXE 1998 GM sourced
U62 P, SPR, M, SPEAKER SYSTEM, 4, DUAL COAX FRT, DUAL COAX PKG SHELF 1985 GM sourced
U63 P, SPR, M, SPEAKER SYSTEM, 9, PREMIUM this code has more than one documented meaning — filter by year 1998 GM sourced
U64 P, SPR, M, SPEAKER SYSTEM, 4, DUAL FRT DASH MTD, DUAL STD RGE PKG SHELF/QTR this code has more than one documented meaning — filter by year 1983 GM sourced
U65 P, SPR, M, SPEAKER SYSTEM, 7, PREMIUM this code has more than one documented meaning — filter by year 1999 GM sourced
U66 P, SPR, M, SPEAKER SYSTEM, 7, CUSTOM this code has more than one documented meaning — filter by year 1999 GM sourced
U67 P, SPR, M, SPEAKER SYSTEM, 7, QUAD FRT DR MTD, DUAL RR DR MTD, SUBWOOF PKG SHELF, AMPLIFIER, BOSE this code has more than one documented meaning — filter by year 1998 GM sourced
U68 P, DISPLAY, DRIVER INFO CENTER this code has more than one documented meaning — filter by year 1984 GM sourced
U69 P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, CD PLAYER, MULTI CD PROVISION, HPS, LED INDICATOR, REMOVABLE PNL, ETR, 331 E, 5 — GM sourced
U6A P, CKD OPTION, #1 CHINA 1997 Provisional
U6B P, CKD OPTION, #2 VENEZUELA 1998 Provisional
U6C P, CKD OPTION, #3 CANEXPO CKD VE-01 1996 Provisional
U6D P, CKD OPTION, #4 VENEZUELA 1998 Provisional
U6E P, CKD OPTION, #5 AFRICA TOGO 1998 Provisional
U6F P, CKD OPTION, #6 CHINA 1996 Provisional
U6G P, CKD OPTION, #7 VENEZUELA 1998 Provisional
U6H P, CKD OPTION, #8 VENEZUELA 1999 Provisional
U6I P, CKD OPTION, #9 VENEZUELA, 20715 P, 7, 7, A — Provisional
U6J P, CKD OPTION, #10 CANEXPO CKD VE-15 1998 Provisional
U6K P, CKD OPTION, #11 VENEZUELA, 211 P, 7, 7, A — 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.

Scroll to Top