← 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 301–400 of 922 codes beginning with U. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| U9H | P, CKD OPTION, #86 AFRICA | 1998 | Provisional |
| U9J | P, CKD OPTION, #88 NIGERIA | 1999 | Provisional |
| U9K | P, CKD OPTION, #89 NIGERIA, 821 P, 7 7, A | — | Provisional |
| U9L | P, CKD OPTION, #90 VENEZUELA | 1996 | Provisional |
| U9M | P, CKD OPTION, #91 VENEZUELA | 1996 | Provisional |
| U9N | P, CKD OPTION, #92 CANEXPO CKD VE-21 | 1998 | Provisional |
| U9O | P, CKD OPTION, #93 COLOMBIA, 926 P, 7 7, A | — | Provisional |
| U9P | P, CKD OPTION, #94 COLOMBIA, 926 P, 7 7, A | — | Provisional |
| U9Q | P, CKD OPTION, #95 COLOMBIA, 926 P, 7 7, A | — | Provisional |
| U9R | P, CKD OPTION, #96 CANEXPO CKD VE-08 | 1998 | Provisional |
| U9S | P, CKD OPTION, #97 CANEXPO CKD VE-09 | 1998 | Provisional |
| U9T | P, CKD OPTION, #98 VENEZUELA | 1998 | Provisional |
| U9U | P, CKD OPTION, #99 COLOMBIA, 926 P, 7 7, A | — | Provisional |
| U9V | P, CKD OPTION, #100 VENEZUELA, 926 P, 7 7, A | — | Provisional |
| U9W | P, CKD OPTION, #101 VENEZUELA | 1999 | Provisional |
| U9X | P, CKD OPTION, #102 CANEXPO CKD VE-07 | 1998 | Provisional |
| U9Y | P, CKD OPTION, #103 AFRICA | 1998 | Provisional |
| U9Z | P, CKD OPTION, #104 AFRICA | 1998 | Provisional |
| UA1 | P, BAT, R, BATTERY, HIGH CAPACITY, WET this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| UA2 | P, TDS, R, THEFT DETERENT SYS, EXPORT SPECIFIC this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| UA3 | P, DISPLAY, LIQUID CRYSTAL this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| UA4 | P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, CD, AUTO TONE, CLOCK, ETRNAVIGATION SYSTEM, 20610 E, 1 | — | GM sourced |
| UA5 | P, TDS, R, THEFT DETERENT SYS, PASSIVE, KEYLESS ENTRY/SECURITY | 1993 | GM sourced |
| UA6 | P, TDS, R, THEFT DETERENT SYS this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| UA7 | P, ALARM, TAXI this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| UA8 | Theft Deterent Sys European Specific | — | Reference |
| UA9 | P, BATTERY MOUNTING, REINFORCED | 1983 | GM sourced |
| UAA | P, EQUIPMENT, CLUSTER PKG-TACH,TRIP,, ODOM,VOLTS,OIL,DIC, 307 | — | Provisional |
| UAB | P, WIRING PROVISIONS, TOWING WINCH, 407 | — | GM sourced |
| UAC | Display I/p, Board Info Display-bid | — | Reference |
| UAD | Speaker System 2, Front, Base | — | Reference |
| UAE | Speaker System 2, Front, Deluxe | — | Reference |
| UAF | P, DISPLAY, MULTIPLE INFO DISPLAY (MID), 20124 E, 5 | — | GM sourced |
| UAG | P, DISPLAY, GRAPHIC INFO DISPLAY (GID), VAR 1, 20124 E, 5 | — | GM sourced |
| UAH | P, DISPLAY, GRAPHIC INFO DISPLAY (GID), VAR 2, 20124 E, 5 | — | GM sourced |
| UAI | Equipment Speaker, Tweeter | — | Reference |
| UAJ | P, DISPLAY, COLOR INFO DISPLAY (CID), 20124 E, 5 | — | GM sourced |
| UAK | Radio Am/fm Stereo, Compact Disc | — | Reference |
| UAL | Radio Control Data System, Mode | — | Reference |
| UAN | Speaker System 2, Rear, Base | — | Reference |
| UAO | Radio Control, Signal Processor, Digital | — | Reference |
| UAP | Speaker System 2, Rear, Deluxe | — | Reference |
| UAQ | Indicator,fuel Type | — | Reference |
| UAR | Augmented Reality | 2026 | GM sourced |
| UAS | Display Monitor, Rr, Rem Cont | — | Reference |
| UAU | Display Language,korean | — | Reference |
| UAV | Avec System Am/fm Radio Icdx,navigation,dvd (note:2003 Model Only) this code has more than one documented meaning — filter by year | — | Reference |
| UAY | Radio Am/fm Stereo, Seek/scan, Cdc 6, Mp3, Equalizer Etr | — | Reference |
| UAZ | Radio Am/fm Stereo, Seek/scan, Cdc 6, Mp3, Equalizer Etr, Rds | — | Reference |
| UB0 | P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN. CD, AUTO TONE, DATA SYSTEM, CLOCK, ETR, 308 | — | GM sourced |
| UB1 | P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN. AUTO REV MUSIC SEARCH CASS, CD, AUTO TONE, DATA SYSTEM, CLOCK, ETR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| UB2 | P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, MULTIPLE CD, AUTO TONE, CLOCK, ETR this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| UB3 | P, CSR, M, CLUSTER, INST, OIL, COOL TEMP, VOLTS, TRIP ODOM, TACH this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| UB4 | P, LAMP, SIDE MARKER, BOXED FOR SHIPMENT this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| UB5 | P, TELEPHONE, MOBILE VOICE CONTROL UNIT, WITH HANDSET, 926 E, 0 | — | GM sourced |
| UB6 | P, CSR, M, CLUSTER, INST, OIL, VOLTS, TACH | 1984 | GM sourced |
| UB7 | P, CSR, M, CLUSTER, INST, OIL, COOL TEMP, VOLTS, TRIP ODOM, TACH, DR INFO CTR this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| UB8 | P, HOR, R, HORN, HIGH NOTE this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| UB9 | P, TELEPHONE, MOBILE VOICE CONTROL UNIT, W/O HANDSET, 926 E, 0 | — | Provisional |
| UBA | C, BATTERY MOUNTING, *OPTIONAL* TRAY this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| UBB | Radio Provisions, CD Changer | — | Reference |
| UBC | USB ports, 2, Charge/Data ports located inside center console | 2026 | GM sourced |
| UBD | USB ports | 2026 | GM sourced |
| UBG | Antenna Roof, Radio, Phone, Digital Audio System | — | Reference |
| UBH | Antenna Roof, Radio, Phone, Gps, Digital Audio System | — | Reference |
| UBI | USB ports, (2) charge-only, rear | 2026 | GM sourced |
| UBJ | USB Ports, 2, Charge/Data ports located on instrument panel | 2026 | GM sourced |
| UBK | Radio Am/fm Stereo, Seek/scan, Rds, Multiple Compact Disc, Auto Tone Conrtol, Clock, Etr | — | Reference |
| UBO | CLUSTER, INST, OIL, TEMP,TACH ,TURBO BOOST | — | Provisional |
| UBS | Digital Audio System S-band And Traffic | — | Reference |
| UBT | P, DAS, R, DIGITAL AUDIO SYSTEM, BROADCAST, TEXT, 10806 E, 0 | — | GM sourced |
| UBU | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CASSETTE, ETR, FADER, 20123 E, 8 | — | Provisional |
| UBV | Communication Equip Tpeg | — | Reference |
| UBW | Radio Am/fm Stereo, Seek/scan, Single Cd, Mp3, Etr, Hps I/p, Auto Tone | — | Reference |
| UBY | Cluster Inst, Speedo, Kilo | — | Reference |
| UBZ | Cluster Inst, Speedo, Miles | — | Reference |
| UC0 | P, SENSOR INDICATOR, INFLATABLE RESTRAINT, FRT LH/CHILD PRESENCE, DETECTOR | 1999 | GM sourced |
| UC1 | P, SPO, R, SPEEDOMETER, INST, MILES this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| UC2 | P, SPO, R, SPEEDOMETER, INST, KILO & MILES, KILO ODOMETER, POSITIVE BIAS this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| UC3 | P, COMPASS, ELECTRONIC this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| UC4 | P, SPO, R, SPEEDOMETER, INST, KILO & MILES, MILES ODOMETER, POSITIVE BIAS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| UC5 | Speaker System 6, Quad FRT DR Mtd, Dual Ext Rge RR DR Mtd | — | Reference |
| UC6 | P, RDO, M, RADIO, AM/FM STEREO, SEEK/SCAN, RDS, MULTIPLE COMPACT DISC, AUTO TONE CONTROL, CLOCK, ETR this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| UC7 | P, CSR, M, CLUSTER, INST, TEMP, TACH, SPEED, FUEL, DVR INFO CTR, 20920 E, 4 | — | Provisional |
| UC8 | P, SPR, M, SPEAKER SYSTEM, 11, PREMIUM, 1011 E, 3 | — | Provisional |
| UC9 | P, CSR, M, CLUSTER, INST, OIL, COOL TEMP, TRIP ODOM, TACH, SUPER CHARGER BOOST, 20923 E, 1 | — | GM sourced |
| UCB | USB ports | 2026 | GM sourced |
| UCD | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CD, ETR, PHONE,, NAVIGATION, FADER, DVD, VOICE CONTROL, MP3, 10712 E, 0 | — | Provisional |
| UCE | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CD, NAVI, ETR, FADER, 10712 E, 0 | — | Provisional |
| UCF | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CD, TELEMATIC, PHONE, ETR, FADER, MP3, VOICE CONTROL, GPS, 10816 E, 0 | — | Provisional |
| UCG | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CD, TELEMATIC, PHONE, ETR, FADER, MP3, VOICE CONTROL, 10712 E, 0 | — | Provisional |
| UCH | P, RDO, M, RADIO, AM/FM STEREO, SEEK, CD, ETR, FADER, MP3, 10712 E, 0 | — | GM sourced |
| UCJ | P, RDO, M, RADIO, AM/FM STEREO, SEEK, MCD, TELEMATIC, PHONE, ETR, FADER, MP3, VOICE CONTROL, GPS, 10816 E, 0 | — | Provisional |
| UCK | P, RDO, M, RADIO, AM/FM STEREO, SEEK, MCD, ETR, FADER, 10724 E, 0 | — | Provisional |
| UCN | Radio Am/fm Stereo, SD Nav, Dvd-rom, Caf, Usb, Rsa, Voice Rec (gmna VE | — | Reference |
| UCR | Navigation System Low Cost Variant | — | Reference |
| UCS | Navigation System Low Cost Variant, Dmb | — | Reference |
| UCT | Radio Am/fm Stereo, SD Nav, Dvd-rom, Caf, Usb, Rsa, (sgm Version) | — | Reference |
| UCU | Radio Am/fm Stereo, SD Nav, Cd-rom, Caf, Usb, Rsa, Tmc (gme Version) | — | Reference |
| UCV | Interior Camera | 2026 | 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.