← 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 501–600 of 777 codes beginning with R. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| RNJ | C, WHF, M WHEEL FRT, 19.5 X 7.5, 10 HOLE, 285.75MM BC FN, 6.40 OFFSET (ACCURIDE 29195) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RNK | C, WHF, M WHEEL FRT, 22.5 X 8.25, 10 HOLE, 285.75MM BC DCT, PILOTED HUB (BUDD R93590) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RNL | C, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 285.75MM BC DCT, PILOTED HUB (BUDD R93590) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RNM | C, WHR, M WHEEL RR, 19.5 X 7.5, 10 HOLE, 285.75MM BC FN, 6.40 OFFSET (ACCURIDE 29195) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RNN | P, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 285.75MM BC PILOTED HUB, ALUMINUM (AKW RA29555) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| RNP | P, WHF, M WHEEL FRT, 24.5 X 8.25, 10 HOLE, 285.7MM BC, PILOTED HUB, (ACCURIDE 28641) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| RNQ | Wheel, full-size spare this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RNS | P, WHF, M WHEEL FRT, 24.5 X 8.25, 10 HOLE, 285.75MM BC, PILOTED HUB, ALUMINUM (AKW 29362) | 1998 | GM sourced |
| RO3 | Wheel 19 X 8.5, J, FRT & 19 X 9.0, J, Rr, Aluminum, Design 3 | — | Reference |
| ROS | P, PLT, R PLANT CODE, ROSARIO, ARGENTINA | 1997 | Provisional |
| RP1 | Wheel 16 X 6.5 Chrome Clad, Flanged, 23mm Offset | — | Reference |
| RP2 | Tire All P245/40r19-94w BW R/st TL Al3 | — | Reference |
| RP7 | Tire All P235/50r19-99h BW TL Al3 | — | Reference |
| RP8 | Tire All 235/50r19-99h BW TL Hw4 | — | Reference |
| RP9 | Tire All 165/65r14 SL 79t BW Hwy | — | Reference |
| RPF | C, WHF, M WHEEL FRT, 22.5 X 8.25, 10 HOLE, 11.25 BC BS DCT this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| RPG | C, EQUIPMENT, WHEEL & DRUM, 6 SPOKE, 20 IN CAST this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPH | P, EQUIPMENT, WHEEL BALANCE, WEIGHTED, STEEL TYPE, 21002 | — | Provisional |
| RPJ | Tire All P195/60r15 SL 87s BW Als | — | Reference |
| RPK | C, WHF, M WHEEL FRT, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPL | C, WHR, M WHEEL RR, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPM | P, WHF, M WHEEL FRT, 19.5 X 6.75, 8 HOLE, 275 MM BC FN, 5.55, OFFSET, ALCOA ALUM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPN | C, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 11.25 BC BS DCT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPP | WHEELS - 17 inch x 8 inch Black painted steel | 2026 | GM sourced |
| RPQ | P, WHF, M WHEEL FRT, 22.5 X 8.25, 10 HOLE, 285.75MM BC PILOTED HUB, (ACCURIDE 28487) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPR | P, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 285.75MM BC DCT PILOTED HUB (ACCURIDE 28487) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPS | Wheels, 20 inch x 9 inch High gloss Black painted aluminum with Red stripes this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RPT | Wheels, 22 inch x 9 inch painted aluminum with Chrome inserts this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RPU | P, WHF, M WHEEL FRT, 22.5 X 8.25, 10 HOLE, 11.25 BC DCT ALM (ACCURIDE) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPV | P, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 11.25 BC DCT ALM (ACCURIDE) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RPW | P, WHR, M WHEEL RR, 19.5 X 6.75, 8 HOLE, 275 MM BC FN, 5.55, OFFSET, ALCOA ALUM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RQ1 | Wheel 18 X 8.5, J, FRT & 19 X 10.0, Rr, J, Aluminum, Des Ign 1 | — | Reference |
| RQ2 | P, VEA, M VEHICLE APPLICATION, TRUCK SERVICE this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| RQ3 | P, VEA, M VEHICLE APPLICATION, TRUCK-TRACTOR SERVICE this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| RQ4 | Tire All 195/65r15 SL 91h BW Hw2 (low Resistance) (do | — | Reference |
| RQ5 | P, PYL, M PAYLOAD, REDUCED | 1983 | GM sourced |
| RQ6 | P, PYL, M PAYLOAD, INCREASED, 404 | — | Provisional |
| RQ7 | Tire All P215/55 R17 SL 93s BW Als | — | Reference |
| RQ9 | Wheel 20 X 8.5, J, Aluminum, Design 1 | — | Reference |
| RQA | Wheel 20 X 8.5, J, Aluminum, Design 2 | — | Reference |
| RQH | Wheel 18 X 7.5, J, Aluminium, Design 2 | — | Reference |
| RQJ | Wheel 18 X 7.5, J, Aluminum, Design 6 | — | Reference |
| RQK | Wheel 18 X 7.5, J, Aluminium, Design 3 | — | Reference |
| RQL | Wheels, 18 inch x 8.5 inch Gloss Black | 2026 | GM sourced |
| RQM | Wheel 21 X 8.5, J, Aluminium, Design 1 | — | Reference |
| RQN | Wheel 19 X 8, J, Aluminum, Design 2 | — | Reference |
| RQU | Wheel 13 X 5.0, J, Steel, Design 1 | — | Reference |
| RQW | Wheel 13 X 5.5, J, Steel, Design 1 | — | Reference |
| RQX | Wheel 14 X 4.5, J, Aluminum, Design 1 | — | Reference |
| RQY | Wheel 14 X 4.5, J, Steel, Design 1 | — | Reference |
| RR1 | Wheel 14 X 4.5, J, Aluminum, Design 2 | — | Reference |
| RR2 | Wheel 15 X 5.0, J, Aluminum, Design 4 | — | Reference |
| RR5 | Wheel 14 X 5.5, J, Aluminum, Design 2 | — | Reference |
| RR7 | Wheel 15 X 5.0, J, Aluminum, Design 6 | — | Reference |
| RR8 | Wheel Spare 13 X 5.5, J, Steel, Design 1 | — | Reference |
| RR9 | Accessory Engine Oil Cooler | — | Reference |
| RRA | Wheel 14 X 5.0, J, Steel, Design 1 | — | Reference |
| RRB | Wheel 14 X 5.5, J, Steel, Design 1 | — | Reference |
| RRC | Family Code, Component RR | 1988 | GM dated |
| RRD | Wheel 14 X 5.5, J, Aluminum, Design 1 | — | Reference |
| RRF | Wheel 15 X 5.0, J, Aluminum, Design 1 | — | Reference |
| RRG | Wheel 15 X 5.5, J, Aluminum, Design 1 | — | Reference |
| RRH | Family Code, Component RR RH | 1988 | GM dated |
| RRI | Wheel 15 X 5.5, J, Aluminum, Design 2 | — | Reference |
| RRJ | Wheel 15 X 5.5, J, Steel, Design 1 | — | Reference |
| RRK | Wheel 15 X 6.0, J, Aluminum, Design 1 | — | Reference |
| RRL | P, WHF, M WHEEL FRT, 22.5 X 6.75, 6 HOLE, 8.75 BC BS DCT (FI-27784) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RRM | P, WHR, M WHEEL RR, 22.5 X 6.75, 6 HOLE, 8.75 BC BS DCT (FI-27784) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RRO | Wheel 15 X 5.0, J, Aluminum, Design 2 | — | Reference |
| RRQ | Wheel 15 X 5.5, J, Aluminum, Design 3 | — | Reference |
| RRS | P, WHF, M WHEEL FRT, 22.5 X 8.25, 10 HOLE, 11.25 BC BS DCT (FI-27404) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RRT | P, WHR, M WHEEL RR, 22.5 X 8.25, 10 HOLE, 11.25 BC BS DCT (FI-27404) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RRU | P, WHR, M WHEEL RR, 24.5 X 8.25, 10 HOLE, 11.25 BC BS DCT (BUDD 87650) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RRV | Wheel 16 X 6.0, J, Aluminum, Design 1 | — | Reference |
| RRW | Wheel 18 X 8.5, J, FRT & 19 X 10.0, J, Rr, Chrome, Design 1 | — | Reference |
| RRY | Wheel 16 X 6.5, J, Steel, Design 1 | — | Reference |
| RRZ | Wheel 16 X 6.5, J, Aluminum, Design 1 | — | Reference |
| RS1 | Wheel 16 X 7.0, J, Aluminum, Design 1 | — | Reference |
| RS2 | Wheel 16 X 7.0, J, Steel, Design 1 | — | Reference |
| RS7 | Wheel 17 X 6.5, J, Aluminum, Design 1 | — | Reference |
| RS8 | Wheel 17 X 6.5, J, Steel, Design 1 | — | Reference |
| RS9 | Wheel 17 X 7.0, J, Steel, Design 1 | — | Reference |
| RSA | P, RESTRAINT, FRT SEAT, 208, AUTO, PASSIVE | 1994 | GM sourced |
| RSB | Restraint FRT Seat, 208, Manual, Active this code has more than one documented meaning — filter by year | — | Reference |
| RSC | Wheel 17 X 7.5, J, Alloy, Design 1 | — | Reference |
| RSF | Wheel 17 X 7.5, J, Steel, Design 1 | — | Reference |
| RSG | P, WHF, M WHEEL FRT, 24.5 X 8.25, 10 HOLE, 11.25 BC BS DCT (BUDD 87650) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RSH | Wheel 17 X 8.5, J, Aluminum, Design 1 | — | Reference |
| RSI | Truck Bed Organizer, collapsible, (dealer-installed) (LPO dealer-installed accessory) | 2026 | GM sourced |
| RSJ | P, RACK, SKI, SINGLE PKG, 20513 | — | Provisional |
| RSK | Wheel 20 X 10.0, J, FRT & 20 X 11.0, J, Rr, Aluminum, Design 1 | — | Reference |
| RSL | Wheels, 20 inch x 9 inch machined and painted Talos Bronze Metallic | 2026 | GM sourced |
| RSO | Family Code, Restraint (opel) this code has more than one documented meaning — filter by year | 1997 | GM dated |
| RSP | Family Code, Spring RR | 1998 | GM dated |
| RSR | Rear Seat Reminder | 2026 | GM sourced |
| RSW | Wheel 20 X 9, Aluminum, Painted | — | Reference |
| RSX | Wheel 18 X 7.0, J, Aluminum, Design 1 | — | Reference |
| RSZ | Wheel 18 X 7.5, J, Aluminum, Design 1 | — | Reference |
| RT1 | Wheel 18 X 7.5, J, Aluminum, Design 5 | — | Reference |
| RT2 | Wheel 18 X 7.5, J, Steel, Design 1 | — | 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.