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| 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 401–500 of 588 codes beginning with P. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| PNH | Interior Trim Panels-all (gmdat) N | — | Reference |
| PNI | Panel Convenience, RR Compt, Display | — | Reference |
| PNK | P, EQUIPMENT, TAP-IN SYSTEM (NO FUEL STORAGE) | 1999 | GM sourced |
| PNL | P, CCL, R, SECONDARY COLOR, EXTERIOR, YELLOW, PENSKE | 1992 | GM sourced |
| PNM | P, EQUIPMENT, TEMPORARY PROPANE TANK this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| PNN | C, VEHICLE, PENSKE this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| PNO | Family Code, Panel (opel) this code has more than one documented meaning — filter by year | 1997 | GM dated |
| PNP | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 2 DEGREE this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| PNQ | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 3 DEGREE this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| PNR | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 4 DEGREE this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| PNS | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 5 DEGREE this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| PNU | P, CCU, M, PRIMARY COLOR, EXTERIOR, YELLOW, PENSKE this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| PNV | P, WCR, R, CARRIER, OUTSIDE SPARE TIRE MOUNT NOT DESIRED (RETAIN INSIDE TIRE MOUNTING) this code has more than one documented meaning — filter by year | 1987 | GM sourced |
| PNX | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 6 DEGREE this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| PNY | P, AGL, R, ANGLE, RR AXLE PINION, NOMINAL 7 DEGREE this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| PNZ | Angle RR Axle Pinion, Nominal 8 Degree | — | Reference |
| POC | Sales Package Police Conversion (base) | — | Reference |
| POD | Sales Package Police Conversion (uplevel) | — | Reference |
| POE | FAMILY CODE, PORT OF ENTRY, 403 | — | Provisional |
| POM | Plant Code-pomigliano,italy | — | Reference |
| POR | P, PLT, R, PLANT CODE, AZAMBUJA, PORTUGAL | 1997 | GM sourced |
| PP1 | Wheel 16 X 6.5 Aluminum, 41mm Offset | — | Reference |
| PP2 | Wheel 16 X 6.5 Aluminum, 23mm Offset | — | Reference |
| PP3 | Wheel 16 X 6 Steel, 41mm Offset | — | Reference |
| PP4 | Wheel 16 X 6 Steel, 23mm Offset | — | Reference |
| PPA | Equipment Assist, Open & Close, Tailgate | — | Reference |
| PPB | P, EQUIPMENT, PUBX EXTENDER, 20426 | — | GM sourced |
| PPC | Panel Trim, RR Doors | — | Reference |
| PPE | Wheel 20 X 7.5 Aluminum, Chrome, Tech | — | Reference |
| PPL | P, EQUIPMENT, POWER ASSIST, OPEN & CLOSE, LIFT GATE, 407 | — | Provisional |
| PPS | Family Code, Paint Scheme | 1989 | GM dated |
| PPV | Vehicle Police, Pursuit | — | Reference |
| PPW | Wireless phone projection | 2026 | GM sourced |
| PPZ | P, CCC, R, COLOR COMBINATION, EXTERIOR, PAINT SCHEME-Z this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| PQ3 | Wheel,13 X 4.5j Alloy | — | Reference |
| PQ7 | 8.25 X 14 WHITE STRIPE TIRE | — | Provisional |
| PQA | safety and driver-assistance package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| PQB | Safety Package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| PQC | P, WRG, R, WHEEL RR GENERIC, ALUMINUM, 10 HOLE, 11.25 BC BS, DISC this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQD | P, WRG, R, WHEEL RR GENERIC, STL 10 HOLE, 11.25 BC BS, DISC, RR this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| PQE | Wheel,front,generic 6 Hole 8.75 BC BS Disc | — | Reference |
| PQF | Wheel,rear Generic 6 Hole,8.75 BC BS Disc | — | Reference |
| PQG | ONSTAR CONNECT PLUS - 36 MONTHS OF SERVICE | 2026 | GM sourced |
| PQH | ONSTAR CONNECT PLUS - 48 MONTHS OF SERVICE | 2026 | GM sourced |
| PQI | ONSTAR CONNECT PLUS - 60 MONTHS OF SERVICE | 2026 | GM sourced |
| PQJ | P, WFG, R, WHEEL FRT GENERIC, 20 IN & 22.5 IN, CAST this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQK | P, WRG, R, WHEEL RR GENERIC, 20 IN & 22.5 IN, CAST this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQN | P, TNK, M, FUEL TANK, NATURAL GAS, 3,600 PSI, 20 EQUIVALENT GALLON, GASOLINE CAPACITY | 1998 | GM sourced |
| PQR | P, WFG, R, WHEEL FRT GENERIC, DISC, 8 HOLE, 275 MM BC FN this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| PQS | P, WRG, R, WHEEL RR GENERIC, DISC, 8 HOLE, 275 MM BC FN this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| PQU | P, WFG, R, WHEEL FRT GENERIC, STL, 10 HOLE, 285.75 MM BC, DISC, PILOTED,, (20 OR 22.5 INCH WHEELS) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQV | P, WRG, R, WHEEL RR GENERIC, STL, 10 HOLE, 285.75 MM BC, DISC, PILOTED,, (20 OR 22.5 INCH WHEELS) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQW | P, WFG, R, WHEEL FRT GENERIC, STL, 10 HOLE, 285.75 MM BC, DISC, PILOTED,, (19.5 INCH WHEELS) | 1994 | GM sourced |
| PQX | P, WRG, R, WHEEL RR GENERIC, STL, 10 HOLE, 285.75 MM BC, DISC, PILOTED,, (19.5 INCH WHEELS) | 1994 | GM sourced |
| PQY | P, WFG, R, WHEEL FRT GENERIC, 10 HOLE, 287.75 MM BC, ALUM, HUB PILOTED this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PQZ | P, WRG, R, WHEEL RR GENERIC, 10 HOLE, 287.75 MM BC, ALUM, HUB PILOTED this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PR0 | APPEARANCE PACKAGE SIERRA PROFESSIONAL | — | Provisional |
| PR3 | 8.25 X 14 8 PLY WHITE STRIPE TIRE | — | Provisional |
| PR7 | Removes 3 Years SiriusXM for suitably equipped or eligible vehicles | 2026 | GM sourced |
| PRA | P, SALES PROCESSING OPT, POSTAL SERVICE, COMPANION SEAT this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| PRB | 3 Years OnStar One | 2026 | GM sourced |
| PRO | P, APP, R, APPEARANCE PACKAGE, SIERRA PROFESSIONAL, 1128 | — | GM sourced |
| PRP | P, SALES PACKAGE, COMMERCIAL TRADESMAN, 10809 | — | GM sourced |
| PRS | P, IDENTIFICATION, PRO-SPEC | 1990 | GM sourced |
| PSG | P, PROCESSING, UNSUPPORTED SEO OPTION | 1994 | GM sourced |
| PSN | Family Code, Attachment | 1988 | GM dated |
| PSR | Reservoir Power Steering Fluid, With Level Sight | — | Reference |
| PST | P, CCK, R, COLOR, VAR 1, TWO TONE, SCHEME Z this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| PSU | P, CCK, R, COLOR, VAR 2, THREE TONE, SCHEME Z this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| PTA | P, PROVISIONS, LOW PROFILE FRT TIRES this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PTB | Wheel 17 X 7.5 Aluminum, Polished | — | Reference |
| PTD | Control Pto Switch Delete | — | Reference |
| PTI | SALES PACKAGE, LUGGAGE CARRIER/RR WINWW DEFLECTOR | — | Provisional |
| PTJ | Equipment Remote Key, Two | — | Reference |
| PTO | Power Take-Off | 2026 | GM sourced |
| PTS | FAMILY CODE, PT DRESS SUBASSEMBLY, 10917 | — | Provisional |
| PTT | Trailer Tire Pressure Monitor Sensors | 2026 | GM sourced |
| PTW | Wheels, 18 inch High Gloss Black aluminum | 2026 | GM sourced |
| PTX | P, ECP, M, ENGINE CONTROL, POWER TAKE-OFF (PTO), CONTROLS, NOT INSTALLED, 20604 | — | GM sourced |
| PU8 | G78 X 15 WHITE STRIPE TIRE | — | Provisional |
| PUB | P, CAP, PUBX BED RAIL, 20221 | — | Provisional |
| PUR | C, FLP, R, FLEET SALES, PUROLATOR | 1997 | GM sourced |
| PVA | P, PAINT PROCESS, WHEELS, PRE-PAINTED, WHITE this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| PVB | P, TNK, M, FUEL TANK, 227L, 60 GAL, RH, RECT, 25 X 15, INT STEP this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PVC | P, FUEL TANK FILLER, NECK, BASKET, ANTI-SYPHON this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| PVD | C, PRICING, MIRROR O/S | 1994 | GM sourced |
| PVE | C, TNK, M, FUEL TANK, 227L, 60 GAL, LH, RECT, 25 X 15, INT STEP this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PVF | P, PRICING, MIRROR ASSEMBLY | 1994 | GM sourced |
| PVG | P, WFG, R, WHEEL FRT GENERIC, 8 HOLE, 275 MM BC FN, ALUMINUM/THICK DISC this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PVH | P, WRG, R, WHEEL RR GENERIC, 8 HOLE, 275 MM BC FN, ALUMINUM/THICK DISC this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PVJ | Fuel Tank Filler Neck, Elongated | — | Reference |
| PVK | C, PRICING, SPECIAL PAINT-SGL UNIT | 1992 | GM sourced |
| PVL | P, FUEL TANK FILLER, NECK, ADJUSTABLE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| PVM | P, TNK, M, FUEL TANK, NATURAL GAS, 3,600 PSI, 30 EQUIVALENT GALLON, GASOLINE CAPACITY | 1998 | GM sourced |
| PVN | C, PAINT PROCESS, WHEELS, PRE-PAINTED, GOLD | 1996 | GM sourced |
| PVP | P, PAINT PROCESS, WHEELS, PRE-PAINTED, WHITE POWDER COAT this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| PW0 | P, WHL, M, WHEEL, 14 X 5.5, STEEL, 14 ROUND HOLES | 1997 | Provisional |
| PW1 | P, WHL, M, WHEEL, 15 X 7, ALUMINUM, DIAMOND FINISH this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| PW2 | Wheel 18 X 8, Aluminum, Machined Face | — | Reference |
| PW3 | P, WHL, M, WHEEL, 13 X 4.5, 5 TRIANGULAR HOLES | 1984 | 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.