GM RPO Code Decoder

← All owner tools · Browse the full GM RPO code database

By FullSizeChevy.com Updated 5 September 2026

Verified code reference

1028 codes with at least one confirmed factory-document citation.

Tier 1 verified RPO codes and their systems
Code	System	Notes
`01U`	Paint	Meaning changes by year and platform
`02N`	other
`57N`	Wheels and tires
`57R`	Wheels and tires
`5FD`	Wheels and tires
`5FE`	Wheels and tires
`5FF`	Wheels and tires
`5FG`	Wheels and tires
`5H1`	Interior trim	Meaning changes by year and platform
`5HP`	Other
`5J1`	Electrical	Meaning changes by year and platform
`5J3`	Electrical
`5J9`	Electrical	Meaning changes by year and platform
`5JL`	Brake system
`5JY`	Exterior package
`5K4`	Exterior package	Meaning changes by year and platform
`5K9`	Wheels and tires
`5L5`	Fleet, police and special-servic	Meaning changes by year and platform
`5LE`	other
`5LL`	Exterior package
`5LO`	Electrical
`5RU`	Exterior package
`5T4`	Paint
`5T5`	Seats
`5VF`	Engine
`5VI`	Interior trim
`5W4`	Fleet, police and special-servic
`5WI`	Interior trim
`5Y1`	Seats
`5Z4`	Wheels and tires	Meaning changes by year and platform
`63B`	Exterior package
`63G`	Exterior package
`65C`	Other
`6C7`	Seats	Meaning changes by year and platform
`6E2`	Fleet, police and special-servic
`6E8`	Fleet, police and special-servic
`6J3`	Fleet, police and special-servic
`6J4`	Fleet, police and special-servic
`6J7`	Electrical
`6J8`	Electrical
`6J9`	Electrical
`6JE`	Electrical
`6JG`	Electrical
`6M9`	Wheels and tires
`6N5`	Fleet, police and special-servic
`6N6`	Fleet, police and special-servic
`6SL`	Exterior package	Meaning changes by year and platform
`7X2`	Electrical
`7X3`	Electrical
`7X6`	Electrical
`7X7`	Electrical
`8F2`	Exterior package	Meaning changes by year and platform
`8S3`	Electrical	Meaning changes by year and platform
`9B9`	Interior trim	Meaning changes by year and platform
`9C1`	Fleet, police and special-servic
`9C2`	Interior trim	Meaning changes by year and platform
`9D7`	Other	Meaning changes by year and platform
`9G8`	Lighting
`9J4`	Exterior package	Meaning changes by year and platform
`9L7`	Electrical	Meaning changes by year and platform
`9M4`	Exterior package	Meaning changes by year and platform
`9N2`	GVWR or chassis package
`9R1`	Exterior package	Meaning changes by year and platform
`9U3`	Seats
`9V2`	Paint
`9V5`	Paint	Meaning changes by year and platform
`9V7`	Paint
`9W3`	Paint	Meaning changes by year and platform
`9W4`	Paint	Meaning changes by year and platform
`9W5`	Paint
`A2S`	Seats
`A2X`	Seats
`A45`	Convenience equipment
`A48`	Body configuration
`A50`	Seats
`A60`	Exterior package
`A68`	Seats
`A7E`	Seats
`A7J`	Seats
`A7K`	Seats
`A95`	Seats	Meaning changes by year and platform
`AAK`	Interior trim
`AAO`	Interior trim
`ABV`	Trim level	Meaning changes by year and platform
`ACS`	Seats
`AE7`	Seats	Meaning changes by year and platform
`AED`	Exterior package
`AEF`	Exterior package
`AEQ`	Exterior package
`AF6`	Seats
`AF7`	Other	Meaning changes by year and platform
`AHE`	Seats
`AHH`	Seats
`AHX`	Seats
`AII`	Convenience equipment
`AJV`	Seats
`AK0`	Body configuration
`AKE`	Seats
`AKJ`	Exterior package
`AKK`	Exterior package
`AKO`	Exterior package
`AKP`	Exterior package
`AKX`	Exterior package
`AL0`	Convenience equipment
`AL4`	Seats	Meaning changes by year and platform
`AL9`	Seats
`AMF`	Interior trim
`ANQ`	Trailering and towing	Meaning changes by year and platform
`APD`	Other	Meaning changes by year and platform
`AQQ`	Interior trim	Meaning changes by year and platform
`ARN`	Seats	Meaning changes by year and platform
`AS8`	Seats	Meaning changes by year and platform
`ASD`	Convenience equipment	Meaning changes by year and platform
`AT6`	Seats	Meaning changes by year and platform
`AT9`	Seats
`ATD`	Seats	Meaning changes by year and platform
`ATH`	Interior trim
`ATN`	Seats
`ATT`	Seats	Meaning changes by year and platform
`ATZ`	Seats	Meaning changes by year and platform
`AU3`	Interior trim	Meaning changes by year and platform
`AU7`	Electrical	Meaning changes by year and platform
`AUN`	Convenience equipment
`AVI`	Convenience equipment
`AVJ`	Interior trim
`AVK`	Seats
`AVU`	Seats
`AXG`	Exterior package
`AY0`	Convenience equipment
`AYH`	Convenience equipment
`AYQ`	Convenience equipment
`AZ3`	Seats	Meaning changes by year and platform
`B1J`	Wheels and tires
`B1V`	Exterior package
`B30`	Interior trim
`B32`	Interior trim	Meaning changes by year and platform
`B33`	Interior trim	Meaning changes by year and platform
`B34`	Interior trim	Meaning changes by year and platform
`B35`	Interior trim	Meaning changes by year and platform
`B3L`	Exterior package
`B4U`	Exterior package
`B58`	Interior trim	Meaning changes by year and platform
`B59`	Trim level
`B7G`	Interior trim
`B84`	Exterior package
`B85`	Exterior package
`B86`	Exterior package
`B88`	Exterior package	Meaning changes by year and platform
`BAQ`	Engine	Meaning changes by year and platform
`BCN`	Electrical
`BCV`	Interior trim
`BG9`	Interior trim
`BHP`	Exterior package
`BKE`	Interior trim
`BKF`	Interior trim
`BMK`	Exterior package
`BRS`	Exterior package
`BTM`	Interior trim
`BTV`	Interior trim
`BVE`	Paint	Meaning changes by year and platform
`BVQ`	Exterior package
`BVT`	Wheels and tires
`BW2`	Exterior package	Meaning changes by year and platform
`BWN`	Exterior package
`BYP`	Exterior package
`C25`	Exterior package	Meaning changes by year and platform
`C3A`	HVAC	Meaning changes by year and platform
`C3F`	GVWR or chassis package	Meaning changes by year and platform
`C3J`	GVWR or chassis package	Meaning changes by year and platform
`C3Q`	Interior trim
`C3U`	Exterior package
`C49`	HVAC
`C59`	HVAC	Meaning changes by year and platform
`C5H`	GVWR or chassis package
`C5U`	GVWR or chassis package
`C5W`	GVWR or chassis package	Meaning changes by year and platform
`C5Y`	GVWR or chassis package	Meaning changes by year and platform
`C5Z`	GVWR or chassis package	Meaning changes by year and platform
`C67`	HVAC
`C69`	HVAC	Meaning changes by year and platform
`C6A`	GVWR or chassis package	Meaning changes by year and platform
`C6C`	GVWR or chassis package	Meaning changes by year and platform
`C6G`	GVWR or chassis package	Meaning changes by year and platform
`C7A`	GVWR or chassis package	Meaning changes by year and platform
`C7E`	GVWR or chassis package	Meaning changes by year and platform
`C7G`	GVWR or chassis package	Meaning changes by year and platform
`C7V`	GVWR or chassis package	Meaning changes by year and platform
`CAV`	Interior trim
`CE1`	Exterior package
`CF5`	Exterior package	Meaning changes by year and platform
`CGN`	Exterior package
`CJ2`	HVAC
`CKF`	GVWR or chassis package
`CKJ`	GVWR or chassis package
`CKM`	GVWR or chassis package
`CTB`	Convenience equipment	Meaning changes by year and platform
`CTT`	Trailering and towing
`CWA`	Convenience equipment
`CWK`	Engine
`CWM`	Trim level
`CWN`	Trim level
`CXH`	Trim level	Meaning changes by year and platform
`D07`	Interior trim
`D31`	Exterior package	Meaning changes by year and platform
`D72`	Paint
`D75`	Exterior package	Meaning changes by year and platform
`D7A`	Exterior package	Meaning changes by year and platform
`D85`	Exterior package
`DBG`	Trailering and towing
`DCH`	Interior trim
`DCK`	Interior trim
`DD8`	Exterior package	Meaning changes by year and platform
`DEN`	Paint
`DEZ`	Exterior package
`DH6`	Exterior package
`DK1`	Interior trim
`DLF`	Exterior package
`DLN`	Exterior package
`DMQ`	Trailering and towing
`DP6`	Exterior package
`DP9`	Exterior package
`DPO`	Trailering and towing
`DQS`	Exterior package
`DRC`	Exterior package
`DRZ`	Convenience equipment
`DUD`	Trailering and towing
`DWI`	Trailering and towing
`DXR`	Exterior package
`DZC`	Trailering and towing
`E20`	Exterior package	Meaning changes by year and platform
`E3Z`	Exterior package
`E63`	Exterior package	Meaning changes by year and platform
`ENL`	Engine
`EPH`	Transmission
`EU2`	Wheels and tires
`F44`	GVWR or chassis package
`F47`	Suspension	Meaning changes by year and platform
`F51`	Suspension
`F58`	Suspension
`F59`	Suspension
`F60`	Suspension
`FE9`	Emissions
`FHS`	Engine
`FHX`	Engine
`FJW`	Engine
`FPF`	other
`G0S`	Trim level
`G1M`	Other
`G1Y`	GVWR or chassis package
`G3I`	GVWR or chassis package
`G48`	Exterior package
`G4H`	GVWR or chassis package
`G4Y`	GVWR or chassis package
`G50`	Suspension
`G51`	Suspension
`G60`	Suspension
`G6M`	Paint
`G7C`	Paint
`G80`	Axle and differential	Meaning changes by year and platform
`G86`	Axle and differential
`G87`	Axle and differential
`G93`	Axle and differential
`G94`	Axle and differential
`G96`	Axle and differential
`G9K`	other
`G9Y`	GVWR or chassis package
`GAN`	Paint
`GAO`	Paint
`GAZ`	Paint
`GBA`	Paint
`GED`	Other
`GEZ`	Fleet, police and special-servic
`GJ1`	Other
`GJI`	other
`GJW`	Other
`GLR`	Exterior package
`GLT`	Paint
`GLU`	Paint
`GMU`	Exterior package
`GNK`	other
`GS6`	Other
`GS7`	Paint
`GSK`	Other
`GT4`	Axle ratio
`GT5`	Axle ratio
`GTY`	Axle and differential	Meaning changes by year and platform
`GU4`	Axle ratio
`GU5`	Axle ratio
`GU6`	Axle ratio
`GXD`	Paint
`H1T`	Paint
`H2G`	Paint
`HC4`	Axle ratio
`HC7`	Axle ratio
`HD7`	Exterior package
`HP2`	Drivetrain
`HS1`	Convenience equipment
`IOK`	Convenience equipment
`IOR`	Convenience equipment
`IVE`	Convenience equipment
`IWD`	Interior trim
`J49`	Brake system
`J55`	Brake system
`J61`	Brake system
`J6F`	Brake system
`JBK`	Brake system
`JBP`	Brake system
`JC4`	Brake system
`JF3`	Brake system
`JF4`	Brake system
`JFG`	GVWR or chassis package
`JFH`	GVWR or chassis package
`JFJ`	GVWR or chassis package
`JFK`	GVWR or chassis package
`JFL`	GVWR or chassis package
`JFM`	GVWR or chassis package
`JFN`	GVWR or chassis package
`JFO`	GVWR or chassis package
`JFP`	GVWR or chassis package
`JGA`	GVWR or chassis package
`JGB`	GVWR or chassis package
`JGC`	GVWR or chassis package
`JGD`	GVWR or chassis package
`JGE`	GVWR or chassis package
`JGF`	GVWR or chassis package
`JGG`	GVWR or chassis package
`JGH`	GVWR or chassis package
`JGJ`	GVWR or chassis package
`JGK`	GVWR or chassis package
`JGL`	GVWR or chassis package
`JGM`	GVWR or chassis package
`JGN`	GVWR or chassis package
`JGP`	GVWR or chassis package
`JGQ`	GVWR or chassis package
`JGR`	GVWR or chassis package
`JGS`	GVWR or chassis package
`JGT`	GVWR or chassis package
`JH1`	Brake system
`JH6`	Brake system
`JH7`	Brake system
`JHD`	Brake system
`JL1`	Brake system
`JM8`	Brake system	Meaning changes by year and platform
`K05`	Engine
`K1O`	Engine
`K34`	Convenience equipment
`K3W`	Electrical
`K40`	Engine	Meaning changes by year and platform
`K47`	Engine
`K4C`	Electrical
`K4F`	Electrical
`K4Z`	Electrical
`K53`	Engine	Meaning changes by year and platform
`K6L`	Engine
`K7A`	Electrical
`K7D`	Electrical
`KA1`	Other
`KA6`	Seats
`KC4`	Engine
`KC5`	Electrical	Meaning changes by year and platform
`KC9`	Electrical
`KD4`	Electrical
`KGU`	Electrical
`KHF`	Electrical
`KI3`	Wheels and tires
`KI4`	Electrical
`KL9`	Engine
`KNP`	Transmission
`KQV`	Seats	Meaning changes by year and platform
`KSG`	Convenience equipment
`KUF`	Seats
`KW5`	Electrical
`KW7`	Electrical
`KX4`	Electrical
`L03`	Engine
`L05`	Engine
`L18`	Engine
`L19`	Engine
`L25`	Engine
`L33`	Engine
`L3B`	Engine
`L56`	Fuel system
`L59`	Engine
`L5P`	Engine
`L76`	Engine
`L82`	Engine
`L83`	Engine
`L84`	Engine
`L86`	Engine
`L87`	Engine
`L8T`	Engine
`L94`	Engine
`L96`	Engine
`L9H`	Engine
`LB4`	Engine
`LBZ`	Engine
`LC8`	Engine
`LC9`	Engine
`LF8`	Engine
`LFA`	Engine
`LH6`	Engine
`LH9`	Engine
`LL4`	Engine
`LLY`	Engine
`LM7`	Engine
`LMG`	Engine
`LML`	Engine
`LQ4`	Engine
`LQ9`	Engine
`LR4`	Engine
`LS9`	Engine
`LT4`	Engine	Meaning changes by year and platform
`LU3`	Engine
`LV3`	Engine
`LY5`	Engine
`LZ0`	Engine
`M20`	Transmission
`M30`	Transmission
`M32`	Transmission
`M33`	Transmission
`M49`	Transmission
`M70`	Transmission
`M99`	Transmission
`MFC`	Transmission
`MG5`	Transmission
`MGM`	Transmission
`MGU`	Transmission
`MHO`	Transmission
`MHS`	Transmission
`MHT`	Transmission
`MHU`	Transmission
`MI2`	Transmission
`MKM`	Transmission
`MM4`	Transmission
`MM5`	Transmission
`MQB`	Transmission
`MQC`	Transmission
`MQE`	Transmission
`MT1`	Transmission
`MW7`	Transmission
`MX0`	Transmission
`MX1`	Transmission
`MYC`	Transmission
`N06`	Interior trim
`N08`	Other	Meaning changes by year and platform
`N10`	Engine	Meaning changes by year and platform
`N2L`	Engine
`N2N`	Engine
`N33`	Steering
`N37`	Wheels and tires
`N38`	Interior trim
`N50`	Wheels and tires
`N53`	Wheels and tires
`N57`	Wheels and tires
`N5G`	Wheels and tires	Meaning changes by year and platform
`N5L`	Wheels and tires
`N5M`	Wheels and tires
`N5V`	Wheels and tires
`N5X`	Wheels and tires
`NAA`	Exterior package
`NB5`	Engine	Meaning changes by year and platform
`NB8`	Emissions
`NB9`	Emissions
`NC7`	Emissions
`NE1`	Emissions
`NHT`	Trailering and towing	Meaning changes by year and platform
`NK5`	Wheels and tires	Meaning changes by year and platform
`NKC`	Other
`NKR`	other
`NP0`	Transfer case
`NP1`	Transfer case
`NP2`	Transfer case
`NP3`	Transfer case
`NP5`	Wheels and tires	Meaning changes by year and platform
`NP8`	Transfer case
`NPP`	Engine
`NQF`	Drivetrain
`NQH`	Transfer case
`NV8`	Other
`NWM`	Trim level	Meaning changes by year and platform
`NZD`	Wheels and tires
`NZH`	Wheels and tires
`NZN`	Wheels and tires
`NZP`	Wheels and tires
`NZV`	Wheels and tires
`NZW`	Wheels and tires
`NZZ`	Suspension
`P03`	Wheels and tires	Meaning changes by year and platform
`P06`	Wheels and tires	Meaning changes by year and platform
`P0G`	other
`P0H`	Convenience equipment	Meaning changes by year and platform
`P0I`	Convenience equipment	Meaning changes by year and platform
`P0J`	Convenience equipment	Meaning changes by year and platform
`P0K`	Convenience equipment	Meaning changes by year and platform
`P0L`	Convenience equipment	Meaning changes by year and platform
`P0M`	Fleet, police and special-servic	Meaning changes by year and platform
`P0N`	Fleet, police and special-servic	Meaning changes by year and platform
`P0O`	Fleet, police and special-servic	Meaning changes by year and platform
`P0P`	Convenience equipment
`P0Q`	Convenience equipment
`P0R`	Convenience equipment
`P0U`	Convenience equipment
`P0V`	Convenience equipment
`P0W`	Convenience equipment
`P0X`	Convenience equipment
`P0Y`	Convenience equipment
`P0Z`	Convenience equipment
`P1R`	Convenience equipment
`P1S`	Convenience equipment
`P1T`	Convenience equipment
`P1U`	Convenience equipment
`PCH`	Seats	Meaning changes by year and platform
`PCI`	Trim level	Meaning changes by year and platform
`PCJ`	Convenience equipment	Meaning changes by year and platform
`PCK`	Trim level	Meaning changes by year and platform
`PCL`	Trim level	Meaning changes by year and platform
`PCM`	Trim level
`PCN`	Trim level	Meaning changes by year and platform
`PCO`	Trim level
`PCP`	Trim level	Meaning changes by year and platform
`PCQ`	Trim level	Meaning changes by year and platform
`PCR`	Trim level	Meaning changes by year and platform
`PCU`	Trim level
`PCV`	Convenience equipment
`PCW`	Convenience equipment	Meaning changes by year and platform
`PCX`	Trim level
`PCY`	Seats
`PCZ`	Trim level
`PDA`	Trim level
`PDB`	Trim level	Meaning changes by year and platform
`PDC`	Trim level	Meaning changes by year and platform
`PDD`	Trim level	Meaning changes by year and platform
`PDE`	Trim level
`PDF`	Trim level	Meaning changes by year and platform
`PDG`	Trim level	Meaning changes by year and platform
`PDH`	Trim level	Meaning changes by year and platform
`PDI`	Trim level	Meaning changes by year and platform
`PDJ`	Trim level	Meaning changes by year and platform
`PDK`	Trim level	Meaning changes by year and platform
`PDL`	Trim level	Meaning changes by year and platform
`PDM`	Other
`PDN`	Trim level	Meaning changes by year and platform
`PDO`	Trim level	Meaning changes by year and platform
`PDP`	Wheels and tires	Meaning changes by year and platform
`PDQ`	Trim level	Meaning changes by year and platform
`PDR`	Wheels and tires	Meaning changes by year and platform
`PDT`	Trim level	Meaning changes by year and platform
`PDU`	Trim level	Meaning changes by year and platform
`PDV`	Trim level	Meaning changes by year and platform
`PDW`	Trim level	Meaning changes by year and platform
`PDX`	Trim level
`PDY`	Convenience equipment	Meaning changes by year and platform
`PDZ`	Trim level
`PEB`	Trim level	Meaning changes by year and platform
`PEC`	Trim level
`PED`	Convenience equipment	Meaning changes by year and platform
`PEF`	Trim level
`PEH`	Trim level
`PPW`	Convenience equipment
`PQA`	Convenience equipment	Meaning changes by year and platform
`PQB`	Trim level	Meaning changes by year and platform
`PQG`	Convenience equipment
`PQH`	Convenience equipment
`PQI`	Convenience equipment
`PR7`	Convenience equipment
`PRB`	Convenience equipment
`PTO`	Other
`PTT`	Trailering and towing
`PTW`	Wheels and tires
`PXD`	Wheels and tires
`PXT`	Wheels and tires
`PYN`	Wheels and tires
`PYQ`	Wheels and tires
`PYT`	Wheels and tires
`PYV`	Wheels and tires
`PYW`	Wheels and tires
`PZ8`	Trailering and towing
`PZ9`	Engine	Meaning changes by year and platform
`PZG`	Exterior package
`PZL`	Axle and differential
`PZN`	Drivetrain
`PZX`	Wheels and tires
`PZZ`	Exterior package	Meaning changes by year and platform
`Q21`	Wheels and tires	Meaning changes by year and platform
`Q5U`	Wheels and tires
`Q7F`	Wheels and tires
`Q7H`	Wheels and tires
`Q7J`	Wheels and tires
`Q7N`	Wheels and tires
`Q7Q`	Wheels and tires
`Q81`	Wheels and tires	Meaning changes by year and platform
`Q86`	Wheels and tires	Meaning changes by year and platform
`Q89`	Wheels and tires	Meaning changes by year and platform
`Q8E`	Interior trim	Meaning changes by year and platform
`QAB`	Wheels and tires
`QAE`	Wheels and tires
`QAQ`	Wheels and tires	Meaning changes by year and platform
`QBN`	Wheels and tires	Meaning changes by year and platform
`QBR`	Wheels and tires
`QDF`	Wheels and tires
`QDS`	Wheels and tires
`QDV`	Wheels and tires
`QF6`	Wheels and tires
`QF9`	Wheels and tires	Meaning changes by year and platform
`QFG`	Wheels and tires
`QFL`	Wheels and tires	Meaning changes by year and platform
`QFV`	Wheels and tires
`QHQ`	Wheels and tires
`QHY`	Wheels and tires
`QK1`	Exterior package	Meaning changes by year and platform
`QK2`	Exterior package	Meaning changes by year and platform
`QKN`	Wheels and tires	Meaning changes by year and platform
`QMG`	Wheels and tires
`QNB`	Wheels and tires
`QNJ`	Wheels and tires	Meaning changes by year and platform
`QNN`	Wheels and tires
`QNO`	Wheels and tires
`QNZ`	Wheels and tires
`QT2`	Exterior package
`QT5`	Suspension
`QT6`	Exterior package
`QXT`	Wheels and tires	Meaning changes by year and platform
`QZT`	Wheels and tires
`R13`	Trim level
`R30`	Wheels and tires
`R3O`	Wheels and tires
`R4C`	Wheels and tires	Meaning changes by year and platform
`R4D`	Wheels and tires	Meaning changes by year and platform
`R4E`	Wheels and tires
`R4F`	Wheels and tires
`R4H`	Wheels and tires	Meaning changes by year and platform
`R4J`	Wheels and tires	Meaning changes by year and platform
`R4L`	Wheels and tires	Meaning changes by year and platform
`R4M`	Wheels and tires	Meaning changes by year and platform
`R5D`	Wheels and tires
`R6K`	Other
`R6P`	Convenience equipment
`R6Y`	Trim level	Meaning changes by year and platform
`R7O`	Seats
`R7S`	Other
`R7Z`	Convenience equipment
`R88`	Exterior package
`R8G`	Convenience equipment
`R8P`	Convenience equipment
`R8S`	Convenience equipment
`R8W`	Convenience equipment
`R8Z`	Convenience equipment
`R9L`	Convenience equipment
`R9M`	Convenience equipment
`R9V`	Other
`R9W`	Other
`R9Y`	Fleet, police and special-servic	Meaning changes by year and platform
`RB9`	Wheels and tires
`RBJ`	Wheels and tires
`RBR`	Wheels and tires
`RC1`	Exterior package
`RC5`	Wheels and tires
`RCS`	Wheels and tires
`RCV`	Wheels and tires
`RCW`	Wheels and tires
`RD1`	Wheels and tires
`RD2`	Wheels and tires
`RD3`	Wheels and tires
`RD4`	Wheels and tires
`RD5`	Wheels and tires
`RD6`	Wheels and tires
`RDI`	Interior trim
`RF1`	Wheels and tires
`RF2`	Wheels and tires
`RF3`	Wheels and tires
`RF4`	Wheels and tires
`RF5`	Wheels and tires
`RF7`	Wheels and tires
`RF9`	Wheels and tires
`RFE`	Trim level
`RFH`	Convenience equipment
`RFN`	Trim level
`RFO`	Trim level	Meaning changes by year and platform
`RFP`	Convenience equipment	Meaning changes by year and platform
`RFS`	Convenience equipment
`RFT`	Convenience equipment
`RFU`	Convenience equipment
`RFX`	Trim level
`RFY`	Convenience equipment
`RFZ`	Trim level
`RG4`	Fleet, police and special-servic
`RG7`	Fleet, police and special-servic	Meaning changes by year and platform
`RG8`	Trim level	Meaning changes by year and platform
`RGC`	Trim level	Meaning changes by year and platform
`RGD`	Trim level	Meaning changes by year and platform
`RGE`	Trim level	Meaning changes by year and platform
`RGF`	Trim level	Meaning changes by year and platform
`RGH`	Trim level
`RGJ`	Trim level	Meaning changes by year and platform
`RGK`	Trim level	Meaning changes by year and platform
`RGL`	Trim level
`RGM`	Trim level
`RGN`	Trim level
`RHF`	Wheels and tires
`RHM`	Wheels and tires
`RHO`	Wheels and tires
`RIA`	Interior trim
`RIB`	Trim level
`RIK`	Paint
`RM7`	Wheels and tires
`RMW`	Wheels and tires
`RN2`	Exterior package
`RN6`	Wheels and tires
`RNQ`	Wheels and tires	Meaning changes by year and platform
`RPP`	Wheels and tires
`RPS`	Wheels and tires	Meaning changes by year and platform
`RPT`	Wheels and tires	Meaning changes by year and platform
`RQL`	Wheels and tires
`RSI`	Interior trim
`RSL`	Wheels and tires
`RSR`	Convenience equipment
`RTL`	Wheels and tires
`RVP`	Exterior package
`RVQ`	Exterior package
`RVS`	Exterior package
`RVY`	Trim level
`RW9`	Wheels and tires
`RWL`	Wheels and tires
`RWQ`	Engine
`RWU`	Exterior package
`RXH`	Wheels and tires
`RXJ`	Wheels and tires
`RZ9`	Exterior package
`RZB`	Exterior package
`S08`	Other
`S0M`	Interior trim
`S0T`	Interior trim
`S1H`	Interior trim
`S1O`	Seats
`S1U`	Wheels and tires
`S1W`	Wheels and tires
`S2B`	Wheels and tires
`S2E`	Wheels and tires
`S3I`	Exterior package
`S3U`	Exterior package
`S41`	Wheels and tires
`S47`	Wheels and tires
`S4C`	Wheels and tires
`S4D`	Wheels and tires
`S4K`	Interior trim
`S4W`	Wheels and tires
`S4X`	Exterior package
`S6L`	Exterior package	Meaning changes by year and platform
`S6N`	Trailering and towing	Meaning changes by year and platform
`S8B`	Wheels and tires
`SAF`	Wheels and tires
`SAK`	Wheels and tires
`SAX`	Convenience equipment
`SAY`	Wheels and tires
`SB7`	Exterior package
`SBL`	Wheels and tires
`SBY`	Exterior package
`SBZ`	Interior trim
`SD3`	Interior trim
`SDT`	Trailering and towing
`SET`	Wheels and tires
`SEU`	Other
`SEV`	Wheels and tires
`SEZ`	Wheels and tires
`SF1`	Wheels and tires
`SF2`	Wheels and tires
`SF6`	Wheels and tires
`SFE`	Wheels and tires
`SFJ`	Exterior package
`SFU`	Wheels and tires
`SFW`	Electrical
`SFZ`	Exterior package
`SGF`	Wheels and tires
`SGG`	Wheels and tires
`SGM`	Wheels and tires
`SH0`	Wheels and tires
`SHH`	Wheels and tires
`SHT`	Trim level
`SII`	Wheels and tires
`SIY`	Wheels and tires
`SJ9`	Exterior package
`SJB`	Exterior package
`SJS`	Trim level
`SK3`	Electrical
`SK5`	Convenience equipment
`SKX`	Wheels and tires
`SMD`	Wheels and tires	Meaning changes by year and platform
`SMI`	Wheels and tires
`SML`	Wheels and tires
`SMM`	Wheels and tires
`SMR`	Wheels and tires
`SNO`	Trailering and towing
`SNR`	Seats	Meaning changes by year and platform
`SPY`	Wheels and tires
`SPZ`	Wheels and tires
`SQ9`	Wheels and tires
`SRI`	Wheels and tires
`SRL`	Wheels and tires
`SRV`	Wheels and tires	Meaning changes by year and platform
`SSI`	Wheels and tires
`SSW`	Wheels and tires
`SSX`	Wheels and tires
`ST1`	Trim level
`STH`	Trim level
`T3U`	Exterior package
`T40`	Exterior package	Meaning changes by year and platform
`T4A`	Exterior package
`T4L`	Exterior package
`T4Z`	Convenience equipment
`T53`	Suspension
`T8Z`	Convenience equipment
`T95`	Exterior package
`TAB`	Exterior package	Meaning changes by year and platform
`TAU`	Exterior package	Meaning changes by year and platform
`TB4`	Exterior package	Meaning changes by year and platform
`TB5`	Exterior package	Meaning changes by year and platform
`TCP`	Exterior package
`TDD`	Fleet, police and special-servic
`TDM`	Convenience equipment
`TGD`	Exterior package
`TGE`	Exterior package
`TGH`	Exterior package
`TGK`	Paint
`TGL`	Exterior package	Meaning changes by year and platform
`THS`	Trailering and towing
`TQ5`	Convenience equipment
`TR7`	Exterior package	Meaning changes by year and platform
`TRG`	Trailering and towing	Meaning changes by year and platform
`TRO`	Trailering and towing
`TRW`	Fleet, police and special-servic
`TSB`	Fleet, police and special-servic
`TUF`	Trim level
`U01`	Lighting
`U12`	Electrical	Meaning changes by year and platform
`U1D`	Trailering and towing
`U2J`	Convenience equipment
`U2K`	Convenience equipment
`U5G`	Convenience equipment
`U95`	Convenience equipment	Meaning changes by year and platform
`UAR`	other
`UBC`	Electrical
`UBD`	Electrical
`UBI`	Electrical
`UBJ`	Electrical
`UCB`	Electrical
`UCV`	Convenience equipment
`UD5`	Convenience equipment
`UD7`	Convenience equipment
`UDA`	Fleet, police and special-servic
`UDC`	Convenience equipment
`UDV`	Convenience equipment
`UE1`	Convenience equipment
`UE4`	Convenience equipment
`UET`	Trailering and towing	Meaning changes by year and platform
`UEU`	Convenience equipment	Meaning changes by year and platform
`UF2`	Lighting
`UF3`	Other	Meaning changes by year and platform
`UFB`	Convenience equipment
`UFG`	Convenience equipment
`UFL`	Convenience equipment
`UG1`	Interior trim
`UGA`	Exterior package
`UGN`	Convenience equipment
`UH5`	Convenience equipment
`UH6`	Convenience equipment
`UHN`	Wheels and tires
`UHX`	Convenience equipment
`UHY`	Convenience equipment
`UJ5`	Seats	Meaning changes by year and platform
`UJM`	Wheels and tires
`UJN`	Wheels and tires
`UK3`	Wheels and tires	Meaning changes by year and platform
`UKC`	Convenience equipment
`UKI`	Convenience equipment
`UKJ`	Convenience equipment
`UKK`	Convenience equipment
`UKL`	Convenience equipment
`UKM`	Convenience equipment
`UKT`	Convenience equipment
`UKV`	Trailering and towing
`UKW`	Trailering and towing
`UKZ`	Convenience equipment
`ULM`	other
`ULV`	Trim level	Meaning changes by year and platform
`UN9`	Convenience equipment	Meaning changes by year and platform
`UOW`	Convenience equipment
`UQA`	Convenience equipment	Meaning changes by year and platform
`UQF`	Convenience equipment
`UQH`	Convenience equipment
`UQP`	Convenience equipment
`UQS`	Convenience equipment
`URD`	Convenience equipment
`URF`	Convenience equipment
`URG`	Convenience equipment
`URR`	Convenience equipment
`URW`	Convenience equipment
`USA`	Trim level
`UT7`	Other
`UTJ`	Interior trim
`UTQ`	Electrical
`UTR`	Interior trim
`UTU`	Interior trim
`UTV`	Interior trim
`UTW`	Exterior package
`UV2`	Convenience equipment
`UV3`	Other
`UV6`	Convenience equipment	Meaning changes by year and platform
`UVB`	Convenience equipment
`UVN`	Convenience equipment
`UVO`	Convenience equipment
`UVX`	Other
`UVZ`	Convenience equipment
`UW9`	Seats
`UY2`	Trailering and towing	Meaning changes by year and platform
`V03`	Engine	Meaning changes by year and platform
`V1E`	Fleet, police and special-servic
`V27`	Exterior package
`V43`	Exterior package
`V46`	Exterior package	Meaning changes by year and platform
`V53`	Exterior package
`V54`	Exterior package	Meaning changes by year and platform
`V55`	Exterior package
`V76`	Trailering and towing
`VAV`	Interior trim	Meaning changes by year and platform
`VB3`	Exterior package
`VB5`	Exterior package	Meaning changes by year and platform
`VBJ`	Interior trim
`VDH`	Fleet, police and special-servic
`VH6`	Paint	Meaning changes by year and platform
`VHU`	Exterior package
`VJG`	Paint	Meaning changes by year and platform
`VJH`	Exterior package	Meaning changes by year and platform
`VK3`	Exterior package
`VKU`	Exterior package
`VKZ`	Fleet, police and special-servic
`VLG`	Exterior package
`VLQ`	Exterior package
`VNI`	Engine
`VOZ`	Exterior package
`VPB`	Exterior package
`VPN`	Fleet, police and special-servic
`VPS`	Exterior package
`VPV`	Fleet, police and special-servic
`VQH`	Exterior package
`VQK`	Paint
`VQM`	Exterior package
`VQO`	Exterior package
`VQQ`	Exterior package
`VQT`	Exterior package	Meaning changes by year and platform
`VQY`	Exterior package
`VQZ`	Engine
`VR4`	Trailering and towing
`VRS`	Interior trim
`VSX`	Trailering and towing
`VSY`	Engine
`VT2`	Exterior package
`VT5`	Exterior package	Meaning changes by year and platform
`VTA`	Engine	Meaning changes by year and platform
`VTB`	Exterior package
`VTI`	Exterior package
`VTP`	Exterior package
`VV4`	Convenience equipment
`VW9`	Wheels and tires
`VWD`	Wheels and tires
`VXH`	Exterior package	Meaning changes by year and platform
`VXJ`	Exterior package
`VXT`	Other	Meaning changes by year and platform
`VXW`	Exterior package	Meaning changes by year and platform
`VYN`	Wheels and tires
`VYP`	Wheels and tires	Meaning changes by year and platform
`VYU`	GVWR or chassis package
`VYW`	Interior trim
`VZ2`	Fleet, police and special-servic
`VZX`	Exterior package
`W2D`	Interior trim
`WBC`	Engine
`WBL`	Trim level
`WBP`	Trim level
`WGQ`	Trim level
`WJP`	Trim level	Meaning changes by year and platform
`WLE`	Exterior package
`WMI`	Exterior package
`WPK`	Transmission	Meaning changes by year and platform
`WPL`	Trim level
`WPQ`	Trim level
`WR1`	Wheels and tires
`WR4`	Wheels and tires
`WTX`	Exterior package
`WUA`	Exterior package
`WX7`	Convenience equipment	Meaning changes by year and platform
`X31`	Suspension
`XCE`	Wheels and tires	Meaning changes by year and platform
`XCG`	Wheels and tires
`XCI`	Wheels and tires
`XCK`	Wheels and tires	Meaning changes by year and platform
`XCQ`	Wheels and tires
`XCS`	Wheels and tires
`XGD`	Wheels and tires	Meaning changes by year and platform
`Y55`	Trim level
`YF5`	Emissions
`Z45`	Suspension
`Z49`	Canadian or export equipment
`Z60`	Suspension	Meaning changes by year and platform
`Z6A`	Trailering and towing
`Z6E`	Drivetrain	Meaning changes by year and platform
`Z71`	Suspension	Meaning changes by year and platform
`Z7X`	Suspension
`Z81`	GVWR or chassis package
`Z82`	Trailering and towing	Meaning changes by year and platform
`Z85`	Suspension
`Z95`	Suspension
`ZAE`	Wheels and tires
`ZHQ`	Wheels and tires	Meaning changes by year and platform
`ZL6`	Trailering and towing
`ZLQ`	Trim level	Meaning changes by year and platform
`ZM1`	Trailering and towing
`ZM9`	Trim level	Meaning changes by year and platform
`ZN7`	Axle ratio
`ZN8`	Axle ratio
`ZN9`	Axle ratio
`ZQ8`	Suspension
`ZR3`	Trim level	Meaning changes by year and platform
`ZRX`	Suspension
`ZW7`	Suspension	Meaning changes by year and platform
`ZW9`	Body configuration	Meaning changes by year and platform
`ZXT`	Wheels and tires
`ZYG`	Wheels and tires
`ZZT`	Wheels and tires

What a Regular Production Option code is

RPO stands for Regular Production Option. Every piece of factory equipment on a GM vehicle carries a three-character code — G80 is a locking differential, Z71 is an off-road suspension package, K05 is a block heater. The codes describe how the truck was built at the factory, not what has been changed since.

Where to find your SPID label

The codes are printed on the Service Parts Identification (SPID) label. On most full-size GM trucks it is inside the glove box lid; on some it is on the driver’s door jamb, the centre console lid, or under the rear seat. Photograph it square-on in good light and the decoder will read it for you.

What this decoder actually covers

This is documented coverage, not complete coverage. Every meaning shown is tied to a specific GM document, page and model year. Where we have not yet sourced a factory document, we say so rather than guessing.

Generation	Documented applications	Years covered
GMT400	51	1990
GMT400 / GMT800 transition	17	2000
GMT800	49	2007
GMT900	12	2007–2013
K2XX	324	2016–2020
Squarebody	23	1973
T1XX	8712	2019–2026
Unknown	42588	0–1999

Coverage is strongest on GMT800 (2007 Classic), the 2016 K2XX special-application range, and current T1XX fleet configurations. Squarebody and GMT900 are the thinnest and are being expanded.

Found a code we are missing, or one we have wrong?

Send it with the document or photo that supports it. A photo of your own SPID label proves a code appeared on your truck — we still need a factory document before we publish what it means, so both are useful for different reasons.

Redact your VIN before sending any label photo.

Post it on the forum

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 can vary by model year, platform and configuration. Verify the applicability shown before ordering parts or making repairs.

Decode your RPO codes

Post this in your build thread

Verified code reference

What a Regular Production Option code is

Where to find your SPID label

What this decoder actually covers

Found a code we are missing, or one we have wrong?