Official GM Web Site http://www.gm.com
General Motors Production Options.
The following Regular Production Option (RPO) codes identify the rear axle and transaxle overall final drive gear Ratios. These codes can be located on the RPO sticker in the glove box or in the trunk on most GM vehicles. Axle codes typically begin with the letter D, F, G, H, or Numerical.


These codes are arranged in alphanumeric order.

• D-codes are typically front-wheel drive vehicles.
• F-codes are typically front-wheel drive vehicles.
• G-codes are typically rear-wheel drive vehicles.
• H-codes are typically medium-duty trucks.
• Numerical codes are typically medium-duty trucks.

D-codes
F-codes -
G-codes -
H-codes -
Numerical Codes (MD Trucks) -
Imported GM Vehicles

 

shouldnt the gu 7 be a 373.

 

Yes, looks like there is an error in the chart.

 

I see i have a 273 instead of the 342 I was told I had. RPM's make sense now!

 

This RPO sticker is also on the Driver side door-jamb.

 

the links no longer works, not for me anyways

 

Not for me either.

 

G Codes

RPO Ratio Axle Type
G44 3.07 Rear
G72 2.14 Rear
G75 3.62 Rear
G82 4.33 Transaxle
G83 4.47 Transaxle
G84 3.70 Rear
G89 4.13 Transaxle
G90 3.15 Rear
G91 6.83 Rear
GH0 3.54 Rear
GH1 3.55 Rear
GH2 2.29 Rear
GH3 2.77 Rear
GH4 2.28 Rear
GH7 2.73 Rear
GJ1 5.38 Rear
GJ2 5.13 Rear
GK7 4.78 Rear
GK8 4.33 Rear
GK9 4.63 Rear
GL0 5.13 Rear
GL3 6.17 Rear
GM0 3.58 Rear
GM1 2.59 Rear
GM2 3.44 Rear
GM3 3.45 Rear
GM4 3.67 Rear
GM5 3.89 Rear
GM6 4.22 Rear
GM7 2.39 Rear
GM8 2.56 Rear
GM9 3.63 Rear
GN9 4.11 Rear
GS0 6.43 Rear
GS4 2.70 Rear
GS8 3.94 Transaxle
GS9 3.46 Rear
GT1 5.63 Rear
GT2 4.77 Rear
GT3 4.55 Rear
GT4 3.73 Rear
GT5 4.10 Rear
GT6 4.19 Transaxle
GT7 3.33 Rear
GT8 4.10 Rear
GT9 2.87 Rear
GU1 2.41 Rear
GU2 2.73 Rear
GU3 2.93 Rear
GU4 3.08 Rear
GU5 3.23 Rear
GU6 3.42 Rear
GU7 3.73 Rear
GU8 3.90 Rear
GU9 3.91 Rear
GV0 3.55 Rear
GV1 3.85 Rear
GV2 5.83 Rear
GV3 3.57 Rear
GV4 3.36 Rear
GV5 3.82 Rear
GV7 4.05 Rear
GV8 2.72 Rear
GV9 4.25 Rear
GW1 3.91 Rear
GW4 3.31 Rear
GW5 3.16 Transaxle
GW6 3.27 Rear
GW8 2.92 Rear
GW9 2.93 Rear
GX1 5.43 Rear
GX3 3.33 Transaxle
GX4 3.75 Rear
GX5 4.09 Rear
GX6 3.53 Rear
GX8 3.74 Transaxle
GY1 3.85 Transaxle
GY2 4.30 Rear
GY3 4.29 Transaxle
GY4 4.53 Rear
GY5 3.75 Front
GY7 4.18 Transaxle
GY9 4.31 Rear

 

I'm saving that as a text file. Thanks!

 

Complete list for 93-02 Firebird & Camaro?

A31 power windows
AAA factory tint
AC3 power 6 way, bucket, driver
AG1 Adjuster, 6-Way Power, Driver Seat
AG4 Adjuster, 2-Way Manual, Driver Seat
AR9 front bucket, european style, passenger & driver
AH3 Adjuster, 4-Way Manual, Driver Seat
AK5 Restraint System Front Seat, Inflatable, Driver and Passenger
AN4 Restraint Provisions, Child
AQ9 Seat, Passenger and Driver, Recline
AUO Lock Control, Remote Entry
AUD remote keyless entry
AU3 Lock, Side Door, Electric
A31 Window, Power Operated, Side
A90 Lock, Rear Compartment Lid, Remote Control, Electric
B35 Floor Mats, Rear, Carpeted Insert
B84 Exterior Molding, Body Side
CC1 Roof Hatch, Removable Glass Panels
C41 HVAC System, Heater
C49 Defogger, Rear Window Electric
C60 HVAC System, Air Conditioner, Manual Control
DD9 Mirror, Outside, LH & RH, Remote Control, Electric, Breakaway, Painted
DE4 Sunshade, Removable Hatch Roof
DG7 Mirror, Outside LH & RH, Remote Control, Electric, Painted
DL5 Decal Roadside Service Information
D35 Mirror, Outside LH Remote, RH Manual, Painted
D5X gear-driven speedometer
D81 "GT" raised spoiler
D82 Paint Special
FE2 Suspension system, Ride handling
FE9 Certification Emission, Federal
F41 Suspension System, Firm Ride Handling, Front and Rear
GU2 Axle, Rear 2.73 Ratio
GU3 auto tranny,
GU4 Axle, Rear 3.08 Ratio
GU5 Axle, Rear 3.23 Ratio
GU6 Axle, Rear 3.42 Ratio
G80 Axle, Rear Posi-traction (Limited Slip)
G92 performance suspension package
ILD Trim, Interior Design
IL2 Trim, Interior Design
IPB Trim, Interior Design
IP2 Seat, Leather Sport Front Bucket, Driver & Passenger, Reclining
J41 Brake System, Power, Front Disc, Rear Drum, Cast Iron
J65 Brake System, Power, Front and Rear Disc
KC4 cooling system, engine oil
KG9 Generator, 140 Amp
K05 Heater, Engine Block
K34 Cruise Control, Automatic Electronic
K68 Generator, 1 05 Amp
LT1 Engine, 5.7L (V8) MFI
LS1 Engine, 5.7L (V8) MFI
L36 Engine, 3.8L (V6) MFI
MD8 THM 700 R4 auto tranny
MM5 Transmission, 5-Speed Manual (Merchandising Option)
MM6 Transmission, Manual, 6-Speed, Borg Warner, 65mm, 2.66 1st, 0.50 6th, O/D
MN6 Transmission - 6-Speed Manual (merchandising Option)
MXO Transmission - Automatic O/D (Merchandising Option)
M30 Transmission - Automatic, 4-Speed, 4LE, Electronic
M49 Transmission, Manual, 5-Speed, Borg Warner, 77mm, 3.75 1st, 0.76 5th, O/D
NA5 emission, federal, tier 0
NB6 Emission System, California Requirements, Tier 1
NC3 Tailpipe Modifications
NF2 Emission System- Federal Requirement, Tier 1
NK3 Steering Wheel, Sport, Soft Rim, Simulated Leather
NP5 Steering Wheel, Leather Wrapped
NW9 ASR Traction Control
N36 Steering Wheel, 4-Spokes, Sport
N60 Wheel, Aluminum, Painted
N92 Cover, Wheel, Bolt-On
N96 Wheel, 16x8, Cast Aluminum
N98 Wheel, Chrome, Var 2
P05 Wheel, Chrome, Var 1
P08 Cover, Wheel, Super Deluxe
PA6 Wheel, styled, painted
PW7 16 x 8 alloy wheels
QA7 Wheel, 16x7.5, Aluminum
QB3 Wheel, 16x7.5, Steel
QEA Tire, P215/6OR16 BW R/Pe ST TL AL2 94T
QFZ Tire, P24515OZR16 BW R/PE ST TL AL3
QII Tire, P21516OR16 BW R/PE ST TL AL3 94H
QLC Tire, P24515OZR161N BL R/PE ST TL HW4
R7N Control sales item no. 39
R7X Control sales item no. 48
STE Plant Code-St. Therese, PQ, GM of Canada
TR7 Headlamps, Automatic Control Leveling System
T39 Lamp Turn Signal, Auxiliary
T43 Spoiler, Rear
T61 Lighting- Daytime Running
T78 Headlamp control delete
T96 Lamp, Fog
UA6 Theft Deterrent System
UB3 Instrument Cluster, Oil, Coolant, Temperature, Volts, Trip Odometer, Tachometer
UK2 Lever, Directional Signal, Multifunction
UK3 Electronic System Accessory Control
UL0 AM/FM Cassette ETR 200 Watt Monsoon Sound System w/cassette
UN0 AM/FM Cassette ETR 200 Watt Monsoon Sound System w/CD player
UN6 Radio, AM/FM stereo, Seek/Scan, Auto Reverse Music Search Cassette, Clock, ETR
UQ0 Speaker System 4, Dual Front Door Mounted, Standard Range Quarter/Shelf
UU8 Radio, AM/FM Stereo, Seek/Scan, Auto Reverse Music Search Cassette, HPS, Clock, ETR
U1A CD radio, 10 speaker
U1C Radio, AM/FM Stereo, Seek/scan, Compact Disc, Clock, ETR
U1S 12 Disc Compact Disc Changer
U1T Radio, AM/FM Stereo, Seek/Scan, Compact Disc, HPS, Clock, ETR
U18 Speedometer Instrument Kilometers
U19 Speedometer Instrument, Kilometers and Miles, Kilometer Odometer
U62 Speaker system 4, Dual Coax Front, Dual Coaxial Package shelf
U65 Speaker system 5, Dual Front Door Mtd, Dual Ext. Range Panel, Single Rear Compartment
U73 Antenna, Fixed
U75 Antenna, Power
UT6 AM/FM stereo, seek/scan, auto rev
UW2 speaker system, 10, quad front door mounted, dual rear sail panel
V73 vehicle statement, US/CANADA
VG8 Label, Vehicle, Notice to Buyer
VH5 Plate, Vehicle Information
VK3 License Plate, Front Mount Package
VM3 label information consumer, contains bumper impact standared
VP6 Noise Control
WS6 Performance Package - Formula/Trans Am
WS9 model conversion, FORMULA
WU8 SS Performance Package/Appearance Package - Camaro
W51 Entertainment system - Radio, AM/FM-stereo, seek/scan, cassette, 4 Speaker system · Standard Range
W52 Entertainment System - Radio, AM/FM stereo, Cassette, Equalizer, 4 Speaker system - Coaxial
W53 Entertainment System - Radio, AM/FM Stereo, Compact Disc, Equalizer 4 Speaker System - Coaxial
W54 Entertainment System - Radio, AM/FM Stereo, Cassette, Equalizer, 10 Speaker System, Amplifier
W55 Entertainment System - Radio, AM/FM Stereo, Compact Disc, Equalizer 10 Speaker System, Amplifier
W57 Entertainment system - Radio, AM/FM stereo, Cassette, Equalizer, 4 Speaker system - Coaxial
W58 Entertainment system - Radio, AM/FM Stereo, Compact Disc, Equalizer, 4 Speaker system - Coaxial
W59 Entertainment system - Radio, AM/FM Stereo, Cassette, Equalizer, 6 Speaker System, Dual Front Door Tweeters/Woofers, Extended Range Shelf
W66 Merchandised Package - Formula
W68 Aero Appearance Package
W73 Entertainment system - Radio, AM/FM Stereo, Compact Disc, Equalizer, 6 Speaker system, Dual Front Door Tweeters/Woofers, Extended Range Shelf
Y81 Merchandised Package - Firebird
Y82 Merchandised Package - Trans Am, Base Coupe
Y83 Trans Am model
Y84 Merchandised Package - Trans Am
Y87 Merchandised Package - Performance Enhancement
Z28 Merchandised Package - Special Performance
Z49 Canadian Modifications
01U Primary Color exterior, Special
05Q Molding Color, Cyclamen
O5U Primary Color Exterior, Cyclamen
1LE Performance Package Components
101 Interior Trim - Arctic White
1OT Top Color - Arctic White
102 Trim Combination Leather, Arctic White
1OQ Molding Color - Arctic White
1OU Primary Color - Exterior, Arctic White
12B Trim Combination - Cloth, Graphite
12D Trim Combination - Cloth, Graphite
121 Interior Trim - Graphite
14B Trim Combination - Cloth, Dark Gray
1SG Preferred Equipment Group
28U Primary Color - Exterior, Navy Blue Metallic
1SA option package 01
1SC package option 03
1SZ discount option package
37Q exterior molding color, manta green metallic
17P wheel color, silver mist metallic
37U primary color, exterior, memphis blue metallic
142 Trim combination, leather very dark gray (to be updated)
14L Trim/Leather combination (to be updated)
17P wheel color; silver
6ZM Component front LH computer Sel Susp
7ZM Component front RH computer Sel Susp
8TH rear springs
9TH rear springs
81Q molding color, bright red
81U exterior color, bright red
7ZM Component frt rh computer sel susp
6ZM Component frt lh computer sel susp
142 Trim combination, leather very dark gray Camaro and Firebird
14I Interior trim very dark gray ;...not 141
V73 Vehicle statement, USA/Canada
T78 Headlamp control delete
R7X Control sales item no. 48
R7N Control sales item no. 39
PA6 Wheel, styled, paintedQCB TIRE ALL P235/55R16 BW R/PE ST TL AL2 96T TIRE(QCB)
R9P,CONTROL - SALES ITEM NO. 90
WT4,HANDLING CHARGE - GM ST THERESE TO SVE MONT ROYAL QUEBEC FOR UPFITTER CONVERSION (VTIMS)
1SB, PACKAGE-OPTION 02 (1SB)
14B, TRIM COMBINATION - CLOTH, GRAY (14B)
14I ,INTERIOR TRIM LT GRAY (14I)
41U, EXTERIOR COLOR,PRIMARY (41U)EXTERIOR COLOR,PRIMARY,BLACK (41U)
6PU, COMPONENT FRT LH COMPTR SEL SUSP(6PU) SUSP(6PU)
7PU, COMPONENT FRT RH COMPTR SEL SUSP(7PU) SUSP(7PU)
8TJ,COMPONENT RR LH COMPUTER SEL SUSP (8TJ) SUSP(8TJ)
9TJ,COMPONENT RR RH COMPUTER SEL SUSP (9TJ) SUSP(9TJ)