RPO Codes
 

Here's the list, if you have any that are not listed here, let me know I'll look it up and list it

List updated on Nov 10, 2006, thank you to boostnsrt Mischief007 & Cliff8928 for the additonal information!!

I'm also looking for more color codes so get'em up!

AR9 : FR BUCKET SEATS W/RECLINER
AG1 : ADJUSTER, FRT ST, POWER, 6 WAY DRIVER, SPLIT BENCH
AK5 : RESTRAINT SYSTEM, FRT SEAT, INFLATABLE, DRIVER
AS5 : SEAT, FRT BKT, DELUXE
AT8 : CHILD RESTRAINT PROV
AU0 : LOCK CONTROL, REMOTE ENTRY – KEYLESS ENTRY (DOMESTIC)
CF5 : ROOF, SUN, GLASS SLIDING, ELEC
C60 : HVAC SYSTEM, AIR CONDITIONER FRT MAN CONTROLS
D22 : MIRROR O/S RH BELOW EYELINE, 6 S X 9, AERODYN
D35 : MIRRORS OUTSIDE BLACK
DD9 : MIRROR O/S, LH & RH, RE4 CONT, ELEC, BREAKAWAY
DL5 : DECAL, ROADSIDE SERVICE INFORMATION
DT4 : TRAY, ASH, CIGARETTE LIGHTER
FE2 : SUSPENSION SYSTEM, RIDE HANDLING
FE3 : SUSPENSION, SYSTEM, SPORT
FE9 : 50 STATE LOW EMISSION VEH
FX1 : RATIO, TRANSALXE FINAL DRIVE 3.94
FW6 : RATIO FINAL DRIVE 3.42
F83 : RATIO FINAL DRIVE 3.05
IJ2 :
IPB : OPT CLOTH SEATING AREAS
JL9 : BRAKE, SYSTEM, PWR, FRT a RR OISC, ANTILOCK, FRT W
K05 : HEATER, ENGINE BLOCK
K34 : CRUISE CONTROL
K61 : GENERATOR 105A FANS ENHANCED
K61 : GENERATOR, 97 AMP (CANADAIN CODE)
K62 - Generator, CS 130-D, 105 Amp, Dual Int Fan
LAA : LANSING SOUTH PLANT
LA1 - ENGINE GAS, 6 CYLINDER, 3.4L, MFI, HO
LD9 - ENGINE GAS, 4 CYLINDER, 2.4L, MFI, DOHC
L61 : ECOTEC 2.2 LITER
MN4 - TRANSMISSION, AUTOMATIC 4 SPEED, 4T40E
MN5 - TRANSMISSION, AUTOMATIC 4 SPEED, 4T45E
MM5 : MERCHANDISED TRASN, MAN 5 SPD PROVISIONS
MXO : MERCHANDISED, TRANS, AUTO PROVISIONS, O/D
NC1 : EMISSION SYSTEM CALIFORNIA, LEV
NG1 : CERTIFACTION, EMISSIONS, GEOGRAPHICALLY RESTRICTED
NF7 : NLEV
NK5 : STANDARD STEERING WHEEL
NP5 : LEATHER WRAPPED, STEERING WHEEL AND SHIFT KNOB
PG1 : BOLT ON WHEELS COVERS
PY0 : WHEEL, 16 X 6.5, ALUMINUM
QCD : P215/60R 15 RADIAL TOURING TIRES
QD1 : 16" ALLOY WHEEL
QQK : TIRE, 225 50R16 TOURING
RBI : CONTROL MODULAR I/P
RC8 :
R9S : STANDARD OWNER CARE WARRENTY
R95 :
T37 : LAMP, FOG, DELUXE
T43 : SPOILER, RR
UH8 : CLUSTER - INST, COOL TEMP, TRIP ODOM, TACH
UP0 : RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV MUSIC
UQ2 : SPEAKER SYSTEM, 6, DUAL F/D MIR PATCH TWT, DUAL F/D
UQ8 : EXTENDED RANGE REAR SPEAKERS
U19 : AM/FM STEREO W/CD
U73 FIXED ANTENNA
U77 : ANTENNA, RR WINDOW, RADIO
VH9 : ENVELOPE, OWNER INFO MAN
VK3 : LICENSE PLATE, FRT MOUNTING PKG
VM3 : LABEL INFORMATION - CONSUMER, CONTAINS BMP IMP STANDARD
VY7 : KNOB, TRANS CONT LEVER, LEATHER
V73 : ANTENNA, FIXED
W33 :
Y71 : PAINT, LWR BODY SCHEME
Z49 : MANDATORY CANADIAN BASE EQUIP MODIFICATIONS
1SA : OPTION PACKAGE 01
1SZ : OPTION PACKAGE DISCOUNT
52I : INTERIOR TRIM, LT NEUTRAL (I) (92)
522 : TRIM COMBINATION, LEATHER, LT NEUTRAL (2) (92)
6DB : SPRING, COMPUTER SELECTED, FRONT, LEFT HAND
7DB : SPRING, COMPUTER SELECTED, FRONT, RIGHT HAND
8BU : COMPUTER SELECTED SUSPENSION
28U : MIDNIGHT BLUE
81U : PRIMARY COLOR, EXTERIOR, BRIGHT RED (91)
9BU : COMPUTER SELECTED SUSPENSION
92B : PEWTER CLOTH
92I : GREY

This is an awesome resource, I have the following codes that aren't listed:
B0G
B34
B35
D22
IJE
KCV
NT9
PDP
QSK
R6F
U1P
VN9
V2G
V73
Y72
1SB
33U
52E
6AW
7AW
8DY
9DY
Most of them are probably for minor things like window decals (they're very specific aren't they?) but it'd be cool to know what they all mean. Also, this list helped put to rest my thought that I may have remote keyless entry but no keyfob...I do not.

M86 - F23, 5-SPEED
QSK - TIRE, 225 50R16 PERFORMANCE
SLM - STOCK ORDER, PROCESSING CODE
U1P - RADIO, AM STEREO/FM STEREO/WX/TV, SEEK/SCAN, AUTO
U19 - SPEEDOMETER,INST, KILO & MILES, KILO ODOMETER <-- confirmed that
U85 - SPEAKER SYSTEM, 8 QUAD FRT DR MTD, SHELF QUAD
1SC - OPTION PACKAGE 03
12U - PRIMARY COLOR, EXTERIOR SILVER MET
92E - TRIM COMBINATION CLOTH, MEDIUM DARK PEWTER

Got some more figured out. Almost have the complete list for my car.

and what is this for??? I'm confused. lol

Regular Production Option codes, listed on the underside of your spare tire cover.

B34 = Floor Mats
JM4 = ABS w/Traction ControlU1Q = AM/ FM Cassette / CD
U2K = XM Satellite Radio
YF5 = California Emissions Requirement
1SF = GL 1SF Pkg. Standard Equipment (Fleet)
PCR = Sun & Sound Package
Y11 = Gold Package
PDP = Performance Suspension Package
PDE = GX Sport Package

RPO Codes Europ Models
 

I know this thread is old, but it could be helpful for other owners of an european Alero. Here is the breakdown of my VIN incl. all RPO Codes. There are some minor differences to the US Models like the famous T84 code for export Headlamps.

Vehicle: ALERO GLS 4 DR
Year: 1999
Build Date: Unk.
RPO Description

UES PROVISIONS EXTERIOR EQUIPMENT, EXPORT EXT EQUIP(UES)(EXPORT)
UH8 CLUSTER-COOL TEMP, TACH, TRIP ODOM GA(UH8)
UL2 RADIO FREQUENCY(EUROPEAN) EUROPEAN RDO FREQ(UL2)
UP0 RADIO AM/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, CD, AUTO TONE, CLOCK, ETR. STEREO,AM/FM W/AUTO REV CASSETTE,CD,AUTO TONE(UP0)
UQ2 SPEAKER SYSTEM,4-SPEAKER,F/D MIR PATCH TWT,F/D HSS,EXT RGE RR QTR SPKR SYS(UQ2)
U18 SPEEDOMETER,INSTRUMENT,KILOMETER(EXPORT) KILOMETER SPEEDO(U18)
U77 ANTENNA RR WINDOW, RADIO RR WDO ANT(U77)
VC5 LABEL - SHIPPING, EXCEPT US, US POSSESSIONS, OR JAPAN LABEL SHIPPING LABEL USED OUTSIDE U.S. AND JAPAN(VC5)
VG9 PROTECTOR WAX,EXT BODY(EXPORT) PROTECTIVE BODY WAX(VG9)
VH5 PLATE,VEHICLE IDENTIFICATION(EXPORT) VEH ID PLT(VH5)
VJ4 LABEL, EXPORT CHILD SEAT LOCATION LABEL CHILD SEAT LOCATION(VJ4)(EXPORT)
VL2 LABEL, SPARE CAUTION, COMPACT SPARE COMPACT SPA TIRE LABEL(VL2)
VL5 LICENSE PLATE,REAR MOUNTING PACKAGE(EXPORT) RR LIC PLT MTG PKG(VL5)
VL6 LICENSE PLATE,FRONT MOUNTING PACKAGE(EXPORT) FRT LICENSE PLAT MOUNTING PKG(VL6)
VR6 HOOK,TIE DOWN TIE DOWN HOOK(VR6)
VY7 KNOB,TRANSMISSION CONTROL LEVER,LEATHER LEATHER SHFT KNOB(VY7)
V78 VEHICLE STATEMENT(DELETE)(EXPORT) V78)
X88 MARKET BRAND CHEVROLET CHEVROLET(X88)(EXPORT)
Y71 HEADLINER PARTS PKG-SUNROOF HDLNR PTS PKG-SUNROOF(Y71)
1SD PACKAGE-OPTION 04 (1SD)
41U EXTERIOR COLOR,PRIMARY,BLACK (41U)
52I INTERIOR TRIM LIGHT NEUTRAL (52I)
522 TRIM COMBINATION - LEATHER, NEUTRAL (522)
6AY COMPONENT FRT LH COMPUTER SEL SUSP SUSP(6AY)
7AY COMPONENT FRT RH COMPUTER SEL SUSP (7AY) SUSP(7AY)
8DY COMPONENT RR LH COMPUTER SEL SUSP (8DY) SUSP(8DY)
9DY COMPONENT RR RH COMPUTER SEL SUSP (9DY) SUSP(9DY)
AG1 ADJUSTER FRT ST POWER, MULTI-DIRECTIONAL, DRIVER MULTI-DIRECTIONAL PWR D/SEAT ADJR(AG1)
AM4 SEAT,RR SPLIT BACK,FOLDING,CUSTOM FLDG R/SEAT(AM4)
AU8 LOCK CONTROL REMOTE ENTRY, SPECIFIC FREQUENCY REMOTE ENTRY LK CONT(AU8)
A26 WINDOW,UNITED KINGDOM AND EUROPEAN GLAZING(EXPORT) EUROPEAN WDO GLAZING(A26)(EXPORT)
A37 RESTRAINT SYSTEM FRT SEAT, DELUXE TYPE(EXPORT) FRT SEAT RST SYS(DELUXE)(EXPORT)(A37)
A51 SEAT,FRT BUCKET,CUSTOM CUSTOM FRT BKT ST(A51)
CE7 CERTIFICATION EMISSION, EXPORTED VEHICLE CERTIFIED EMISSION FOR EXPORT(CE7)
CF5 ROOF,SUN,GLASS SLIDING,ELECTRIC ELEC SUNROOF(GLASS)(CF5)
CT3 COUNTRY,GERMANY(EXPORT) GERMANY(CT3)
C60 AIR CONDITIONER,FRONT,MANUAL CONTROLS A/C MAN CONT(C60)
DD9 MIRROR,OUTSIDE,RH AND LH REMOTE CONTROL ELECTRIC,BREAKAWAY(PAINTED) O/S ELEC R/CON PAINTED MIR(DD9)
DT3 BOX RR STOW COMPT BOX,RR STOW CMPT(DT3)
DT4 ASH RECEPTACLE AND CIGARETTE LIGHTER ASH TRAY & C/LTR(DT4)
EXP EXPORT - I.E.S. EXPORT I.E.S. EXPORT-SPECIFIC MARKET AREA EQUIPMENT(EXP)
FE3 SUSPENSION SYSTEM,SPORT SPORT SUSP(FE3)
F83 RATIO TRANSAXLE FINAL DRIVE 3.05 3.05R(F83)
IJ2 TRIM INTERIOR DESIGN (J2) INTERIOR TRIM(IJ2)
JE1 BRAKE SYSTEM(EUROPE)(EXPORT) EUROPEAN BRK(JE1)(EXPORT)
K62 GENERATOR 105 AMP, DUAL INTERNAL FAN DUAL FAN 105 AMP GEN(K62)
LAA PLANT CODE LANSING ASSEMBLY 'C' LINE LANSING,MI 'C' LINE PLANT CODE(LAA)
LA1 ENGINE GAS, 6 CYL, 3.4L, MFI, HO 3.4E(LA1)
MAE MARKETING AREA EUROPE(EXPORT) EUROPE(MAE)
MN5 TRANSMISSION AUTO 4 SPD, 4T45-E 4-SPD A/TRANS(MN5)
MX0 TRANSMISSION,AUTOMATIC,OVERDRIVE(MERCHANDISING OPTION) A/TRANS PROVISIONS(MX0)
NA7 EMISSION SYSTEM EUROPEAN EUROPEAN EMISSION(NA7)
NP5 STEERING WHEEL,LEATHER WRAPPED LEATHER WRAPPED STRG WHL(NP5)
N05 LOCK,FUEL FILLER CAP FUEL FIL LKG CAP(N05)
PF7 WHEEL,15X6,STYLED(ALUMINUM) STYLED AL WHL(PF7)
QLM Unknown
RD0 Unknown
R7K CONTROL - SALES ITEM NO. 36
TR2 LAMP,TURN SIGNAL,ENLARGED(EXPORT) ENLARGED T/SIG LP(TR2)
TR6 HEADLAMPS CONTROL LEVELING SYSTEM, MANUAL(EXPORT) MAN HDLP CONT SYS(TR6)(EXPORT)
T1C SHIFTER INTERLOCK EUROPEAN THEFT PART LOCK SYSTEM SHIFTER, THEFT PARK LOCK SYSTEM EUROPEAN(T1C)
T2J ORNAMENTATION,INTERIOR,EXPORT UNIQUE REQUIREMENTS(EXPORT) INTR ORNAMENTATION(T2J)(EXPORT)
T43 SPOILER,REAR RR SPLR(T43)
T62 LIGHTING DAYTIME RUNNING ----DELETE T62)
T79 LAMPS,REAR FOG(EXPORT) RR FOG LP(T79)
T84 HEADLAMPS,RH RULE OF THE ROAD,(MARKED E) RH RULE OF ROAD HDLP(T84)
T89 LAMP,TAIL AND STOP(EXPORT) TAIL & S/LP(T89)
T96 LAMP,FRONT FOG(USED WITH TOURING YP6) FRT FOG LP(T96)

NT7 fed emis sys tier 2
U1Q AM/FM stero audio w/cass &cd
W33 Alero GLS model conversion
V73 statement of vehicle cert- U.S.
Y71 parts pkg headliner-sunroof
1SA- GLS pkg-standard equipment 3.4 V6, 4spd automatic transmission
16" polished alloy wheels, p225/50R16 tourng tires, fog lamps, lthr wrap strg whl & shift knob, remote keyless entry, rear decklid spoiler

33U Sandstone paint
8BW computer selected suspension
9BW computer selected suspension
R8C interest protection
Y92 collectors edition pkg: Dark Cherry ext paint collectors edition center cap on special polished wheels polished exhaust tips collectors edition badges on fenders and decklid collectors edition embroidery on front seats and floor mats sequence number badge

523 lt neutral trim combination leather
PDP performance suspension pkg includes P225/50R16 persformance tires, performance suspension
QT3 16x6.5 polished alum wheel
6AU comp selec suspension
7AU as above
8DW as above
9DW as above
77U dark cherry paint
1J3 trim interior design

Here are some of my unlisted ones:
bq2
b9d
flt
ige
j4i
nu4
vg6
vg8
vn9
v2g

Can anybody give me more information on these:

FE2 : SUSPENSION SYSTEM, RIDE HANDLING
1SA : OPTION PACKAGE 01
6DB : SPRING, COMPUTER SELECTED, FRONT, LEFT HAND
7DB : SPRING, COMPUTER SELECTED, FRONT, RIGHT HAND
8BU : COMPUTER SELECTED SUSPENSION