Here are the RPO codes for the 2006 C6. It looks like the chrome wheels were QX3. Look on the sticker in your glove compartment that has all the RPO codes of what was built into your car to see what it came with from the factory.
Bob
AAB
Memory - Driver Convenience Package
AG2
Adjuster Pass ST - Power, Multi-Directional
AJ7
Restraint System - Seat, Inflatable, Driver & Pass, FRT & Side
AK5
Restraint System - Seat, Inflatable, Driver & Pass
AQ9
Seat - FRT BKT, Luxury
AR9
Seat - FRT BKT, Deluxe
AU5
Lock Control, Entry - Remote Entry, Low Power
AU8
Lock Control, Entry - Remote Entry, Specific Frequency
AX4
Restraint Conversion - Seat, Man, European
BAG
Parts PKG - Export
BGR
Plant Code - Bowling Green, KY, USA
BV7
Bumper Provisions - FRT & RR, Canadian Requirements
B4H
Modification - Noise Control, Export
B4P
Modification - Noise Control, Transmission Control Module
CC3
Roof - Hatch, Removable Panels, Plastic
CE4
Washer - Headlamp, High Pressure
CF7
Roof - Sun, Removable, Non-Transparent
CJ2
HVAC System - Air Conditioner FRT, Auto Temp Cont, AUX Temp Cont
CM7
Roof - Convertible, Folding, Power
C2L
Roof - Package, Dual Removable
DD0
Mirror O/S - LH & RH, Remote Control, Electric, Heated, LT Sensitive
DD8
Mirror I/S R/V - LT Sensitive
DL5
Decal - Roadside Service Information
DL8
Mirror O/S - LH & RH, Remote Control, Electric, Heated
D42
Shade - RR Compt
EXP
Export
FE1
Suspension System - Soft Ride
FE2
Suspension System - Ride, Handling
FE3
Suspension System - Sport
FE4
Suspension System - Special Ride & Handling
FE9
Certification - Emission, Federal
F55
Chassis - Continuously Variable Real Time Damping Magnetorheological
GB9
Label, Limited - Consignment - Delete
GM8
Axle Rear - 2.56 Ratio
GU6
Axle Rear - 3.42 Ratio
JAF
Brake Provisions - Europe
JL5
Control - Manual Trans, First To Fourth Gear Skip Shift
JL9
Brake System - PWR, FRT & RR Disc, Antilock, FRT & RR WHL
J55
Brake System - Heavy Duty
J56
Brake System - PWR, FRT & RR Disc, Antilock, FRT & RR WHL, Heavy Duty
KNR
Cooling System - Axle
KNP
Cooling System - Trans, HD
KPS
Cooler - Oil, Engine
KA1
Heater - Seat, FRT
KJ5
Protector - Shipping, Shock Absorber
K05
Heater Eng - Block
K63
Generator - 110 AMP
LS2
Engine - Gas, 8 Cyl, 6.0L, SFI, Alum, GM
LS7
Engine - Gas, 8 Cyl, 7.0L, SFI, Alum, GM
MAE
Marketing Area - Europe
MYC
Transmission - Auto 6 Spd, HMD, 6L80
MM6
Transmission - Man 6 Spd, Tremec, 85mm, 2.66 1st, 0.50 6th, O/D
MN6
Merchandised Trans - Man 6 Spd Provisions
MX0
Merchandised Trans - Auto Provisions, O/D
MZ6
Transmission - Man 6 Spd, Tremec, 85mm, 2.97 1st, 0.57 6th, O/D
NA3
Emission System - Japan
NE1
Certification - Emission, Geographically Restricted Registration for Vehicles up to 14,000 lbs GVW (use 2003 mdl yr)
NF9
Emission System - General, OBD MIL Suppression
NK4
Steering Wheel - Sport Leather
NP7
Steering Column - EEC Approved
NT4
Emission System - EEC 05
NT9
Emission System - Federal, Tier 2 Phase-Out
NU4
Emission System - California LEV2 Plus
N33
Steering Column - Tilt Type
N37
Steering Column - Tilt, Telescoping
QL9
Wheel - 18 X 9.5 FRT & 19 X 12 RR, Polished
QG6
Wheel - 18 X 8.5 FRT & 19 X 10 RR, Aluminum, Styled
QG7
Wheel - 18 X 8.5 FRT & 19 X 10 RR, Polished
QX1
Wheel - 18 X 18.5 FRT & 19 X 10 RR, Aluminum, Painted, Flangless
QX3
Wheel - 18 X 8.5 FRT & 19 X 10 RR, Chrome, Flangless
Q10
Wheel - 18 X 9.5 FRT & 19 X 12 RR
SSG
Graphic - Switch Function Symbol
T62
Lamp System - Daytime Running - Delete
T79
Lamp - Fog, RR
T84
Headlamps - RH Rule of The Road, E Mark
T85
Headlamps - LH Rule of The Road, E Mark
T90
Lamp - Signaling & Marker, Export
UA2
Theft Deterrent Sys - Export Specific
UD4
Alarm - Vehicle Speed, 120 k/h
UE1
Communication System - Vehicle, G.P.S. 1
UH3
Indicator - Low Tire Press, VAR 2
UG1
Opener - Garage Door, Universal
UJ6
Indicator - Low Tire Press
UJ9
Indicator - Low Tire Press, VAR 2
UK1
Frequencies - Japanese
UL2
Frequencies - European
US3
Antenna - Diversity
US8
Radio - AM/FM Stereo, SEEK/SCAN, CD, Auto Tone, Clock, ETR, MP3, RDS
US9
Radio - AM/FM Stereo, SEEK/SCAN, RDS, Multiple Compact Disc, Auto Tone Control, Clock, ETR, MP3
UV6
Display - Head Up
U2K
Digital Audio System - S - Band
U3U
Radio - AM/FM Stereo, SEEK/SCAN, DVD, CD, Clock, ETR, Navigation, Voice Rec, MP3
U3Z
Radio - AM/FM Stereo, SEEK/SCAN, DVD, CD, Clock, ETR, Navigation, Voice Rec, MP3, VICS
U19
Speedometer - Inst, Kilo & Miles, Kilo Odometer
U52
Cluster - Inst, Electronic
U65
Speaker System - 7, Custom
U66
Speaker System - 7, Custom
VBX
Language Label - Arabic
VDD
Vehicle Information - DVD, Customer Orientation
VA5
Language Label - English
VB1
Label - Shipping, Japan
VC4
Label - Price/Fuel Econ, Puerto Rico & Virgin Islands
VC5
Label - Shipping, Except US, US Possessions, or Japan
VD4
Provision Options - Poor Fuel Quality Characteristics
VH5
Plate - Vehicle Identification
VJ4
Label, Export - Child Seat Location
VK3
License Plate Front - FRT Mounting PKG
VL4
License Plate Front - FRT Mounting PKG, EEC
VL6
License Plate Front - FRT Mounting PKG, Japanese
VZ3
Label - Mercury Disposal Notification
V73
Vehicle Statement - USA/Canada
V76
Hook - Tow
V78
Vehicle Statement - Delete
V87
Vehicle Statement - Gulf States Organization
W11
Navigation Disc Data - Nav Data 1
W12
Navigation Disc Data - Nav Data 2
XFA
Tire Front - P275/35ZR1 8 BW TL HW4 EMT
XFV
Tire Front - P245/40ZR1 8-88Y BW HW4 (EMT)
XGN
Tire Front - P245/40ZR1 8-88Y BW HW4 (EMT) HI - Performance
YFJ
Tire Rear - P325/30ZR1 9 BW TL HW4 (EMT)
YFX
Tire Rear - P285/35ZR1 9-90Y BW HW4 (EMT)
YGJ
Tire Rear - P285/35ZR1 9-90Y BW HW4 (EMT) HI - Performance
YF5
Certification - Emission, California
Z5X
Mirror Provision - Arabic Language
Z49
Export - Canadian Modify Mandator Y base Equip
Z51
Performance Package - Handling
1SE
Package - LZ Option 05
1LZ
Package - LZ Option 1
2LZ
Package - LZ Option 2
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