For 1990-2009 cars

The production/process codes provide the description of the Regular Production Options (RPOs) used on the vehicle. The RPO list is printed on the Service Parts Identification Label. The following is a list of the RPO abbreviations and the description of each:

RPO | Description
--- | ---
AF5 | Adjuster Seat Easy Entry Pass
AK5 | Inflatable Front Seat Restraint System
AM9 | Split Back Folding Rear Seats
AN4 | Child Restraint Provisions
AU3 | Power Door Locks
A59 | Compartment Lid Remote Release
B37 | Front and Rear Carpeted Floor Mats
B4M | Vehicle Custom Feature Package
B84 | Body Side Moldings
CD4 | Intermittent Controlled Wipers
C25 | Rear Window Wiper/Washer
C41 | HVAC System Heater Outside Air, with Fan
C49 | Rear Window Defogger
C60 | Air Conditioning with Front Manual Controls
DL5 | Roadside Service Information Decal
DR1 | LH and RH Manual Rearview Mirrors
D42 | Rear Compartmtent Security Cover
D68 | LH and RH Remote Rearview Mirrors
FE9 | Federal Emission Requirements
FX8 | 3.61 Final Drive Ratio
FX9 | 4.39 Final Drive Ratio
FY3 | 3.79 Final Drive Ratio
J41 | Front Disc, Rear Drum Braking System
JM4 | 4-Wheel Anitlock Braking System (ABS)
LP2 | 1.0 Liter, 3-Cylinder Engine
LY8 | 1.3 Liter, 4-Cylinder Engine
MM5 | Merchandised Transmission Manual 5 Speed Provisions
MX1 | Merchandised Transmission Automatic Provisions
M42 | 5-Speed Manual Transmission
M58 | 5-Speed Manual Transmission (3-Cyl only)
M60 | 3-Speed Electronic Automatic Transmission
NB7 | California Emission System TLEV
NC1 | California Emisssion System LEV
NC9 | California Emission System ZEV
NF2 | Federal Emission System, Tier 1
NG1 | MA/NY State Emission Requirements
NB8 | MA/NY State Emission Override
NC7 | Federal Emissions Override
N41 | Power Steering
PB2 | Plastic Wheel Trim Cover, ABS
P08 | LSI Wheel Covers
T61 | Daytime Running Lamps
UM6 | AM/FM Stereo w/ Cassette
UM7 | AM/FM Stereo
UX7 | Dual Front Door Mounted 4 Speaker System, Deluxe Extended Range Package
U1C | AM/FM Stereo w/ Cassette and CD
U16 | Engine Tachometer
U25 | Rear Compartmtent Lamp
VC4 | Price/Fuel Economy Label
VC5 | Shipping Label
VG4 | Undervehicle Protector Compound, Black
VG8 | Notice to Buyer Vehicle Label
VK3 | License Plate Front Mounting Package
V60 | Vehicle Statement Gulf States Organization, Incomplete Vehicle
V73 | Vehicle Statement US/Canada
V78 | Vehicle Statement Delete
V83 | Vehicle Statement ECE Organization
W8X | Radio Provisions Installation
YF5 | California Emission Requirements
ZO5 | Convenience Package
Z41 | Pontiac Canadian Conversion
Z49 | Modified Canadian Export, Mandatory Base Equipment
16U | Bright White
17U | Silvermist Metallic
19U | Black
29U | Blue Green Metallic
35U | Green Metallic
47U | Dark Blue Metallic
52D | Light Neutral Cloth Bucket Seats
52H | Medium Neutral II Cloth Bucket Seats
52I | Light Neutral Interior Trim
53U | Light Toreador Red Metallic
74U | Victory Red (297C)