1. 1973 VIN Plate is located on the left hand top of the instrument panel, which is visible through the windshield.
EXAMPLE VIN NUMBER: 2D37Y3P100001
VIN NUMBER BREAKDOWN:
2=Division(Pontiac)
D=Series Number
37=Body Style Code Number(Hardtop,2-door)
Y=Engine Code
3=Year(1973)
P=Assembly Plant
100001=Serial Numbers
Since there is no designator for the GTO option in the VIN, one way to verify that you have a GTO is check the factory build sheet, it will show option code RPO 341 for the GTO option if it is installed.
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2. 1973 Data Plate or Body Tag is located on the left hand top of the cowl, near the hood hinge.
EXAMPLE DATA PLATE:
BODY BY FISHER
ST 73-2AD37
P 123456
BDY
TR 296
A51
74 74 PNT
09D
GENERAL MOTORS CORPORATION
CERTIFIES TO THE DEALER THAT
THIS VEHICLE CONFORMS TO ALL
FEDERAL MOTOR VEHICLE SAFETY STANDARDS
APPLICABLE AT TIME OF MANUFACTURE
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DATA PLATE BREAKDOWN:
ST=Model Year(73)-Car Division(2=Pontiac)-Series(AD=Le Mans)-Body Style(37=Hardtop,2-door)
P=Assembly Plant(P=Pontiac)
BDY=Body Number(123456)
TR=Trim Combination Number(296=Black Interior)
A51=Seat Type(Bucket)
PNT=Lower and Upper Body Colors(74=Florentine Red)
09D=Build Code Date(September,4th week)
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Body Style Number
Engine Codes
- T=400-4 barrel 230hp
- Y=455-4 barrel 250hp
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Series Number
- D=Le Mans
- F=Le Mans Sport
Build Sheet Sales Code
(341=GTO Option)
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Trim Codes
- 251=Blue-Standard Morrokide Bench Seat
- 252=White-Standard Morrokide Bench Seat
- 253=Saddle-Standard Morrokide Bench Seat
- 256=Black-Standard Morrokide Bench Seat
- 257=Burgundy-Standard Morrokide Bench Seat
- 251=Blue-Optional Morrokide Bucket Seat
- 252=White-Optional Morrokide Bucket Seat
- 253=Saddle-Optional Morrokide Bucket Seat
- 256=Black-Optional Morrokide Bucket Seat
- 257=Burgundy-Optional Morrokide Bucket Seat
- 258=Chamois-Optional Morrokide Bucket Seat
- 264=Green-Standard Cloth and Vinyl Bench Seat
- 265=Beige-Standard Cloth and Vinyl Bench Seat
- 271=Blue-Optional Morrokide Bench Seat
- 272=White-Optional Morrokide Bench Seat
- 273=Saddle-Optional Morrokide Bench Seat
- 276=Black-Optional Morrokide Bench Seat
- 281=Blue
- 284=Green
- 285=Beige
- 286=Black
- 287=Burgundy
- 292=White
- 293=Saddle
- 296=Black
- 297=Burgundy
- 298=Chamois
- Seat Type Code
- A51=Bucket
- A52=Bench
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Assembly Plants
1973 VIN Codes
- A=Atlanta,GA
- G=Framingham,MA
- P=Pontiac,MI
- Z=Fremont,CA
- 1=Oshawa,Canada
1973 Data Plate Codes
- A=Atlanta,GA
- G=Framingham,MA
- P=Pontiac,MI
- Z=Fremont,CA
- 1=Oshawa,Canada
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Paint Codes/Body Color
- 11=Cameo White
- 19=Starlight Black
- 24=Porcelain Blue Metallic
- 26=Regatta Blue Metallic
- 29=Admiralty Blue Metallic
- 42=Verdant Green Metallic
- 44=Slate Green Metallic
- 46=Golden Olive Metallic
- 48=Brewster Green
- 51=Sunlight Yellow
- 56=Desert Sand
- 60=Valencia Gold Metallic
- 66=Burnished Umber
- 68=Burma Brown Metallic
- 74=Florentine Red Metallic
- 75=Buccaneer Red
- 81=Mesa Tan
- 97=Navajo Orange Metallic
Vinyl Top
- 1=White>
- 2=Black
- 3=Beige
- 4=Chamois
- 6=Dark Burgundy
- 7=Blue
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Engine Identification: Identify the engine installed by the two letter engine code stamped
on the front of the block, on the surface below the right cylinder head.
| 1973 GTO Engine Letter Code |
Cubic Inch Displacement |
Horsepower |
Transmission |
| WK |
400 |
230 |
Man |
| WP |
400 |
230 |
Man |
| WS |
400 |
230 |
Man |
| X5 |
400 |
230 |
Auto |
| X7 |
455 |
250 |
Auto |
| XE |
455 |
250 |
Auto |
| XK |
400 |
230 |
Auto |
| XL |
455 |
250 |
Auto |
| XM |
455 |
250 |
Auto |
| XN |
400 |
230 |
Auto |
| XX |
400 |
230 |
Auto |
| Y3 |
400 |
230 |
Auto |
| Y6 |
400 |
230 |
Man |
| YA |
455 |
250 |
Auto |
| YC |
455 |
250 |
Auto |
| YD |
455 |
250 |
Auto |
| YF |
400 |
230 |
Man |
| YG |
400 |
230 |
Man |
| YK |
455 |
250 |
Auto |
| YS |
400 |
230 |
Auto |
| YT |
400 |
230 |
Auto |
| YY |
400 |
230 |
Auto |
| ZA |
455 |
250 |
Auto |
| ZC |
455 |
250 |
Auto |
| ZS |
400 |
230 |
Auto |
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GTO VIN 64
