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AUTOMATIC TRANSMISSION IDENTIFICATION
 
 

CADILLAC
 

Dual Coupling Hydra-Matic
1962
Code Prefix
1963
Code Prefix
All
Exc. Series 75-green plate
 C All
Exc. Series 75-black plate
 C
Series 75
orange plate
 CA Series 75
orange plate
 CA
1964
    
All
Exc. Series 75-red plate
 C    
Series 75
blue plate
 CA    

GM Turbo Hydra-Matic /375 /400
1964
1965-67
Series
60, 63, Convertible
 CD 75
Sedan, Limousine
 AC
1968-69
 Commercial chassis AB
75
and Commercial chassis
 AB All others AA
All others AA  
   
1970-74
  All AA

GM Turbo Hydra-Matic Front Wheel Drive
1965-74
Stamped on ID plate with year and serial #
Eldorado AJ    
 
 
The transmission code decoder reveals the transmission type, engine displacement, plate location and configuration.