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Cadillac VIN Decoder
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The 17 digit VIN Number on Cadillac models can be found on the passenger side front lower windscreen.
         
VIN 1 G 6 K D 2 4 U 9 5 5 5 1 1 3 5 6
Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Cadillac - Position 1-2-3 World Manufacturer Identifier
Position 1-2-3, e.g. value = "1G6"
Position 4 and 5 - Cadillac Model
Position 4 & 5 e.g.  value = "DA" Cadillac CTS
Position 8 - Cadillac Engine
Position 8 e.g.  value = "D" 3.6 L V6
Position 9 - Cadillac Check Digit
VIN - Check Digit
Position 10 - Cadillac Model Year     VIN Year Codes
Position 11 Cadillac Assembly Plant, e.g. 4 = Orion
Position 12-13-14-15-16-17 - Cadillac Vehicle Serial Number