Need to know trans type aan or van? vin is Y. on 2001 Cadillac Seville SLS

This car had 2 types of transmissions with a VIN of 'y', EITHER AAN OR VAN. Where can I find this information so that I purchase the correct transmission. The transmission is in the car.

by in Maywood, IL on January 04, 2012
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1 answer
ANSWER by , January 04, 2012
The parts department of a Cadillac dealer should be able to tell you if you give them the complete VIN number.