How do you find out which trans you have?

How do you find out which trans you have?
Depending on what kind of vehicle it is, There may be a number stamped into the transmission pan. There should also be a tag or sticker somewhere on the transmission that will tell you. This always doesn't apply, if you live in an area where they lots of salt in the winter and the vehicle is 10 years old, it may no longer exist.What you may be able to do is call the dealer with your VIN number and ask them. Your VIN number can be easily found on the registration on your windshield or there is a plate with the VIN on the drivers side of the vehicle at the bottom of the windshield.