The seventh position of the vehicle VIN number represents the installed transmission type and body type. This single digit represents the body (or platform) type, and transmission type installed for each particular model year. Sometimes this code will remain the same from one year to another and from one model to another although the installed transmission type could be different. Although the code describes which transmission type is installed as original equipment for a particular model year, this code is not a portion of the four-character transmission type and serial number stamped on the transmission casing.
The transmission type and serial numbers are stamped into the transmission casing facing up and near the starter motor assembly. The transmission type is a four-character code, which is followed by and separated from the transmission serial number by a hyphen. This code is used the by the manufacturer to designate the transmission type and the transmission specifications may vary from transmission to transmission.