Most transmission codes are available from the vehicle information code plate located on the cowl (in the engine compartment). The first portion of the code is the transmission designation; following this, there is a blank box. At the right end of the line is the axle or final drive ratio.
On other models, the transmission model and serial number are either stamped on a plate that is bolted to the transmission case or stamped directly on the case itself. The location varies from model-to-model.