Vehicle Identification (VID) Block
WARNING: This page is about a different car, the 2011 Ford RV Cutaway, 2011 Ford Econoline, 2011 Ford E450 Super Duty, and 2011 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Some PCMs contain a memory area called a Vehicle Identification (VID) block. The PCM VID block commonly stores powertrain configuration items such as Vehicle Identification Number (VIN), tire size, axle ratio, and whether or not the vehicle is equipped with speed control.