Vehicle Identification (VID) Block
WARNING: This page is about a different car, the 2005 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Some powertrain control modules (PCMs) contain a memory called a VID block. The PCM VID block may contain the factory settings for configurable modules unless the PCM is flashed with a new calibration, in which case some PCM parameters may be modified.