Circuit Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
When ignition is turned on, SDM compares restraints identification stored in SDM to restraints identification stored in Body Control Module (BCM). SDM then compares Vehicle Identification Number (VIN) stored in SDM to VIN stored in Powertrain Control Module (PCM).