Diagnostic Aids
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1001 is an indication that restraints identification stored in BCM and SDM DO NOT match or that VIN stored in BCM and SDM DO NOT match. If BCM and/or Powertrain Control Module (PCM) were replaced, reprogramming may be necessary.