WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Scan Tool Data List - Body Control Module (BCM)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Scan Tool Data List - Powertrain Control Module (PCM)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Scan Tool Data List - Vehicle Theft Deterrent