WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Power Control Module Connector C1 Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Powertrain Control Module Connector C2 Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Powertrain Control Module Connector C3 Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Powertrain Control Module Connector C4 Terminals