WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Camshaft Position Sensor Connector Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Central Sequential Fuel Injection Connector Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Crankshaft Position Sensor Connector Terminals
Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Engine Coolant Temperature Sensor Connector Terminals