WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Data Link, Grounds, MIL, and Power Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: 5 Volt and Low Reference Bussing Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 3: ECT, IAT, MAP, and TP Sensors Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 4: MAF and VSS Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 5: HO2S Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 6: Ignition Control Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 7: Fuel Pump Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Injectors Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 9: Boost Control Solenoid, EVAP, and FTP Schematic