WARNING: This page is about a different car, the 2005 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power, Ground, MIL and DLC Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: Engine Data Sensors Schematic (5-Volt and Low Reference Bussing)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Engine Data Sensors Schematic (Pressure and Temperature)
Courtesy of GENERAL MOTORS CORP.
Fig 4: Engine Data Sensors Schematic (MAF/IAT, CKP, KS, and CMP)
Courtesy of GENERAL MOTORS CORP.
Fig 5: Engine Data Sensors Schematic (HO2S)
Courtesy of GENERAL MOTORS CORP.
Fig 6: Engine Data Sensors Schematic (APP and TAC)
Courtesy of GENERAL MOTORS CORP.
Fig 7: Ignition Controls Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Controls Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 9: Engine Data Sensors Schematic (EVAP, After Cooler Pump and Supercharger By-Pass Valve Solenoid)