WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: PCM Power, Ground, MIL, And Serial Data Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 2: 5 Volt And Low Reference Bussing Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 3: BARO, MAP, ECT, And IAT/MAF Sensors Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 4: IAT/MAF Sensor, Super Charger Boost Control Solenoid, And A/T Controls VSS References Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 5: Heated Oxygen Sensors Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 6: Electronic Throttle Controls Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 7: Ignition Control Module Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Pump Controls Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 9: Fuel Injectors Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 10: EVAP Solenoids, FTP Sensor, And EGR Valve Schematics