WARNING: This page is about a different car, the 2009 GMC Canyon and 2009 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Module Power, Ground, Serial Data, and MIL
Courtesy of GENERAL MOTORS CORP.
Fig 2: Engine Data Sensors - 5-Volt and Low Reference
Courtesy of GENERAL MOTORS CORP.
Fig 3: Engine Data Sensors - Pressure and Temperature
Courtesy of GENERAL MOTORS CORP.
Fig 4: Engine Data Sensors - Heated Oxygen Sensors
Courtesy of GENERAL MOTORS CORP.
Fig 5: Engine Data Sensors - Throttle Controls
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Fig 6: Ignition Controls - Ignition System Coils
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Fig 7: Ignition Controls - Sensors
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Fig 8: Fuel Controls - Fuel Injectors
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Fig 9: Fuel Controls - Fuel Pump and EVAP Controls
Courtesy of GENERAL MOTORS CORP.
Fig 10: Fuel Controls - Fuel Pump Controls
Courtesy of GENERAL MOTORS CORP.
Fig 11: Device Controls - Secondary Air Injection K18