GM Service Manual Online
For 1990-2009 cars only
Figure 1:

ECM Power, Ground, Serial Data and MIL


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Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


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Figure 3:

Engine Data Sensors - Pressure, Temperature, MAF, VSS


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Figure 4:

Engine Data Sensors - Oxygen Sensors


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Figure 5:

Engine Data Sensors - Electronic Throttle Controls


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Figure 6:

Ignition Controls - Ignition System Bank 1


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Figure 7:

Ignition Controls - Ignition System Bank 2


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Figure 8:

Ignition Controls - CMP Sensors and Solenoids


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Figure 9:

Crankshaft Position (CKP) Sensor and Knock Sensors


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Figure 10:

Fuel Controls - Injectors and Pump


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Figure 11:

Fuel Controls - EVAP and Fuel Tank Pressure (FTP) Sensor


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Figure 12:

Controlled/Monitored Subsystem References


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