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

Power, Ground, MIL and Communication


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Figure 2:

Engine Data Sensors - 5-Volt and Low References


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Figure 3:

Engine Data Sensors - Pressure, Temperature and Electronic Throttle Controls


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Figure 4:

Engine Data Sensors - Oxygen Sensors


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Figure 5:

Engine Data Sensors - Ignition Controls


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Figure 6:

Fuel Controls - Fuel Pump and Injectors


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Figure 7:

Fuel Controls - EVAP Controls


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Figure 8:

Controlled/Monitored Subsystem References


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