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

Power, Ground, Serial Data and MIL


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Figure 2:

Engine Data Sensors - 5-Volt and Low References


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Figure 3:

Engine Data Sensors - MAF, MAP and Engine Coolant Temp (ECT) Sensor


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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 - Bank 1 Ignition Coils


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Figure 7:

Ignition Controls - Bank 2 Ignition Coils


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Figure 8:

Ignition Controls - CMP Sensors and Solenoids


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Figure 9:

Ignition Controls - CKP and Knock Sensors


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Figure 10:

Fuel Controls - Fuel Pump and Injectors


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Figure 11:

Fuel Controls - EVAP Controls


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Figure 12:

Controlled/Monitored Subsystem References


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