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

Module Power, Ground and Serial Data


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Figure 2:

5-Volt and Low Reference


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Figure 3:

Engine Data Sensors - Pressure and Temperature


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Figure 4:

Engine Data Sensors - Heated Oxygen Sensors


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Figure 5:

Engine Data Sensors - Throttle Controls


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Figure 6:

Ignition Controls - Ignition System Coils 1, 3, 5 and 7


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Figure 7:

Ignition Controls - Ignition System Coils 2, 4, 6 and 8


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Figure 8:

Ignition Controls - Sensors


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Figure 9:

Fuel Pump Controls (except LY6)


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Figure 10:

Fuel Pump Controls (LY6)


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Figure 11:

Fuel Controls - Fuel Injectors


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Figure 12:

Fuel Controls - EVAP Controls


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Figure 13:

Controlled/Monitored Subsystem References


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