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

Module 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 - MAF, Pressure and Temperature


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Figure 4:

Engine Data Sensors - Oxygen Sensors


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Figure 5:

Engine Data Sensors - Electronic Throttle Control


Object Number: 2081682  Size: FS
Figure 6:

Ignition Controls - Ignition Coils 1, 3, and 5


Object Number: 2081685  Size: FS
Figure 7:

Ignition Controls - Ignition Coils 2, 4, and 6


Object Number: 2081689  Size: FS
Figure 8:

Ignition Controls - Sensors


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Figure 9:

Fuel Controls - Fuel Pump and Fuel Injectors


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Figure 10:

Fuel Controls - EVAP Controls


Object Number: 2081703  Size: FS
Figure 11:

Device Controls - K18


Object Number: 2081707  Size: FS
Figure 12:

Controlled/Monitored Subsystem References


Object Number: 2081711  Size: FS