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

Module Power, Ground, Serial Data and MIL
Object Number: 2075770 Size: FS
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference
Object Number: 2075772 Size: FS
Figure 3:

Engine Data Sensors - Pressure and Temperature
Object Number: 2075774 Size: FS
Figure 4:

Engine Data Sensors - Oxygen Sensors
Object Number: 2075776 Size: FS
Figure 5:

Engine Data Sensors - Throttle Controls
Object Number: 2075778 Size: FS
Figure 6:

Ignition Controls - Ignition System Coils - 1, 3, 5, and 7
Object Number: 2075780 Size: FS
Figure 7:

Ignition Controls - Ignition System Coils - 2, 4, 6, and 8
Object Number: 2075782 Size: FS
Figure 8:

Ignition Controls - Sensors and Active Fuel Management (AFM) Controls
Object Number: 2075784 Size: FS
Figure 9:

Fuel Pump Flow Control Module
Object Number: 2075786 Size: FS
Figure 10:

Fuel Controls - Fuel Injectors
Object Number: 2075788 Size: FS
Figure 11:

Fuel Controls - EVAP Controls
Object Number: 2075790 Size: FS
Figure 12:

Controlled/Monitored Subsystem References
Object Number: 2075792 Size: FS