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

Module Power, Ground, and MIL


Object Number: 1923361  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
5-Volt Reference
Figure 2:

5-Volt Reference


Object Number: 1923363  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Low Reference
Module Power, Ground and MIL
Figure 3:

Low Reference


Object Number: 1923366  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
MAF, MAP, ECT
5-Volt Reference
Figure 4:

MAF, MAP, ECT


Object Number: 1923369  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Oxygen Sensors
Low Reference
Figure 5:

Oxygen Sensors


Object Number: 1923371  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
TAC, Accelerator Pedal Sensor
MAF, MAP, ECT
Figure 6:

TAC, Accelerator Pedal Sensor


Object Number: 1923377  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Ignition Control Module
Oxygen Sensors
Figure 7:

Ignition Control Module


Object Number: 1923381  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Knock, Camshaft and Crankshaft Sensors
TAC, Accelerator Pedal Sensor
Figure 8:

Knock, Camshaft, and Crankshaft Sensors


Object Number: 1923383  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Injectors and Fuel Pump
Ignition Control Module
Figure 9:

Fuel Injectors and Fuel Pump


Object Number: 1923387  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
EGR and EVAP Controls
Knock, Camshaft and Crankshaft Sensors
Figure 10:

EGR and EVAP Controls


Object Number: 1923393  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Injectors and Fuel Pump
Figure 11:

Controlled/Monitored Subsystem References


Object Number: 1923396  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
EGR and EVAP Controls