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

Module Power, Ground, Serial Data and MIL


Object Number: 857515  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors - Pressure, Temperature and VSS
OBD II Symbol Description Notice
ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays
ECM I Fuse
TURN, SIR and GAUGES Fuses
TURN, SIR and GAUGES Fuses
CRANK and CLSTR Fuses
Indicators
Class 2 Serial Data
G103 and G105 - 2.2L
Valve Controls - 2.2L
Figure 2:

Engine Data Sensors - Pressure, Temperature and VSS


Object Number: 755484  Size: FS
Master Electrical Component List
Air Intake System Description
Oxygen Sensors
Module Power, Ground, Serial Data and MIL
OBD II Symbol Description Notice
Vehicle Speed Sensor - VSS
Brake Switch, VSS Inputs - 2.2L
Figure 3:

Oxygen Sensors


Object Number: 755487  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Ignition Controls
Engine Data Sensors - Pressure, Temperature and VSS
OBD II Symbol Description Notice
Ign RUN and START Bus Bar
G102 - Except Export
Figure 4:

Ignition Controls


Object Number: 755489  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Fuel Injectors and Fuel Pump Controls
Oxygen Sensors
OBD II Symbol Description Notice
ECM I Fuse
Gages
G103 and G105 - 2.2L
Figure 5:

Fuel Injectors and Fuel Pump Controls


Object Number: 857531  Size: FS
Master Electrical Component List
Fuel System Description
Fuel and Evap Controls
Ignition Controls
OBD II Symbol Description Notice
Fuel Level Sensor Signal
ECM I Fuse
ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays
G102 - Except Export
Figure 6:

Fuel and EVAP Controls


Object Number: 857526  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Device Controls
Fuel Injectors and Fuel Pump Controls
OBD II Symbol Description Notice
Ign RUN and START Bus Bar
Figure 7:

Device Controls


Object Number: 755494  Size: FS
Master Electrical Component List
Secondary Air Injection System Description
Controlled Monitored Subsystem References
Fuel and Evap Controls
OBD II Symbol Description Notice
IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays
B+ Bus Bar
Figure 8:

Controlled Monitored Subsystem References


Object Number: 755496  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Transmission Controls - A/T
Device Controls
OBD II Symbol Description Notice
Gages
Compressor Controls - 2.2L
Engine Charging - 2.2L
Speed Sensor Signals
Clutch Pedal Position Switch, Stop Lamp Switch, PCM and Cruise Control Module
Figure 9:

Tansmission Controls - A/T


Object Number: 755500  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled Monitored Subsystem References
OBD II Symbol Description Notice
Switch Inputs and PNP Switch - 2.2L
Valve Controls - 2.2L