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

Module Power, Ground, Serial Data, and MIL


Object Number: 1553629  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - 5-Volt and Low Reference
Engine Controls Schematic Icons
G104 and G107
B+ Bus - 1 of 2
AUX PWR, AUX PWR 2, DDM, ECC, LBEC 2, LOCKS, PCM B, and PDM Fuses
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
G104 and G107
G102 and G103
Power, Ground, DLC, and Splice Pack SP205
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 1553630  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - Pressure, Temperature, MAF, and VSS
Power, Ground, Serial Data, and MIL
Engine Controls Schematic Icons
Figure 3:

Engine Data Sensors - Pressure, Temperature, MAF, and VSS


Object Number: 1553631  Size: FS
Master Electrical Component List
Air Intake System Description
Control Module References
Engine Data Sensors - Oxygen Sensors
Engine Data Sensors - 5-Volt and Low Reference
Engine Controls Schematic Icons
Pressure Controls, Temperature, and VSS
Pressure Controls, Temperature, and VSS
Driver Information Center
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
Power, Ground, Serial Data, and MIL
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
G102 and G103
Figure 4:

Engine Data Sensors - Oxygen Sensors


Object Number: 1538787  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - Electronic Throttle Control
Engine Data Sensors - Pressure, Temperature, MAF, and VSS
Engine Controls Schematic Icons
Ignition Switch - ACCY/RUN and RUN/START Busses, and IGN B Fuse
G102 and G103
Figure 5:

Engine Data Sensors - Electronic Throttle Control


Object Number: 1538792  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition Controls - Ignition System Coil 1, 3, 5, and 7
Engine Data Sensors - Oxygen Sensors
Engine Controls Schematic Icons
Power, Ground, Serial Data, and MIL
Power, Cruise Control Switch, and Stop Lamp Feed
Stop Lamps - 1 of 2
G104 and G107
Figure 6:

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


Object Number: 1538793  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition Controls - Ignition System Coil 2, 4, 6, and 8
Engine Data Sensors - Electronic Throttle Control
Engine Controls Schematic Icons
Power, Ground, Serial Data, and MIL
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
G102 and G103
Figure 7:

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


Object Number: 1538794  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition Controls - Sensors
Ignition Controls - Ignition System Coil 1, 3, 5, and 7
Engine Controls Schematic Icons
Power, Ground, Serial Data, and MIL
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
G102 and G103
Figure 8:

Ignition Controls - Sensors


Object Number: 1553633  Size: FS
Master Electrical Component List
Knock Sensor (KS) System Description
Control Module References
Fuel Controls - Fuel Pump Controls
Ignition Controls - Ignition System Coil 2, 4, 6, and 8
Engine Controls Schematic Icons
Indicators
Figure 9:

Fuel Controls - Fuel Pump Controls


Object Number: 1553634  Size: FS
Master Electrical Component List
Fuel System Description Pickup and Utility
Control Module References
Fuel Controls - Fuel Injectors
Ignition Controls - Sensors
Engine Controls Schematic Icons
G104 and G107
B+ Bus - 1 of 2
AUX PWR, AUX PWR 2, DDM, ECC, LBEC 2, LOCKS, PCM B, and PDM Fuses
Power, Ground, Serial Data, and MIL
Fuel Gage
G104 and G107
G101 and G110
Figure 10:

Fuel Controls - Fuel Injectors


Object Number: 1538799  Size: FS
Master Electrical Component List
Fuel System Description Pickup and Utility
Control Module References
Fuel Controls - EVAP Controls and Fuel Composition
Fuel Controls - Fuel Pump Controls
Engine Controls Schematic Icons
Power, Ground, Serial Data, and MIL
G102 and G103
Figure 11:

Fuel Controls - EVAP Controls and Fuel Composition


Object Number: 1553635  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Transmission and Controlled/Monitored Subsystem References
Fuel Controls - Fuel Injectors
Engine Controls Schematic Icons
Power, Ground, Serial Data, and MIL
B+ Bus - 1 of 2
IGN 1 Relay Bus - 1 of 2 - ETC/ECM, PCM I, and SBA Fuses - Complete; INJ 1 and INJ 2 Fuses - Except L18
RR WPR, STOP LP, TREC, VEH CHMSL, VEH STOP, and 4WS Fuses
Fuel Gage
G104 and G107
Figure 12:

Transmission and Controlled/Monitored Subsystem References


Object Number: 1553637  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Controls - EVAP Controls and Fuel Composition
Engine Controls Schematic Icons
Starting
Charging (except L18 or NYS)
Gages
Indicators
Fan Controls - Except L18
A/C Compressor Control
A/C Compressor Control
Shift Motor and Encoder Circuits
Power, Ground, Serial Data, and Encoder Motor
Traction Control Switch and Precharge Pump - w/JL4
Power, Ground, Serial Data, and Stop Lamp Switch - w/JL4
Power, Ground, Serial Data, and Wheel Speed Sensors - w/o JL4
Shift Controls and Stop Lamp Switch
Shift Controls and Stop Lamp Switch
Shift Controls and Stop Lamp Switch
Pressure Controls, Temperature, and VSS
Pressure Controls, Temperature, and VSS
Pressure Controls, Temperature, and VSS
PNP Switch, 4WD Signal, Tow/Haul, Serial Data, and Indicator
PNP Switch, 4WD Signal, Tow/Haul, Serial Data, and Indicator
Pressure Controls, Temperature, and VSS
Pressure Controls, Temperature, and VSS