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

Module Power, Ground, Serial Data, and MIL


Object Number: 789734  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors-5-Volt and Low Reference
OBD II Symbol Description Notice
Power Distribution Schematics (IGN 1)
Power Distribution Schematics (IGN 1)
Cluster, BCM, PCM, BTSI
Fuse Block Underhood Power Bussing (Page 1 of 2)
PCM, BCM, Cluster, Turn, SDM
G100, G111, and G113
Data Link Connector (DLC)
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 789735  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors-Pressure and Temperature
Module Power, Ground, Serical Data, and MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors - Pressure and Temperature


Object Number: 789736  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Controls 3.1L (Engine Data Sensors)
Engine Data Sensors-5-Volt and Low Reference
OBD II Symbol Description Notice
Figure 4:

Engine Data Sensors - MAF, VSS


Object Number: 789737  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Oxygen Sensors
Engine Data Sensors-Pressure and Temperature
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
Stop, EVAP, MAF
G100, G111, and G113
G100, G111, and G113
Gauges
Fluid Pressure Manual Valve Position Switch and ISS Sensor
Engine Controls Schematic Icons
Figure 5:

Oxygen Sensors


Object Number: 789738  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Ignition Controls
Engine Controls 3.1L (Engine Data Sensors)
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
G100, G111, and G113
G113
Figure 6:

Ignition Controls


Object Number: 789739  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Fuel Pump Controls
Oxygen Sensors
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
Engine Controls Schematic Icons
G100, G111, and G113
Figure 7:

Fuel Pump Controls


Object Number: 789740  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Injectors
Ignition Controls
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
G100, G111, and G113
G402 (Page 1 of 2)
Gauges
G100, G111, and G113
Figure 8:

Fuel Injectors


Object Number: 789741  Size: FS
Master Electrical Component List
Fuel System Description
EVAP Controls and FTP Sensor
Fuel Pump Controls
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
Figure 9:

EVAP Controls and FTP Sensor


Object Number: 789742  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
AIR, EGR, and IAC Controls
Fuel Injectors
OBD II Symbol Description Notice
Fuse Block Underhood Power Bussing (Page 1 of 2)
Stop, EVAP, MAF
Gauges
Compressor Controls
Engine Electrical System - Starting System LG5
Figure 10:

AIR, EGR, and IAC Controls


Object Number: 789743  Size: FS
Master Electrical Component List
Exhaust Gas Recirculation (EGR) System Description
PCM References-Controlled/Monitored Subsystem
EVAP Controls and FTP Sensor
OBD II Symbol Description Notice
Figure 11:

PCM References - Controlled/Monitored Subsystem


Object Number: 789744  Size: FS
Master Electrical Component List
Powertrain Control Module Description
PCM References-Transmission Controls
AIR, EGR, and IAC Controls
OBD II Symbol Description Notice
Compressor Controls
Compressor Controls
Compressor Controls
Compressor Controls
Compressor Controls
Cooling Fans
Charging
Stop Lamp and Torque Signals
Low Oil Pressure and Low Oil Indicators
Cruise Control
Starting
Figure 12:

PCM References - Transmission Controls


Object Number: 789745  Size: FS
Master Electrical Component List
Powertrain Control Module Description
PCM References-Controlled/Monitored Subsystem
OBD II Symbol Description Notice
Solenoid Controls and TFT Sensor
Fluid Pressure Manual Valve Position Switch and ISS Sensor
PNP Switch
Fluid Pressure Manual Valve Position Switch and ISS Sensor