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

Module Power, Ground, Serial Data, MIL, and DLC


Object Number: 1566449  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
ETC, LH PWR WNDW, OXY SENSOR, PWR SNRF/WPR/SW, REAR WPR, RH PWR WNDW, RR WSH PMP, and SPO OUTPUT Fuses
G105
RUN/CRNK Relay Bus - 1 of 3, AIRBAG, CRUISE/MISC, and TRANS Fuses
RUN/CRNK Relay Bus - 2 of 3, ABS/VSES, A/C CLUTCH, BCK/UP, and IGN1 Fuses
B+ Bus - Underhood Fuse Block - 1 of 2
Data Link Connector (DLC) Schematics
G105
Ignition Switch and BATT IGN SWTCH Fuse
G100, G102, G103, G104, G110, and G120
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 1566451  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - Pressure, Temperature, and Throttle Actuator Controls
Module Power, Ground, Serial Data, MIL, and DLC
Engine Controls Schematic Icons
Figure 3:

Engine Data Sensors - Pressure, Temperature, and Throttle Actuator Controls


Object Number: 1566453  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Engine Data Sensors - 5-Volt and Low Reference
Engine Data Sensors - Oxygen Sensors
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, MIL, and DLC
TCC Brake/Cruise Release Switch and Vehicle Speed Sensor
Manual Transmission Schematics
RUN/CRNK Relay Bus - 3 of 3, ENG CNTRL SYS, INJ, and PCM-I Fuses
G100, G102, G103, G104, G110, and G120
Figure 4:

Engine Data Sensors - Oxygen Sensors


Object Number: 1566454  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Controls - Sensors
Engine Data Sensors - Pressure, Temperature, and Throttle Actuator Controls
Engine Controls Schematic Icons
B+ Bus - Underhood Fuse Block - 1 of 2
Figure 5:

Ignition Controls - Ignition System


Object Number: 1566456  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Controls
Ignition Controls - Sensors
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, MIL, and DLC
RUN/CRNK Relay Bus - 2 of 3, ABS/VSES, A/C CLUTCH, BCK/UP, and IGN1 Fuses
G100, G102, G103, G104, G110, and G120
Figure 6:

Ignition Controls - Sensors


Object Number: 1566455  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Ignition Controls - Ignition System
Engine Data Sensors - Oxygen Sensors
Engine Controls Schematic Icons
Engine Controls Schematic Icons
Engine Controls Schematic Icons
Figure 7:

Fuel Controls


Object Number: 1566457  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel Injection Controls
Ignition Controls - Ignition System
Engine Controls Schematic Icons
B+ Bus - Underhood Fuse Block - 2 of 2
G105
Gages
G105
G420
Figure 8:

Fuel Injection Controls


Object Number: 1566503  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel and EVAP Controls
Fuel Controls
Engine Controls Schematic Icons
Module Power, Ground, Serial Data, MIL, and DLC
Figure 9:

Fuel and EVAP Controls


Object Number: 1566505  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Controlled/Monitored Subsystem and Transmission References
Fuel Injection Controls
Engine Controls Schematic Icons
B+ Bus - Underhood Fuse Block - 1 of 2
Module Power, Ground, Serial Data, MIL, and DLC
Gages
Figure 10:

Controlled/Monitored Subsystem and Transmission References


Object Number: 1566510  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Fuel and EVAP Controls
Engine Controls Schematic Icons
Gages
Power, Ground, and Electronic Brake Control Module (EBCM)
Starting System - MA5
Starting System - M30
Charging System
Compressor COntrols
Cruise Control Schematics
Indicators
Center High Mount Stop Lamps (CHMSL) and Stop Lamp Switch
Power, Ground, Serial Data, Indicator, VSS and Encoder Motor
Switches
Transmission Controls