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

Power, Ground, Serial Data, and MIL


Object Number: 1217732  Size: FS
Master Electrical Component List
Powertrain Control Module Description
5-Volt and Low Reference Bussing
Engine Controls Schematic Icons
Fuse Block Underhood Bussing
Fuse Block Underhood Bussing
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
Fuse Block - Underhood - EMISSION 1, ETC Fuses, and A/C Clutch, P0WERTRAIN Relays
G109
G109
Power, Ground and High Speed Serial Data
G103, G104, and G105
Figure 2:

5-Volt and Low Reference Bussing


Object Number: 1217736  Size: FS
Master Electrical Component List
Powertrain Control Module Description
ECT, MAF/IAT and MAP Sensors
Power, Ground, Serial Data, and MIL
Engine Controls Schematic Icons
Figure 3:

ECT, MAF/IAT, and MAP Sensors


Object Number: 1217739  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Heated Oxygen Sensors
5-Volt and Low Reference Bussing
Engine Controls Schematic Icons
Fuse Block - Underhood - EMISSION 1, ETC Fuses, and A/C Clutch, P0WERTRAIN Relays
Fuse Block - Underhood - EMISSION 1, ETC Fuses, and A/C Clutch, P0WERTRAIN Relays
Transmission Solenoids and VSS
G103, G104, and G105
Figure 4:

Heated Oxygen Sensors


Object Number: 1217742  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Electronic Throttle Controls
ECT, MAF/IAT and MAP Sensors
Engine Controls Schematic Icons
Fuse Block Underhood Bussing
Fuse Block - Underhood - EMISSION 1, ETC Fuses, and A/C Clutch, P0WERTRAIN Relays
Figure 5:

Electronic Throttle Controls


Object Number: 1217744  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Ignition Control Module
Heated Oxygen Sensors
Engine Controls Schematic Icons
Figure 6:

Ignition Control Module


Object Number: 1217746  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Fuel Pump Controls
Electronic Throttle Controls
Engine Controls Schematic Icons
Fuse Block Underhood Bussing
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
Engine Controls Schematic Icons
Engine Controls Schematic Icons
G106
Figure 7:

Fuel Pump Controls


Object Number: 1217747  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Injectors, EVAP, and Fuel Tank Pressure Sensor
Ignition Control Module
Engine Controls Schematic Icons
DRV ST, EMISSION 2, FUEL, PARK LPS, RBEC 2, RUN RLY, TRUNK Fuses, and FUEL, PARK LPS, TRUNK Relays, BCM - HVAC BLOWER, HVAC HEAD ECC Fuses
DRV ST, EMISSION 2, FUEL, PARK LPS, RBEC 2, RUN RLY, TRUNK Fuses, and FUEL, PARK LPS, TRUNK Relays, BCM - HVAC BLOWER, HVAC HEAD ECC Fuses
G302
Indicators
G302
G301
Figure 8:

Fuel Injectors, EVAP, and Fuel Tank Pressure Sensor


Object Number: 1217749  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Controlled/Monitored Subsystem References
Fuel Pump Controls
Engine Controls Schematic Icons
Fuse Block Underhood Bussing
Fuse Block Underhood Bussing
DRV ST, EMISSION 2, FUEL, PARK LPS, RBEC 2, RUN RLY, TRUNK Fuses, and FUEL, PARK LPS, TRUNK Relays, BCM - HVAC BLOWER, HVAC HEAD ECC Fuses
Fuse Block - Underhood - ABS, IGN, INJ, PCM IGN, TRANS Fuses and RUN/CRANK Relay
Fuse Block - Underhood - EMISSION 1, ETC Fuses, and A/C Clutch, P0WERTRAIN Relays
DRV ST, EMISSION 2, FUEL, PARK LPS, RBEC 2, RUN RLY, TRUNK Fuses, and FUEL, PARK LPS, TRUNK Relays, BCM - HVAC BLOWER, HVAC HEAD ECC Fuses
Figure 9:

Controlled/Monitored Subsystem References


Object Number: 1217750  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Automatic Transmission Control References
Fuel Injectors, EVAP, and Fuel Tank Pressure Sensor
Engine Controls Schematic Icons
Power, Ground, A/C Compressor Clutch, and Blower Motor Controls
Power, Ground, A/C Compressor, Clutch, and Blower Motor Controls
Starting
Charging
Indicators
Engine Cooling Fans
Figure 10:

Automatic Transmission Controls References


Object Number: 1217752  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
Engine Controls Schematic Icons
Transmission Solenoids and VSS
Transmission Switches, TFT and A/T ISS Sensor
Tap Up/Tap Down Switch
Transmission Switches, TFT and A/T ISS Sensor
Park/Neutral Position Switch