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

DLC, Ground, MIL and Power


Object Number: 1615865  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
5 Volt and Low References
Engine Controls Schematic Icons
Underhood Fuse Block - B+
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Underhood Fuse Block IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Underhood Fuse Block IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
Underhood Fuse Block IBCM 1, Body Control Module (BCM), AIRBAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR and RADIO Fuses
G103, G104 and G105
Power, Ground, Serial Data, High Speed GMLAN
G109
Figure 2:

5-Volt and Low References


Object Number: 1615868  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
ECT, MAF and MAP Sensors
DLC, Ground, MIL and Power
Engine Controls Schematic Icons
Figure 3:

ECT, MAF and MAP Sensors


Object Number: 1615870  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Heated Oxygen Sensors
5 Volt and Low References
Engine Controls Schematic Icons
Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses
DLC, Ground, MIL and Power
G103, G104 and G105
Figure 4:

Heated Oxygen Sensors


Object Number: 1615873  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Electronic Throttle Controls
ECT, MAF and MAP Sensors
Engine Controls Schematic Icons
DLC, Ground, MIL and Power
Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses
Figure 5:

Electronic Throttle Controls


Object Number: 1615876  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition System
Heated Oxygen Sensors
Engine Controls Schematic Icons
Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses
DLC, Ground, MIL and Power
Turn Signals and Stop Lamps
Brake Pedal Position Sensor, Clutch Pedal Position (CPP) Switch, and Stop Lamp Switch Signal
G103, G104 and G105
Figure 6:

Ignition System


Object Number: 1615877  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Fuel Injectors and Fuel Pump
Electronic Throttle Controls
Engine Controls Schematic Icons
DLC, Ground, MIL and Power
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
G106
Engine Controls Schematic Icons
Engine Controls Schematic Icons
Figure 7:

Fuel Injectors and Fuel Pump


Object Number: 1615878  Size: FS
Master Electrical Component List
Fuel System Description
Control Module References
EGR, EVAP Controls and FTP Sensor
Ignition System
Engine Controls Schematic Icons
Underhood Fuse Block RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1 and TRANS Fuses
DLC, Ground, MIL and Power
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LP Relay, TRUNK Relay, DRV ST, EMISSIO
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LP Relay, TRUNK Relay, DRV ST, EMISSIO
Indicators
G302
G301
Figure 8:

EGR, EVAP Controls and FTP Sensor


Object Number: 1615880  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Injectors and Fuel Pump
Engine Controls Schematic Icons
Underhood Fuse Block A/C CLUTCH Relay, PWR/TRN Relay, A/C CLU, EMISSION 1, ETC, IGN MOD and IMTV/DOD Fuses
DLC, Ground, MIL and Power
Underhood Fuse Block RBEC 2, RUN RLY, Body Control Module (BCM), HVAC BLOWER HIGH Relay, RUN Relay, HVAC BLOWER, HVAC CTRL (IGN) Rear Fuse Block FUEL Relay, PARK LP Relay, TRUNK Relay, DRV ST, EMISSIO
Figure 9:

Controlled/Monitored Subsystem References


Object Number: 1615882  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Transmission Control References
EGR, EVAP Controls and FTP Sensor
Engine Controls Schematic Icons
Air Temperature and Mode Controls
Ambient Air Temperature Sensor and Compressor Controls
Starting System - LX9
Charging System
Indicators
Cooling Fans
Figure 10:

Transmission Control References


Object Number: 1615884  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Control Module References
Controlled/Monitored Subsystem References
Engine Controls Schematic Icons
Transmission Solenoids ans VSS (LX9)
Transmission Switches, TFT and A/T ISS Sensor (LX9)
Tap Up/Tap Down Switch (LX9)
Transmission Switches, TFT and A/T ISS Sensor (LX9)
PNP Switch (LX9)
Transmission Solenoids ans VSS (LX9)