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

PCM Power, Ground, Serial Data, and MIL


Object Number: 1173990  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors- 5 Volt and Low Reference
OBD II Symbol Description Notice
Fuse Block-Underhood : Cooling Fan2, Cooling Fan1, ABS1, ABS2, Park Lamp, Hazard, Brake and Controls B+
Fuse Block-Underhood : IGN1/2, IGN0 and IGN0/3/CR - Ignition Switch
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Fuse Block-Underhood : BCM/ECM/Cruise/ABS, Cruise Switch, IGN1 and Backup/Turn
Fuse Block-Underhood : BCM/ECM/Cruise/ABS, Cruise Switch, IGN1 and Backup/Turn
Power, Ground, and Indicators
2.2L
G102, G110, G118, G114
Figure 2:

Engine Data Sensors- 5 Volt and Low Reference


Object Number: 1173992  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors- A/T, M/T w/ ABS
PCM Power, Ground, Serial Data, and MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors- Sensors and Switches (A/T or w/ABS)


Object Number: 1173998  Size: FS
Master Electrical Component List
Air Intake System Description
Engine Data Sensors- M/T w/o ABS
Engine Data Sensors- 5 Volt and Low Reference
OBD II Symbol Description Notice
Fuse Block-Underhood Bus
Fuse Block-Underhood : IGN3 - Fuse Block-Right I/P : Heated Seat
EBCM Power, Ground, Serial Data, and Switches- 2.2L
Solenoids,Speed Sensors, Stop Lamp Switch
Cruise Control Schematics- 2.2L
Stop Lamps
Figure 4:

Engine Data Sensors- Sensors and Switches (M/T w/o ABS)


Object Number: 1210358  Size: FS
Master Electrical Component List
Powertrain Control Module Description
HO2 Sensors
Engine Data Sensors- A/T, M/T w/ ABS
OBD II Symbol Description Notice
Fuse Block-Underhood Bus
Fuse Block-Underhood : IGN3 - Fuse Block-Right I/P : Heated Seat
Fuse Block-Underhood : IGN1/2, IGN0 and IGN0/3/CR - Ignition Switch
EBCM Power, Ground, Serial Data, and Switches- 2.2L
Stop Lamps
Solenoids,Speed Sensors, Stop Lamp Switch
Cruise Control Schematics- 2.2L
G300, G304
G118
Figure 5:

HO2 Sensors


Object Number: 1174336  Size: FS
Master Electrical Component List
Fuel System Description
Ignition Controls
Engine Data Sensors- M/T w/o ABS
OBD II Symbol Description Notice
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Figure 6:

Ignition Controls


Object Number: 1174353  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Fuel Controls
HO2 Sensors
OBD II Symbol Description Notice
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Wheel Speed Sensors
G118
Figure 7:

Fuel Controls


Object Number: 1174354  Size: FS
Master Electrical Component List
Fuel System Description
EVAP and IAC
Ignition Controls
OBD II Symbol Description Notice
Fuse Block-Underhood : AC, Fuel Pump, ENG Control1, ENG Control2 and ENG Control3
G118
Fuse Block-Underhood : Injector, Controls IGN1, EIS and IGN
Gages
G305, G401, G399 and G400
G118
G464, G401, G463 and G403
Figure 8:

EVAP Controls


Object Number: 1174357  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Controlled/Monitored Subsystem References
Fuel Controls
OBD II Symbol Description Notice
Fuse Block-Underhood : BCM/ECM/Cruise/ABS, Cruise Switch, IGN1 and Backup/Turn
Fuse Block-Underhood : BCM/ECM/Cruise/ABS, Cruise Switch, IGN1 and Backup/Turn
Fuse Block-Underhood : Air/Wdo/Sunroof, Air Solenoid, LH HDLP, RH HDLP, BCM2, Lighter and Aux Power
G118
Gages
G118
Figure 9:

Controlled/Monitored Subsystem References


Object Number: 1174367  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Transmission Control References
EVAP and IAC
OBD II Symbol Description Notice
A/C Compressor Controls- 2.2L
A/C Compressor Controls- 2.2L
Wheel Speed Sensors
Cruise Control Schematics- 2.2L
Charging System
Power, Ground, and Indicators
Engine Cooling Schematics
Figure 10:

Transmission Control References


Object Number: 1174421  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
Solenoids,Speed Sensors, Stop Lamp Switch
Manual Transmission Controls Schematic
PNP Switch and PRNDL