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

PCM Power, Ground, Serial Data, and MIL


Object Number: 1254323  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 Fuses: Cooling Fan 2, Cooling Fan 1, ABS1, ABS2, Parklamp
Fuse Block-Underhood : IGN1/2, IGN0 and IGN0/3/CR - Ignition Switch
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
Fuse Block - Underhood Fuses: BCM/ECM/CRUISE/ABS, Cruise Switch, IGN1 and Backup/Turn
Fuse Block - Underhood Fuses: BCM/ECM/CRUISE/ABS, Cruise Switch, IGN1 and Backup/Turn
DLC Schematics (2.2L)
G102, G110, G118, G114
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 1254333  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors
Module Power, Ground, Serial Data, MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors- Sensors and Switches


Object Number: 1254334  Size: FS
Master Electrical Component List
Powertrain Control Module Description
HO2S
Engine Data Sensors-5 Volt and Low Reference
OBD II Symbol Description Notice
Fuse Block - Underhood Fuses: Cooling Fan 2, Cooling Fan 1, ABS1, ABS2, Parklamp
Fuse Block-Underhood: IGN3; Fuse Block-Right I/P: Heated Seat
Module Power, Ground, Serial Data, and Switches - 2.2L
Stop Lamps
Sensors, Solenoids, Switches
Cruise Control Schematics - 2.2L
Figure 4:

HO2 Sensors


Object Number: 1254339  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Ingition Controls
Engine Data Sensors
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
Figure 5:

Ignition Controls


Object Number: 1254342  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Fuel Controls
HO2S
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
G118
Figure 6:

Fuel Controls


Object Number: 1254343  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Fuel Controls - EVAP Controls
Ingition Controls
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
Fuse Block - Underhood Bus
G118
Gages
G305, G401, G399, G400
G118
G305, G401, G399, G400
Figure 7:

EVAP Controls


Object Number: 1254345  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
Fuel Controls
OBD II Symbol Description Notice
Body Rear End Schematics
Fuse Block-Underhood Fuses: IP BATT RT FUse Block- Right I/P Fuses: Prev Amp, Door Locks, Body, Fog Lamps
Fuse Block-Underhood Fuses: Injector, Cntrls, IGN1, EIS, IGN
G118
Gages
G118
Figure 8:

Controlled/Monitored Subsystem References


Object Number: 1254346  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Transmission Control References
Fuel Controls - EVAP Controls
OBD II Symbol Description Notice
A/C Compressor Controls - 2.2L
Wheel Speed Sensors
Cruise Control Schematics - 2.2L
Charging System
Indocators
Engine Cooling Schematics
Figure 9:

Transmission Control References


Object Number: 1254348  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
Sensors, Solenoids, Switches
Sensors, Solenoids, Switches