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

Module Power, Ground, Serial Data and MIL


Object Number: 764995  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors - 5 Volt and Low Reference
OBD II Symbol Description Notice
IGN SW Fuse (Fuse Block-Rear)
Battery Feed to the Fuse Block-Underhood
Battery Feed to the Fuse Block-Underhood
G104 and G105, LX5
Serial Data Class 2
Engine Data Sensors - 5 Volt and Low Reference
Figure 2:

Engine Data Sensors -- 5 Volt and Low Reference


Object Number: 786379  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors - Pressure and Temperature
Module Power, Ground, Serial Data and MIL
Module Power, Ground, Serial Data and MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors -- Pressure and Temperature


Object Number: 784571  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors - MAF, VSS and Extended Brake Travel Switch
Engine Data Sensors - 5 Volt and Low Reference
OBD II Symbol Description Notice
Figure 4:

Engine Data Sensors -- MAF, VSS and Extended Brake Travel Switch


Object Number: 784600  Size: FS
Master Electrical Component List
Air Intake System Description
Engine Data Sensors - 02 and/or HO2S
Engine Data Sensors - Pressure and Temperature
OBD II Symbol Description Notice
Battery Feed to the Fuse Block-Underhood
G104 and G105, LX5
Transmission W/LX5
Gages
G104 and G105, LX5
Figure 5:

Engine Data Sensors -- 02 and/or HO2S


Object Number: 598330  Size: FS
Master Electrical Component List
Air Intake System Description
Ignition Controls - Ignition System
Engine Data Sensors - MAF, VSS and Extended Brake Travel Switch
OBD II Symbol Description Notice
Battery Feed to the Fuse Block-Underhood
Fuel Controls - EVAP Controls
Fuel Controls - EVAP Controls
Figure 6:

Igntion Controls -- Ignition System


Object Number: 784557  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Ignition Controls - Sensors
Engine Data Sensors - 02 and/or HO2S
OBD II Symbol Description Notice
Battery Feed to the Fuse Block-Underhood
Gages
Figure 7:

Ignition Controls -- Sensors


Object Number: 764998  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Fuel Controls - Fuel Pump Controls
Ignition Controls - Ignition System
OBD II Symbol Description Notice
Figure 8:

Fuel Controls -- Fuel Pump Controls


Object Number: 784569  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Controls - Fuel Injectors
Ignition Controls - Sensors
OBD II Symbol Description Notice
G302
G401 (1 of 2)
Battery Feed to the Fuse Block-Rear
Gages
Serial Data Class 2
Figure 9:

Fuel Controls -- Fuel Injectors


Object Number: 397406  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Controls - EVAP Controls
Fuel Controls - Fuel Pump Controls
OBD II Symbol Description Notice
Battery Feed to the Fuse Block-Underhood
Figure 10:

Fuel Controls -- EVAP Controls


Object Number: 598327  Size: FS
Master Electrical Component List
Exhaust Gas Recirculation (EGR) System Description
Device Controls
Fuel Controls - Fuel Injectors
OBD II Symbol Description Notice
Gages
Compressor Control W/LX5 (V6)
Battery Feed to the Fuse Block-Rear
Engine Data Sensors - 02 and/or HO2S
Battery Feed to the Fuse Block-Underhood
Figure 11:

Device Controls


Object Number: 784580  Size: FS
Master Electrical Component List
Secondary Air Injection System Description
Fuel Controls - EVAP Controls
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
Battery Feed to the Fuse Block-Underhood
Battery Feed to the Fuse Block-Underhood
L47 IGN 1, OXY SEN, DIS Fuses and IGN 1 Relay (Fuse Block-Underhood)
Figure 12:

Controlled/Monitored Subsystem References


Object Number: 784589  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Transmission Controls - A/T
Device Controls
OBD II Symbol Description Notice
Cooling Fans and Relays
Compressor Control W/LX5 (V6)
Indicators
Starter Solenoid Controls
CCM, PCM Controls and Vehicle Speed Input
Traction Control (w/NW9) and Variable Effort Steering (w/NV8)
Figure 13:

Transmission Controls -- A/T


Object Number: 696239  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
Transmission Solenoids
Internal Mode Switch Inputs
Transmission W/LX5