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

Power, Ground, Serial Data and MIL


Object Number: 1961934  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Pressure, Temperature, MAF and VSS
B+ Bus
Ignition Switch
Fuse Block - Underhood EF33 Fuse
Fuse Block - Underhood EF33 Fuse
Indicators 2 of 3
Power, Ground, Class 2
High Speed GMLAN - M98 (LHD)
High Speed GMLAN - M98 (RHD)
High Speed GMLAN - MH7/MH8
High Speed GMLAN - MFB/MFN
G103, G105, G108 (Diesel), G201
Figure 2:

Engine Data Sensors - Pressure, Temperature, MAF and VSS


Object Number: 1961935  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Oxygen Sensors
Power, Ground, Serial Data and MIL
Power, Ground, Serial Data and MIL
Fuse Block - Underhood EF33 Fuse
Fuel Controls - EVAP Controls
Manual Transmission Schematics
Manual Transmission Schematics
Figure 3:

Engine Data Sensors - Oxygen Sensors


Object Number: 1961937  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Electronic Throttle Controls
Engine Data Sensors - Pressure, Temperature, MAF and VSS
Power, Ground, Serial Data and MIL
Fuse Block - Underhood EF33 Fuse
Figure 4:

Electronic Throttle Controls


Object Number: 1961938  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Control Module References
Ignition System, 1 of 2
Engine Data Sensors - Oxygen Sensors
Figure 5:

Ignition System, 1 of 2


Object Number: 1961941  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition System, 2 of 2
Electronic Throttle Controls
B+ Bus
Ignition System, 2 of 2
Ignition System, 2 of 2
Ignition System, 2 of 2
G104
Figure 6:

Ignition System, 2 of 2


Object Number: 1961944  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Control Module References
Ignition Controls - Sensors
Ignition System, 1 of 2
Ignition System, 1 of 2
Ignition System, 1 of 2
Figure 7:

Ignition Controls - Sensors


Object Number: 1961945  Size: FS
Master Electrical Component List
Knock Sensor (KS) System Description
Control Module References
Fuel Pump and Fuel Injectors
Ignition System, 2 of 2
Power, Ground, Serial Data and MIL
Fuse Block - Underhood EF33 Fuse
Figure 8:

Fuel Pump and Fuel Injectors


Object Number: 1961946  Size: FS
Master Electrical Component List
Fuel System Description
Control Module References
Fuel Controls - EVAP Controls
Ignition Controls - Sensors
Power, Ground, Serial Data and MIL
Ignition Switch
Fuse Block - Underhood ALTERNATOR, EF1, EF3, EF5, EF18, EF19, Ef27, EF30, EF31 Fuses and POWER WINDOW, ENGINE MAIN Relays
Fuse Block - I/P F10, F16, F17 Fuses
Fuse Block - Underhood EF26, EF28 Fuses and FUEL PUMP Relay
G303
Figure 9:

Fuel Controls - EVAP Controls


Object Number: 1961948  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Pump and Fuel Injectors
Power, Ground, Serial Data and MIL
Fuse Block - Underhood EF33 Fuse
Fuse Block - Underhood EF33 Fuse
Engine Data Sensors - Pressure, Temperature, MAF and VSS
Compressor Controls
Compressor Controls
Figure 10:

Controlled/Monitored Subsystem References


Object Number: 1961951  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - EVAP Controls
Stop Lamps
Power, Ground, Gages and Serial Data (Gasoline)
2.0L/2.5L
Compressor Controls
Compressor Controls
Power, Ground, Indicator/Warning Lamps and Switches (JL9/NW9)
Manual Transmission Schematics
Manual Transmission Schematics