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

Module Power, Ground, Serial Data, and MIL


Object Number: 1694214  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - 5-Volt and Low Reference
G102 and G108
B+ Bus - 3 of 3
RUN/CRANK Bus - ECM-IGN and TRANS IGN 1 Fuses
B+ Bus - 1 of 3
G102 and G108
G103, G110, and G111
High Speed Bus - 1 of 2
DLIS Fuse and Ignition Switch
DLIS Fuse and Ignition Switch
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 1804768  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Pressure and Temperature
Module Power, Ground, Serial Data, and MIL
Figure 3:

Engine Data Sensors - Pressure and Temperature


Object Number: 1694216  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Oxygen Sensors
Engine Data Sensors - 5-Volt and Low Reference
PNP Signals, VSS Signal, and Tow/Haul Signal
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
Module Power, Ground, Serial Data, and MIL
G103, G110, and G111
Figure 4:

Engine Data Sensors - Oxygen Sensors


Object Number: 1694218  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Throttle Controls
Engine Data Sensors - Pressure and Temperature
Module Power, Ground, Serial Data, and MIL
Figure 5:

Engine Data Sensors - Throttle Controls


Object Number: 1694219  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Ignition Controls - Ignition System Coils 1, 3, 5, and 7
Engine Data Sensors - Oxygen Sensors
Figure 6:

Ignition Controls - Ignition System Coils 1, 3, 5, and 7


Object Number: 1694221  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Ignition Controls - Ignition System Coils 2, 4, 6, and 8
Engine Data Sensors - Throttle Controls
Module Power, Ground, Serial Data, and MIL
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
G102 and G108
Figure 7:

Ignition Controls - Ignition System Coils 2, 4, 6, and 8


Object Number: 1694222  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Ignition Controls - Sensors and Active Fuel Management (AFM) Controls
Ignition Controls - Ignition System Coils 1, 3, 5, and 7
Module Power, Ground, Serial Data, and MIL
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
G102 and G108
Figure 8:

Ignition Controls - Sensors and Active Fuel Management (AFM) Controls


Object Number: 1694223  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Fuel Pump Controls
Ignition Controls - Ignition System Coils 2, 4, 6, and 8
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
Module Power, Ground, Serial Data, and MIL
Figure 9:

Fuel Controls - Fuel Pump Controls


Object Number: 1694224  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Fuel Injectors
Ignition Controls - Sensors and Active Fuel Management (AFM) Controls
B+ Bus - 1 of 3
G102 and G108
G102 and G108
G300 and G302
Figure 10:

Fuel Controls - Fuel Injectors


Object Number: 1694226  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - EVAP Controls
Fuel Controls - Fuel Pump Controls
Module Power, Ground, Serial Data, and MIL
PWR/TRN Bus - INJ-A and INJ-B Fuses
Figure 11:

Fuel Controls - EVAP Controls


Object Number: 1694228  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Injectors
Module Power, Ground, Serial Data, and MIL
B+ Bus - 1 of 3
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
ECM-BATT, HEADLAMP WASH, HVAC BATT, IPC, LTR, S/ROOF, and TCM-BATT Fuses
PWR/TRN Bus - ECM/THROT CONT, ENG, O2-A SNSR, and O2-B SNSR Fuses
Gages
Figure 12:

Controlled/Monitored Subsystem References


Object Number: 1694229  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - EVAP Controls
Engine Cooling Schematics
A/C Compressor Controls
A/C Compressor Controls
Stop Lamp Controls and CHMSL
Encoder Motor and Serial Data
Charge
Starting
PNP Signals, VSS Signal, and Tow/Haul Signal
PNP Signals, Speed Signals, and Tow/Haul Signal
Transmission Range Signals and Driver Shift Request
Indicators
Gages
JH6 Over 8600 GVW