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

Module Power, Ground, Serial Data, and MIL


Object Number: 1576184  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - 5-Volt and Low Reference
Engine Controls Schematic Icons
B+ Bus Bar
AUX PWR, AUX PWR 2, DDM, ECC/TCM, ECM B, LBEC 2, LCKS, PCM B, PDM and TCM B Fuses
Ignition Switch - ACC/RUN and RUN/START BUS BARS and IGN B Fuse
ECM 1, EHPS-I, FUEL HTR, and HCM-I Fuses
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A and CRNK Fuses
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
G102, G103 and G108 - Diesel
High Speed GM LAN Serial Data 8.1L and Diesel
Power, Ground, DLC, and Splice Pack SP205
Engine Data Sensors - Glow Plug Controls
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference


Object Number: 1576185  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Pressure, Temperature, MAF, and VSS
Module Power, Ground, Serial Data, and MIL
Engine Controls Schematic Icons
Figure 3:

Engine Data Sensors - Pressure, Temperature, MAF, and VSS


Object Number: 1576189  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - EGR and Turbocharger Controls
Engine Data Sensors - 5-Volt and Low Reference
Engine Controls Schematic Icons
Interal Mode Switch (IMS) and Speed Sensors
Manual Transmission - ZF56-650
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
Ignition Switch - ACC/RUN and RUN/START BUS BARS and IGN B Fuse
ECM 1, EHPS-I, FUEL HTR, and HCM-I Fuses
Figure 4:

Engine Data Sensors - EGR and Turbocharger Controls


Object Number: 1576190  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Pedal Position and Injection Timing
Engine Data Sensors - Pressure, Temperature, MAF, and VSS
Engine Controls Schematic Icons
Figure 5:

Engine Data Sensors - Pedal Position and Injection Timing


Object Number: 1576192  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Engine Data Sensors - Glow Plug Controls
Engine Data Sensors - EGR and Turbocharger Controls
Engine Controls Schematic Icons
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
G102, G103 and G108 - Diesel
Figure 6:

Engine Data Sensors - Glow Plug Controls


Object Number: 1576196  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Fuel Pump, Temperature, and Pressure Controls
Engine Data Sensors - Pedal Position and Injection Timing
Engine Controls Schematic Icons
Indicators, Water in Fuel Sensor, Engine Oil Level Switch, and Washer Fluid Level Switch
Ignition Switch - ACC/RUN and RUN/START BUS BARS and IGN B Fuse
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A and CRNK Fuses
High Speed GM LAN Serial Data 8.1L and Diesel
ECM 1, EHPS-I, FUEL HTR, and HCM-I Fuses
Battery Supply - 2 of 2
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
Module Power, Ground, Serial Data, and MIL
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
Figure 7:

Fuel Controls - Fuel Pump, Temperature, and Pressure Controls


Object Number: 1576198  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Fuel Injectors
Engine Data Sensors - Glow Plug Controls
Engine Controls Schematic Icons
G104, G107, and G110
Module Power, Ground, Serial Data, and MIL
AUX PWR, AUX PWR 2, DDM, ECC/TCM, ECM B, LBEC 2, LCKS, PCM B, PDM and TCM B Fuses
Ignition Switch - ACC/RUN and RUN/START BUS BARS and IGN B Fuse
ECM 1, EHPS-I, FUEL HTR, and HCM-I Fuses
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
G102, G103 and G108 - Diesel
G104, G107, and G110
G104, G107, and G110
G102, G103 and G108 - Diesel
Figure 8:

Fuel Controls - Fuel Injectors


Object Number: 1576199  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Pump, Temperature, and Pressure Controls
Engine Controls Schematic Icons
Figure 9:

Controlled/Monitored Subsystem Refereces


Object Number: 1576201  Size: FS
Master Electrical Component List
Engine Control Module Description
Control Module References
Fuel Controls - Fuel Injectors
Engine Controls Schematic Icons
A/C Compressor Control
A/C Compressor Controls
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
Power, Ground, Serial Data, and Transfer Case Encoder Motor
Transfer Case Control Schematics
Transfer Case Control Schematics
Power Take Off
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
Starting - Diesel
Backup Lamps (Except MW7)
Indicators, Water in Fuel Sensor, Engine Oil Level Switch, and Washer Fluid Level Switch
Charging - Diesel
Power, Ground, Serial Data, Indicator, and Stop Lamp Switch - Greater than 8600 GVW or w/Rear Drum Brakes
Power, Ground, Serial Data, Indicator, and Stop Lamp Switch - Greater than 8600 GVW or w/Rear Drum Brakes
Diesel
Manual Transmission - ZF56-650
8.1L and Diesel
Stop Lamp Switch and Signals
Interal Mode Switch (IMS) and Speed Sensors