Engine Controls Schematics. Chevrolet Express 2004

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2004 🢒 Express 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Engine Controls Schematics

Figure 1:	Module Power, Ground, Serial Data and MIL Master Electrical Component List Powertrain Control Module Description 5 Volt and Low Reference OBD II Symbol Description Notice PCM BAT, ABS, TRLR, BLOW, STOP LP, IPC AUX PWR and CIGAR Fuses IGN B Fuse, ACCY/RUN and RUN/START Bus Bars O2A, O2B, SPARE, BTSI/BU, PCM IGN 1, BTSI and TRLR BU Fuses Crank, IGN 0, TBC ACC, FR WPR, BRKS and HVAC Fuses Crank, IGN 0, TBC ACC, FR WPR, BRKS and HVAC Fuses G103, G104, G105, G106, G300 and G301 Data Link Connector (DLC)
Figure 2:	5-Volt and Low Reference Master Electrical Component List Powertrain Control Module Description Engine Data Sensors - Pressure, Temperature and Position Module Power, Ground, Serial Data and MIL OBD II Symbol Description Notice
Figure 3:	Engine Data Sensors - Pressure, Temperature and Position Master Electrical Component List Powertrain Control Module Description Engine Data Sensors - Oxygen Sensors 5 Volt and Low Reference OBD II Symbol Description Notice IGN B Fuse, ACCY/RUN and RUN/START Bus Bars ENG 1 and ENG 2 Fuses - 4.3L ENG 1 and ENG 2 Fuses - 4.3L w/o JL4 Tow/Haul and Park/Neutral Position Switch Inputs and Vehicle Speed Sensor G103, G104, G105, G106, G300 and G301
Figure 4:	Engine Data Sensors - Oxygen Sensors Master Electrical Component List Powertrain Control Module Description Ignition Controls Engine Data Sensors - Pressure, Temperature and Position OBD II Symbol Description Notice IGN B Fuse, ACCY/RUN and RUN/START Bus Bars
Figure 5:	Ignition Controls Master Electrical Component List Powertrain Control Module Description Fuel Controls - Fuel Pump Controls Engine Data Sensors - Oxygen Sensors OBD II Symbol Description Notice IGN B Fuse, ACCY/RUN and RUN/START Bus Bars ENG 1 and ENG 2 Fuses - 4.3L ENG 1 and ENG 2 Fuses - 4.3L Engine Controls Schematic Icons G102
Figure 6:	Fuel Controls - Fuel Pump Controls Master Electrical Component List Powertrain Control Module Description Fuel Controls - Fuel Injectors Ignition Controls OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block Gages G400 G102
Figure 7:	Fuel Controls - Fuel Injectors Master Electrical Component List Powertrain Control Module Description Fuel Controls - EVAP and Device Controls Fuel Controls - Fuel Pump Controls OBD II Symbol Description Notice IGN B Fuse, ACCY/RUN and RUN/START Bus Bars ENG 1 and ENG 2 Fuses - 4.3L
Figure 8:	Fuel Controls - EVAP and Device Controls Master Electrical Component List Powertrain Control Module Description Controlled/Monitored Subsystem and Transmission References Fuel Controls - Fuel Injectors OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block IGN B Fuse, ACCY/RUN and RUN/START Bus Bars TRLR STOP/TRN, CAN VENT, LH-LOBM, RH-LOBM, LH-HIBM and RH-HIBM Fuses ENG 1 and ENG 2 Fuses - 4.3L ENG 1 and ENG 2 Fuses - 4.3L Gages Power, Ground, Serial Data, Indicator and Stop Lamp Switch - w/o VSES w/o JL4
Figure 9:	Controlled/Monitored Subsystem and Transmission References Master Electrical Component List Powertrain Control Module Description Fuel Controls - EVAP and Device Controls OBD II Symbol Description Notice Compressor Controls - C60 Wheel Speed Sensors and VSS - w/o VSES w/o JL4 Charging System Starting System Gages Tow/Haul and Park/Neutral Position Switch Inputs and Vehicle Speed Sensor Valve Controls and Switch Inputs Valve Controls and Switch Inputs