Engine Controls Schematics. Chevrolet Express 2003

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2003 🢒 Express 🢒 Engine 🢒 Engine Electrical 🢒 Engine Controls Schematics

Figure 1:	Power, Ground, MIL, and DLC Master Electrical Component List Powertrain Control Module Description 5 Volt Reference (4.3L) OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block IGN B Fuse O2A, O2B, SPARE, BTSI BU, PCM IGN 1, BTSI, and TRLR BU Fuses CRANK, IGN O, TBC ACC, FR WPR, BRKS, and HVAC Fuses CRANK, IGN O, TBC ACC, FR WPR, BRKS, and HVAC Fuses G103, G104, G105, G106, G300, and G301 Data Link Schematics
Figure 2:	5 Volt Reference Master Electrical Component List Powertrain Control Module Description Engine Data Sensors Power, Ground, MIL, and DLC OBD II Symbol Description Notice
Figure 3:	Engine Data Sensors Master Electrical Component List Powertrain Control Module Description Oxygen Sensors 5 Volt Reference (4.3L) OBD II Symbol Description Notice IGN B Fuse O2A, O2B, SPARE, BTSI BU, PCM IGN 1, BTSI, and TRLR BU Fuses O2A, O2B, SPARE, BTSI BU, PCM IGN 1, BTSI, and TRLR BU Fuses Cruise Control Temperature/Pressure/Range Switches, and VSS G103, G104, G105, G106, G300, and G301
Figure 4:	Oxygen Sensors Master Electrical Component List Powertrain Control Module Description Ignition Controls Engine Data Sensors OBD II Symbol Description Notice IGN B Fuse
Figure 5:	Ignition Controls Master Electrical Component List Powertrain Control Module Description Fuel Controls Oxygen Sensors OBD II Symbol Description Notice ENG 1, and ENG 2 Fuses - 4.3L ENG 1, and ENG 2 Fuses - 4.3L Fuel and Device Controls G102
Figure 6:	Fuel Controls Master Electrical Component List Powertrain Control Module Description Fuel Injection Controls Ignition Controls OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block Gages G400 G102
Figure 7:	Fuel Injection Controls Master Electrical Component List Powertrain Control Module Description Fuel and Device Controls Fuel Controls OBD II Symbol Description Notice IGN B Fuse ENG 1, and ENG 2 Fuses - 4.3L
Figure 8:	Fuel, EVAP, and Device Controls Master Electrical Component List Powertrain Control Module Description Controlled/Monitored Subsystem, and Transmission - A/T References Fuel Injection Controls OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block ENG 1, and ENG 2 Fuses - 4.3L ENG 1, and ENG 2 Fuses - 4.3L TRLR STOP/TRN, CAN VENT,LH-LOBM, RH-LOBM, LH-HIBM, and RH-HIBM Fuses Gages Power, Ground, DLC and Indicator Cruise Control ENG 1, and ENG 2 Fuses - 4.3L
Figure 9:	Controlled/Monitored Subsystem and Transmission Controls - A/T References Master Electrical Component List Powertrain Control Module Description Fuel and Device Controls OBD II Symbol Description Notice Compressor Controls (C60) Wheel Speed Sensors, VSS and Brake Pressure Switch Cruise Control Charging System Starting System Gages Indicators Temperature/Pressure/Range Switches, and VSS Power, and Solenoid Valve Controls Power, and Solenoid Valve Controls