Engine Controls Schematics. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2003 🢒 Envoy - 2WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Engine Controls Schematics

Figure 1:	Power, Ground, Serial Data and MIL Master Electrical Component List Electronic Ignition (EI) System Description 03 S/T 36Engine Data Sensors-5 Volt and Low Reference OBDII Symbol Description Notice G108 Data Link Connector and SP205 B+ Bus - Underhood Fuse Block PCM I Fuse - 4.2L IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses Power, Ground, Serial Data and MIL IGN 0, TBC IF, TBC ACC, FRT WPR, and RAIN Fuses
Figure 2:	Engine Data Sensors -- 5 Volt and Low Reference Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors-Pressure and Temperature Power, Ground, Serial Data and MIL OBDII Symbol Description Notice
Figure 3:	Engine Data Sensors -- Pressure and Temperature Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors-Oxygen Sensors 03 S/T 36Engine Data Sensors-5 Volt and Low Reference OBDII Symbol Description Notice
Figure 4:	Engine Data Sensors - Oxygen Sensors Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors-Electronic Throttle Controls and VSS Engine Data Sensors-Pressure and Temperature OBDII Symbol Description Notice O2, ETC, ENG I, SIR, HVAC, 4WD Fuses
Figure 5:	Engine Data Sensors - Electronic Throttle Controls and VSS Master Electrical Component List Throttle Actuator Control (TAC) System Description Ignition Controls- Ignition System Engine Data Sensors-Oxygen Sensors Vehicle Speed Sensor Gages
Figure 6:	Ignition Controls - Ignition Systems Master Electrical Component List Electronic Ignition (EI) System Description Fuel Controls - Fuel Pump Controls and Fuel Injectors Engine Data Sensors-Electronic Throttle Controls and VSS OBDII Symbol Description Notice Gages IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses PCM I Fuse - 4.2L
Figure 7:	Ignition Controls - Sensors Master Electrical Component List Camshaft Actuator System Description Fuel Controls - Fuel Pump Controls and Fuel Injectors Ignition Controls- Ignition System OBDII Symbol Description Notice
Figure 8:	Fuel Controls - Fuel Pump Controls and Fuel Injectors Master Electrical Component List Fuel System Description Fuel Controls- EVAP Controls Ignition Controls- Sensors OBDII Symbol Description Notice G201 - 2 of 2, G305 and G306 PCM I Fuse - 4.2L IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses PCM I Fuse - 4.2L COILS, CANISTER, ECAS, IPC/DIC, FLASH, TBC1, and PCM B Fuses G102, G104, G105 and G107
Figure 9:	Fuel Controls - EVAP Controls Master Electrical Component List Evaporative Emission Control System Description Contolled/Monitored Subsystem References Power, Ground and Class 2 OBDII Symbol Description Notice PCM I, O2A, O2B and ENG I Fuses - 5.3L
Figure 10:	Controlled/Monitored Subsystem References Master Electrical Component List Electronic Ignition (EI) System Description 02 S/T 360/370 Engine Control Schematics 4.2L- Transmission Contol Ref - A/T02 STransmission Contol References - A/T Fuel Controls- EVAP Controls OBDII Symbol Description Notice EBCM Power, Ground, and Serial Data Engine Cooling Schematics Power, Ground, Serial Data and Transfer Case Encoder Motor Gages Indicators, DIC Controls, Engine Oil Level and Temperature Sensor Compressor Controls Compressor Controls TAC Motor, APP Sensor, On/Off Switch and Stop Lamp Switch - 4.2L Only Starting System Charging System
Figure 11:	Transmission Control References - A/T Master Electrical Component List Electronic Ignition (EI) System Description Contolled/Monitored Subsystem References OBDII Symbol Description Notice PNP Switch and Indicator ECBM and Vehicle Speed Signal Transmission Controls