Engine Controls Schematics. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2003 🢒 Envoy - 2WD 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Engine Controls Schematics

Figure 1:	Module Power, Ground, Serial Data and MIL Master Electrical Component List Electronic Ignition (EI) System Description Fuse Block Underhood IGN 1 Relay OBDII Symbol Description Notice Data Link Connector and SP205 G108 B+ Bus - Underhood Fuse Block IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses B+ Bus - Underhood Fuse Block 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:	Fuse Block - Underhood IGN 1 Relay Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors - 5 Volt and Low Reference Module Power, Ground, Serial Data and MIL OBDII Symbol Description Notice ACCY/RUN and RUN/START Bus Bars ACCY/RUN and RUN/START Bus Bars G102, G104, G105 and G107
Figure 3:	Engine Data Sensors - 5 Volt and Low Reference Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors - Pressure, Temperature and VSS Fuse Block Underhood IGN 1 Relay OBDII Symbol Description Notice
Figure 4:	Engine Data Sensors - Pressure, Temperature and VSS Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors - Oxygen Sensors Engine Data Sensors - 5 Volt and Low Reference OBDII Symbol Description Notice Gages G108 PCM I, O2A, O2B and ENG I Fuses - 5.3L PCM I, O2A, O2B and ENG I Fuses - 5.3L
Figure 5:	Engine Data Sensors - Oxygen Sensors Master Electrical Component List Electronic Ignition (EI) System Description Engine Data Sensors - Electronic Throttle Controls Engine Data Sensors - Pressure, Temperature and VSS OBDII Symbol Description Notice G108 PCM I, O2A, O2B and ENG I Fuses - 5.3L
Figure 6:	Engine Data Sensors - Electronic Throttle Controls Master Electrical Component List Throttle Actuator Control (TAC) System Description Ignition Controls - Ignition System Coils 2, 4, 6, 8 Engine Data Sensors - Oxygen Sensors OBDII Symbol Description Notice G108 Fuse Block Underhood IGN 1 Relay TAC Motor, APP Sensor, On/Off Switch and Stop Lamp Switch - 4.2L Only Stop Lamps
Figure 7:	Ignition Controls - Ignition Systems Coils 1, 3, 5, 7 Master Electrical Component List Electronic Ignition (EI) System Description Ignition Controls- Sensors Ignition Controls - Ignition System Coils 2, 4, 6, 8 OBDII Symbol Description Notice G109 ETC, INJ A and INJ B Fuses - 5.3L ETC, INJ A and INJ B Fuses - 5.3L
Figure 8:	Ignition Controls - Ignition System Coils 2, 4, 6, 8 Master Electrical Component List Electronic Ignition (EI) System Description Ignition Controls - Ignition System Coils 1, 3, 5, 7 Engine Data Sensors - Electronic Throttle Controls OBDII Symbol Description Notice G109 ETC, INJ A and INJ B Fuses - 5.3L ETC, INJ A and INJ B Fuses - 5.3L
Figure 9:	Ignition Controls - Sensors Master Electrical Component List Knock Sensor (KS) System Description Fuel Controls - Fuel Pump Controls and Fuel Injectors Ignition Controls - Ignition System Coils 1, 3, 5, 7 OBDII Symbol Description Notice
Figure 10:	Fuel Controls - Fuel Pump Controls and Fuel Injectors Master Electrical Component List Fuel System Description Without Returnless Fuel System Fuel Controls - EVAP Controls Ignition Controls- Sensors OBDII Symbol Description Notice G201 - 2 of 2, G305 and G306 Fuel Controls - EVAP Controls ETC, INJ A and INJ B Fuses - 5.3L ETC, INJ A and INJ B Fuses - 5.3L B+ Bus - Underhood Fuse Block G102, G104, G105 and G107
Figure 11:	Fuel Controls - EVAP Controls Master Electrical Component List Evaporative Emission Control System Description Controlled/Monitored Subsystem References Fuel Controls - Fuel Pump Controls and Fuel Injectors OBDII Symbol Description Notice Fuel Controls - Fuel Pump Controls and Fuel Injectors PCM I, O2A, O2B and ENG I Fuses - 5.3L PCM I, O2A, O2B and ENG I Fuses - 5.3L COILS, CANISTER, ECAS, IPC/DIC, FLASH, TBC1, and PCM B Fuses
Figure 12:	Controlled/Monitored Subsystem References
Figure 13:	Transmission Controls References - A/T Master Electrical Component List Electronic Ignition (EI) System Description Controlled/Monitored Subsystem References OBDII Symbol Description Notice Vehicle Speed Sensor PNP Switch and Indicator Transmission Controls