Engine Controls Schematics. GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2004

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Engine 🢒 Engine Controls - 7.8L 🢒 Engine Controls Schematics

Engine Controls Schematics w/o CTF

Figure 1:	Module Power, Ground, Serial Data, and MIL Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - 5 Volt and Low Reference Engine Controls Schematic Icons Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars B+ Bus Bar START and TRANS Fuses/Circuit Breakers ENGINE and PCM-I Fuses/Circuit Breakers GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers A/C COMP, HTD FUEL, PCM-B, and RR DEFOG Fuses Power and Indicators Engine Data Sensors - Glow Plug Controls Electronic Fan Controls, Coolant Level Switch G103 - 1 of 2, G105, and G106 G103 - 2 of 2 J1939 Serial Data (L65/L18/LG4/LC8) - 2 of 2
Figure 2:	Engine Data Sensors - 5-Volt and Low Reference Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - Pressure and Temperature Module Power, Ground, Serial Data, and MIL Engine Controls Schematic Icons
Figure 3:	Engine Data Sensors - Pressure and Temperature Sensors Master Electrical Component List Turbocharger System Description (Without RPO CTF) Engine Data Sensors - Pedal Position Engine Data Sensors - 5 Volt and Low Reference Engine Controls Schematic Icons Ground and Gages Fuel Gage
Figure 4:	Engine Data Sensors - Pedal Position Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - Glow Plug Controls Engine Data Sensors - Pressure and Temperature Engine Controls Schematic Icons Ignition Switch - RUN and ACC/RUN Bus Bars AXLE/4WD, BRAKE, CHASSIS, and HTR/AC Fuses/Circuit Breakers G101 - 1 of 2
Figure 5:	Engine Data Sensors - Glow Plugs Controls Master Electrical Component List Glow Plug System Description Fuel Controls - Water in Fuel/Temperature Sensors Engine Data Sensors - Pedal Position Engine Controls Schematic Icons Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers Module Power, Ground, Serial Data, and MIL Module Power, Ground, Serial Data, and MIL Module Power, Ground, Serial Data, and MIL
Figure 6:	Fuel Controls - Water In Fuel/Temperature Sensors Master Electrical Component List Fuel System Description (Without RPO CTF) Fuel Controls - Fuel Injectors Engine Data Sensors - Glow Plug Controls Engine Controls Schematic Icons B+ Bus Bar B+ Bus Bar Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars ENG 2, ENG 3, and O2A Fuses - LG4 GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers Driver Information Center (DIC) G103 - 1 of 2, G105, and G106 G118, G119, and G120
Figure 7:	Fuel Controls - Fuel Injectors Master Electrical Component List Fuel System Description (Without RPO CTF) Controlled/Monitored Subsystem Reference Fuel Controls - Water in Fuel/Temperature Sensors Engine Controls Schematic Icons B+ Bus Bar ENG 1 and ENG 4 Fuses (LG4/LG5) G100 (LG4)
Figure 8:	Controlled/Monitored Subsystem References - 1 of 2 Master Electrical Component List Engine Control Component Description (Without RPO CTF) Controlled/Monitored Subsystem Reference Fuel Controls - Fuel Injectors Engine Controls Schematic Icons Power Take-Off (LG4/L18/LB7) - 2 of 2 Power Take-Off (LG4/L18/LB7) - 1 of 2
Figure 9:	Controlled/Monitored Subsystems References - 2 of 2 Master Electrical Component List Engine Control Component Description (Without RPO CTF) Controlled/Monitored Subsystem Reference Engine Controls Schematic Icons Ground and Gages Engine Exhaust System Electronic Fan Controls, Coolant Level Switch L18/LB7/LG4/LLY Starting System (L18/LB7/LLY) Backup Lamps Blower Controls (C60) Hydraulic Two Speed Axle Controls

Engine Controls Schematics CTF

Figure 1:	Module Power, Ground, Serial Data, and MIL Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - 5-Volt and Low Reference Engine Controls Schematic Icons Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars B+ Bus Bar A/C COMP, HTD FUEL, PCM-B, and RR DEFOG Fuses START and TRANS Fuses/Circuit Breakers GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers Power and Indicators Engine Data Sensors - Pressure and Temperature 2 of 2 Engine Data Sensors - Pressure and Temperature 1 of 2 Engine Data Sensors - VSS and Injector Timing Controls G103 - 2 of 2 G103 - 1 of 2, G105, and G106 J1939 Serial Data (L65/L18/LG4/LC8) - 2 of 2
Figure 2:	Engine Data Sensors - 5-Volt and Low Reference Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - Pressure and Temperature 1 of 2 Module Power, Ground, Serial Data, and MIL Engine Controls Schematic Icons
Figure 3:	Engine Data Sensors - Pressure and Temperature 1 of 2 Master Electrical Component List Engine Control Component Description (Without RPO CTF) Engine Data Sensors - Pressure and Temperature 2 of 2 Engine Data Sensors - 5-Volt and Low Reference Engine Controls Schematic Icons Module Power, Ground, Serial Data, and MIL
Figure 4:	Engine Data Sensors - Pressure and Temperature - 2 of 2 Master Electrical Component List Fuel System Description (Without RPO CTF) Engine Data Sensors - APP Sensor and High Idle Switch - UF3 Engine Data Sensors - Pressure and Temperature 1 of 2 Engine Controls Schematic Icons Ground and Gages Module Power, Ground, Serial Data, and MIL
Figure 5:	Engine Data Sensors - APP Sensor and High Idle Switch - UF3 Master Electrical Component List Fuel System Description (Without RPO CTF) Engine Data Sensors - VSS and Injector Timing Controls Engine Data Sensors - Pressure and Temperature 2 of 2 Engine Controls Schematic Icons Ignition Switch - RUN and ACC/RUN Bus Bars AXLE/4WD, BRAKE, CHASSIS, and HTR/AC Fuses/Circuit Breakers G101 - 1 of 2
Figure 6:	Engine Data Sensors - VSS and Injector Timing Controls Master Electrical Component List Turbocharger System Description (Without RPO CTF) Engine Data Sensors - EGR Valve and Glow Plug Controls Engine Data Sensors - APP Sensor and High Idle Switch - UF3 Engine Controls Schematic Icons Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers Engine Data Sensors - APP Sensor and High Idle Switch - UF3
Figure 7:	Engine Data Sensors - EGR Valve and Glow Plug Controls Master Electrical Component List Turbocharger System Description (Without RPO CTF) Fuel Controls - Fuel Sensors and Suction Control Valve (SCV) Engine Data Sensors - VSS and Injector Timing Controls Engine Controls Schematic Icons B+ Bus Bar B+ Bus Bar Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars ENG 2, ENG 3, and O2A Fuses - LG4 GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers Driver Information Center (DIC) G103 - 1 of 2, G105, and G106 G118, G119, and G120 G118, G119, and G120
Figure 8:	Fuel Controls - Fuel Sensors and Suction Control Valve (SCV) Master Electrical Component List Turbocharger System Description (Without RPO CTF) Fuel Controls - Fuel Injectors Engine Data Sensors - EGR Valve and Glow Plug Controls Engine Controls Schematic Icons B+ Bus Bar ENG 1 and ENG 4 Fuses (LG4/LG5) G103 - 1 of 2, G105, and G106
Figure 9:	Fuel Controls - Fuel Injectors Master Electrical Component List Turbocharger System Description (Without RPO CTF) Controlled/Monitored Subsystem References Fuel Controls - Fuel Sensors and Suction Control Valve (SCV) Engine Controls Schematic Icons Power Take-Off (LG5) Power Take-Off (LG5)
Figure 10:	Controlled/Monitored Subsystem References Master Electrical Component List Turbocharger System Description (Without RPO CTF) Fuel Controls - Fuel Injectors Engine Controls Schematic Icons Ground and Gages Electronic Fan Controls, Coolant Level Switch Engine Exhaust System L18/LB7/LG4/LLY Starter Control (LG4/LG5) Backup Lamps A/C Compressor Controls (C60) Traction Control and Brake Lamp Switch Two Speed Axle Controls