Engine Controls Component Views. GMC Truck TopKick C-Series (Conventional) C4/C5 2007

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls and Fuel - 7.8L (LF8) 🢒 Engine Controls Component Views

Figure 1:


(1)	Exhaust Gas Recirculation (EGR) Cooler Temperature Sensor 1
(2)	Throttle Body
(3)	C129
(4)	Exhaust Gas Recirculation (EGR) Cooler Temperature Sensor 2
(5)	Engine Coolant Temperature (ECT) Sensor

Figure 2:


(1)	Turbocharger Vane Position Connector
(2)	Turbocharger Vane Position Control Solenoid Valve
(3)	Turbocharger
(4)	Engine Oil Pressure (EOP) Sensor
(5)	Turbocharger Vane Position Sensor
(6)	Flywheel Sensor
(7)	Camshaft Position (CMP) Sensor

Figure 3:


(1)	C122
(2)	Manifold Absolute Pressure (MAP) Sensor
(3)	C123
(4)	Engine Control Module (ECM) C2
(5)	Intake Manifold Temperature (IMT) Sensor
(6)	Fuel Temperature Sensor
(7)	Suction Control Valve (SCV)
(8)	Crankshaft Position (CKP) Sensor
(9)	G100
(10)	Oil Level Switch
(11)	C111
(12)	Fuel Rail Pressure (FRP) Sensor
(13)	Water in Fuel Sensor
(14)	Glow Plug Control Module
(15)	Exhaust Gas Recirculation (EGR) Valve

Figure 4:


(1)	Fuel Injector Connector C123 - to the fuel injector harness connector adapter 2
(2)	Glow Plug 5
(3)	Fuel Temperature Sensor
(4)	Glow Plug 6

Figure 5:


(1)	Fuel Injector 1
(2)	Fuel Injector 2
(3)	C122 (8 cavities)
(4)	Fuel Injector 3
(5)	Glow Plug 3
(6)	Glow Plug Bus 2
(7)	Fuel Injector Harness Connector Adapter 1 (C122)
(8)	Glow Plug 2
(9)	Glow Plug Bus 1
(10)	Glow Plug 1

Figure 6:


(1)	Fuel Injector 4
(2)	C123 (8 cavities)
(3)	Fuel Injector 5
(4)	Fuel Injector 6
(5)	Glow Plug 6
(6)	Glow Plug Bus 2
(7)	Glow Plug 5
(8)	Fuel Injector Harness Connector Adapter 2 (C123)
(9)	Glow Plug 4
(10)	Glow Plug Bus 1

Figure 7:


(1)	Boost Pressure Sensor
(2)	Intake Manifold

Figure 8:


(1)	Crankshaft Position (CKP) Sensor (Allison® LCT)

Figure 9:


(1)	Fuel Sender - Primary
(2)	Fuel Tank
(3)	Low Air Pressure Switch - Primary
(4)	Low Air Pressure Switch - Secondary
(5)	Splice Pack SP400 (Ground Block - 6 cavities)
(6)	Fuel Sender - Secondary Connector
(7)	Ground G400
(8)	Fuel Sender - Secondary
(9)	Fuel Tank - Secondary

Figure 10:

Figure 11:


(1)	Accelerator Pedal Position (APP) Sensor

Figure 12:


(1)	Trailer Park Brake Control (JE4)
(2)	Park Brake Control (JE4)
(3)	Gage Center
(4)	Inflatable Restraint I/P Module (AK5)
(5)	Auxiliary Power Outlets
(6)	Air Brake Pressure Gage (JE4)
(7)	Transfer Case Shift Control Switch (NP1)
(8)	Traction Control Switch (NW9)
(9)	Outside Heated Mirror Switch (DB6/DB8)
(10)	Exhaust Brake Switch (K40)
(11)	Rear Axle Driver Control Switch - Two Speed (HPZ/Automatic Transmission)
(12)	Inflatable Restraint I/P Module Disable Switch (AK5 w/o AQR)
(13)	Differential Lock Switch (HNB/HPL/HPN) or Inter-Axle Differential Lock Switch (Tandem Axle)
(14)	Switch
(15)	Air Suspension Dump Switch (G40/G45/GSJ)
(16)	Diesel Particulate Filter (DPF) (Diesel Only)
(17)	Marker Lamp Switch (RQ2 and U86 or RQ3)
(18)	High Idle Switch (UF3)/Power Take-Off (PTO) Switch
(19)	Air Cleaner Restriction Gage (UPM)
(20)	Automatic Transmission Fluid Temperature (TFT) Gage (Allison® LCT/UXT)
(21)	I/P Switchbank
(22)	HVAC Control Assembly (C40/C60)
(23)	Driver Information Center (DIC)
(24)	Radio (w/o UL5)
(25)	Inflatable Restraint Steering Wheel Module (AJ3/AK5)
(26)	Headlamp Switch
(27)	Turn Signal/Multifunction Switch
(28)	Instrument Panel Cluster (IPC)

Figure 13:


(1)	Fuel Sending Unit Connector
(2)	Fuel Tank Sender
(3)	Fuel Transfer Pump Connector
(4)	Fuel Transfer Pump
(5)	Back of Cab Crossmember
(6)	Fuel Tank Harness
(7)	C411
(8)	Rear Chassis Harness