Powertrain Component Views. GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2009

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Powertrain Component Views

Figure 1:

Automatic Transmission - Allison® LCT


(1)	Automatic Transmission Input Shaft Speed (AT ISS) Sensor
(2)	Automatic Transmission Input Shaft Speed (AT ISS) Sensor Connector
(3)	Turbine Shaft Speed Sensor (TSS)
(4)	Turbine Shaft Speed Sensor (TSS) Connector
(5)	Vehicle Speed Sensor (VSS)
(6)	Vehicle Speed Sensor (VSS) Connector
(7)	Automatic Transmission (Allison® LCT)
(8)	Transmission Shift Selector

Figure 2:

Under the Throttle Body (LLY)


(1)	Engine Coolant Temperature (ECT) Sensor

Figure 3:

Front of Engine (L18)


(1)	Generator
(2)	Generator Assembly
(3)	Engine Harness
(4)	Generator Ring Terminal

Figure 4:

Front of Engine (LF8)


(1)	Exhaust Gas Recirculation (EGR) Cooler Temperature Sensor 1
(2)	Throttle Body
(3)	X129
(4)	Exhaust Gas Recirculation (EGR) Cooler Temperature Sensor 2
(5)	Engine Coolant Temperature (ECT) Sensor

Figure 5:

Front of Engine (LB7/LLY)


(1)	Generator Ring Terminal
(2)	Generator Connector
(3)	Generator
(4)	Generator Connector
(5)	Generator
(6)	Engine Harness
(7)	Generator Ring Terminal

Figure 6:

Manual Transmission


(1)	Rear Axle Driver Control Switch - Two Speed (HPZ) or Two Speed Rear Axle Control Valve (HR2/Manual Transmission)
(2)	Backup Lamp Switch
(3)	Vehicle Speed Sensor (VSS)

Figure 7:

Lower Back of Engine


(1)	Knock Sensor (KS) Bank 2
(2)	Engine Oil Level Switch
(3)	Starter Solenoid
(4)	Engine Chassis Harness

Figure 8:

G119 (LMM)


(1)	Exhaust Manifold
(2)	G119

Figure 9:

G120 (LMM)


(1)	Crankshaft Pulley
(2)	G120

Figure 10:

Top of Engine


(1)	Engine Chassis Harness
(2)	X110 (8 cavities - L18)
(3)	Engine Coolant Temperature (ECT) Sensor (L18)
(4)	Engine Coolant Temperature (ECT) Sensor Connector
(5)	X110 (8 cavities - L18)

Figure 11:

Rear of Engine Block


(1)	Engine Oil Pressure (EOP) Switch
(2)	Engine Harness
(3)	Engine Oil Pressure (EOP) Switch Connector
(4)	Crankshaft Position (CKP) Sensor Connector
(5)	G115
(6)	Heated Oxygen Sensor (HO2S) - Left Side
(7)	Crankshaft Position (CKP) Sensor

Figure 12:

Front Left of Engine


(1)	Camshaft Position (CMP) Sensor
(2)	Knock Sensor 1(KS1)
(3)	Knock Sensor Connector
(4)	Engine Harness
(5)	Camshaft Position (CMP) Sensor Connector

Figure 13:

Engine View - Upper Right


(1)	Engine Harness
(2)	Manifold Absolute Pressure (MAP) Sensor
(3)	Manifold Absolute Pressure (MAP) Sensor Connector
(4)	Engine
(5)	Ignition Coil Connector (Engine Side)
(6)	Throttle Actuator Control (TAC) Motor
(7)	Ignition Coil Connector (Harness Side)
(8)	Engine Coolant Temperature (ECT) Sensor Connector
(9)	Ignition Coil

Figure 14:

Front of the Engine Compartment


(1)	A/C Compressor Clutch (C60)
(2)	Throttle Position (TP) Sensor (part of the Throttle Body)
(3)	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(4)	Throttle Actuator (part of the Throttle Body)
(5)	A/C High Pressure Switch (C60)

Figure 15:

Top of Engine


(1)	Engine Harness
(2)	X111
(3)	X111
(4)	Fuel Rail Pressure Regulator

Figure 16:

Rear of Engine Block


(1)	Engine Oil Pressure (EOP) Switch
(2)	Engine Chassis Harness
(3)	Engine Oil Pressure (EOP) Switch Connector
(4)	Crankshaft Position (CKP) Sensor Connector
(5)	G115
(6)	Heated Oxygen Sensor (HO2S) Bank 1
(7)	Crankshaft Position (CKP) Sensor

Figure 17:

Right Side of Engine (LF8)


(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 18:

Left Side of Engine (LF8)


(1)	X122
(2)	Manifold Absolute Pressure (MAP) Sensor
(3)	X123
(4)	Engine Control Module (ECM) X2
(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)	X111
(12)	Fuel Rail Pressure (FRP) Sensor
(13)	Water in Fuel Sensor
(14)	Glow Plug Control Module
(15)	Exhaust Gas Recirculation (EGR) Valve

Figure 19:

Left Rear Engine View


(1)	Fuel Injector Connector X123 - to the fuel injector harness connector adapter 2
(2)	Glow Plug 5
(3)	Fuel Temperature Sensor
(4)	Glow Plug 6

Figure 20:

Top of Engine, Front, Under Valve Cover


(1)	Fuel Injector 1
(2)	Fuel Injector 2
(3)	X122 (8 cavities)
(4)	Fuel Injector 3
(5)	Glow Plug 3
(6)	Glow Plug Bus 2
(7)	Fuel Injector Harness Connector Adapter 1 (X122)
(8)	Glow Plug 2
(9)	Glow Plug Bus 1
(10)	Glow Plug 1

Figure 21:

Top of Engine, Rear, Under Valve Cover


(1)	Fuel Injector 4
(2)	X123 (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 (X123)
(9)	Glow Plug 4
(10)	Glow Plug Bus 1

Figure 22:

Top Left Side of Engine, Intake


(1)	Boost Pressure Sensor
(2)	Intake Manifold

Figure 23:

Top Center of Flywheel Housing


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

Figure 24:

Left Side of the Engine


(1)	Intake Air Temperature (IAT) Sensor
(2)	Turbocharger Vane Position (TVP) Sensor
(3)	Fuel Injector 8
(4)	Glow Plug 8
(5)	Fuel Injector 6
(6)	Glow Plug 6
(7)	Engine Oil Pressure (EOP) Sensor
(8)	Water-In-Fuel Sensor
(9)	Glow Plug 4
(10)	Fuel Injector 4
(11)	Engine Oil Level Switch
(12)	Glow Plug 2
(13)	Fuel Injector 2
(14)	Turbocharger Vane Position (TVP) Sensor Connector
(15)	Barometric Pressure (BARO) Sensor

Figure 25:

Right Side of the Engine


(1)	Fuel Injector 7
(2)	Fuel Injector 5
(3)	Fuel Injector 3
(4)	Fuel Rail Pressure (FRP) Sensor
(5)	Fuel Injector 1
(6)	Exhaust Gas Recirculation (EGR) Valve
(7)	Manifold Absolute Pressure (MAP) Sensor
(8)	Intake Air (IA) Heater
(9)	Glow Plug Controller
(10)	Crankshaft Position (CKP) Sensor
(11)	Glow Plug 1
(12)	Block Heater
(13)	Glow Plug 3
(14)	Starter
(15)	Glow Plug 5
(16)	Glow Plug 7

Figure 26:

Top of the Engine


(1)	Exhaust Gas Recirculation (EGR) Valve
(2)	Fuel Pump
(3)	Intake Air Temperature (IAT) Sensor
(4)	Turbocharger Vane Position (TVP) Control Solenoid Valve
(5)	Fuel Temperature Sensor
(6)	Camshaft Position (CMP) Sensor
(7)	Glow Plug Controller