Powertrain Component Views. Chevrolet Express

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2008 🢒 Express - AWD 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Powertrain Component Views

Figure 1:

Front of the Engine (4.3L)


(1)	Generator
(2)	A/C Compressor Clutch Connector (C60)
(3)	Crankshaft Position (CKP) Sensor

Figure 2:

Right Side of the Engine (4.3L)


(1)	Central Sequential Fuel Injection (Central SFI) Connector
(2)	Manifold Absolute Pressure (MAP) Sensor Connector
(3)	Ignition Control Module (ICM) Connector
(4)	Generator Connector
(5)	J102
(6)	Evaporative Emission (EVAP) Canister Purge Solenoid Valve Connector

Figure 3:

Left Rear of the Engine (4.3L)


(1)	Engine Coolant Temperature (ECT) Sensor

Figure 4:

Rear of the Engine (4.3L/5.3L)


(1)	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1
(2)	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1
(3)	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2
(4)	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2
(5)	Park/Neutral Position (PNP) Switch

Figure 5:

Oxygen Sensors (4.8L/6.0L)


(1)	X128 (Cutaway)
(2)	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1 Connector
(3)	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2 Connector
(4)	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2 Connector
(5)	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1 Connector

Figure 6:

Lower Right of Engine (4.3L)


(1)	Knock Sensor (KS) 2

Figure 7:

Front of the Engine Components (4.8L/5.3L/6.0L)


(1)	Throttle Body
(2)	Manifold Absolute Pressure (MAP) Sensor
(3)	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(4)	Knock Sensor (KS) 1
(5)	Engine Coolant Temperature (ECT) Sensor
(6)	Camshaft Position (CMP) Sensor
(7)	Generator

Figure 8:

Left Front Side of the Engine Components (4.8L/5.3L/6.0L)


(1)	Camshaft Position (CMP) Actuator Solenoid Valve (6.0L)
(2)	Camshaft Position (CMP) Sensor

Figure 9:

Right Side of the Engine Components (4.8L/5.3L/6.0L)


(1)	Ignition Coil 8
(2)	Ignition Coil 6
(3)	Ignition Coil 4
(4)	Manifold Absolute Pressure (MAP) Sensor
(5)	Throttle Body
(6)	Ignition Coil 2
(7)	Knock Sensor (KS) 2
(8)	Crankshaft Position (CKP) Sensor
(9)	Engine Oil Level (EOL) Switch
(10)	Starter
(11)	Engine Oil Pressure (EOP) Sensor

Figure 10:

Right Side of the Engine (4.8L/ 5.3L/ 6.0L)


(1)	Crankshaft Position (CKP) Sensor Connector
(2)	A/C Compressor Clutch Connector (C60)
(3)	Engine Oil Level (EOL) Switch Connector
(4)	Starter Motor

Figure 11:

Upper Left Side of the Engine (4.8L/ 5.3L/ 6.0L)


(1)	Fuel Injector 1 Connector
(2)	Fuel Injector 3 Connector
(3)	Fuel Injector 5 Connector
(4)	J101
(5)	J102
(6)	Fuel Injector 7 Connector
(7)	Ignition Coil 7 Connector
(8)	Ignition Coil 5 Connector
(9)	X126
(10)	Ignition Coil 3 Connector
(11)	Engine Coolant Temperature (ECT) Sensor Connector
(12)	Ignition Coil 1 Connector

Figure 12:

Upper Right Side of the Engine (4.8L/ 5.3L/ 6.0L)


(1)	Fuel Injector 8 Connector
(2)	Fuel Injector 6 Connector
(3)	Fuel Injector 4 Connector
(4)	Fuel Injector 2 Connector
(5)	Ignition Coil 2 Connector
(6)	Ignition Coil 4 Connector
(7)	Ignition Coil 6 Connector
(8)	X127
(9)	Ignition Coil 8 Connector

Figure 13:

Top of the Engine (4.8L/5.3L/6.0L)


(1)	Manifold Absolute Pressure (MAP) Sensor Connector
(2)	J102
(3)	J101
(4)	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(5)	Throttle Body

Figure 14:

Lower Right of Engine (4.8L/5.3L/6.0L)


(1)	Knock Sensor (KS) 2

Figure 15:

Engine - Right Side (6.6L)


(1)	Fuel Injector 7
(2)	X112
(3)	Fuel Injector 5
(4)	Fuel Injector 3
(5)	Exhaust Gas Recirculation (EGR) Valve
(6)	Fuel Injector 1
(7)	Generator
(8)	Intake Air Valve
(9)	X108
(10)	Camshaft Position (CMP) Sensor
(11)	Crankshaft Position (CKP) Sensor
(12)	G108
(13)	G104
(14)	Starter Motor
(15)	Glow Plug 1
(16)	Glow Plug 3
(17)	Glow Plug 5
(18)	Glow Plug 7

Figure 16:

Left Side of the Engine (6.6L)


(1)	X110
(2)	X111
(3)	Intake Air Temperature (IAT) Sensor
(4)	Fuel Injector 4
(5)	Glow Plug Control Module (GPCM)
(6)	Fuel Injector 6
(7)	Fuel Injector 8
(8)	Glow Plug 8
(9)	Glow Plug 6
(10)	Engine Oil Level (EOL) Switch
(11)	Engine Oil Pressure (EOP) Sensor
(12)	G107
(13)	G102
(14)	G103
(15)	Glow Plug 4
(16)	Glow Plug 2
(17)	Fuel Injector 2
(18)	X101
(19)	A/C Compressor

Figure 17:

Top of Engine (6.6L)


(1)	X111
(2)	Engine Coolant Temperature (ECT) Sensor
(3)	Fuel Pressure Regulator

Figure 18:

Upper Engine (6.6L)


(1)	Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
(2)	Throttle Body
(3)	Intake Air Valve
(4)	Intake Air Heater (IAH)
(5)	Manifold Absolute Pressure (MAP) Sensor
(6)	Turbocharger
(7)	Turbocharger Vane Position Control Solenoid Valve
(8)	Turbocharger Vane Position Sensor
(9)	Fuel Rail Temperature (FRT) Sensor
(10)	X111
(11)	X110

Figure 19:

Top Rear of Engine (6.6L)


(1)	Fuel Rail Pressure (FRP) Sensor
(2)	X112

Figure 20:

Automatic Transmission Internal Electronic Components (4L60-E)


(36)	Automatic Transmission Output Shaft Speed (OSS) Sensor
(66)	Torque Converter Clutch (TCC) Solenoid Valve
(69)	Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
(367a)	1-2 Shift Solenoid (SS) Valve
(367b)	2-3 Shift Solenoid (SS) Valve
(377)	Pressure Control (PC) Solenoid Valve
(394)	3-2 Shift Solenoid (SS) Valve
(396)	Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Valve

Figure 21:

Automatic Transmission Internal Electronic Components (4L80-E)


(22a)	Automatic Transmission Input Shaft Speed (ISS) Sensor
(22b)	Automatic Transmission Output Shaft Speed (OSS) Sensor
(34)	Automatic Transmission Fluid Temperature (TFT) Sensor
(40)	Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
(311)	2-3 Shift Solenoid (SS) Valve
(313)	1-2 Shift Solenoid (SS) Valve
(320)	Pressure Control (PC) Solenoid Valve
(323)	Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Valve