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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWSPOWERTRAIN COMPONENT VIEWS
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Powertrain Component Views

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Powertrain Component Views
Fig 1: Front Of Engine Component Views (4.3L)
GM886060Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Generator
2 A/C Compressor Clutch Connector (C60)
3 Crankshaft Position (CKP) Sensor Connector
Fig 2: Engine Harness - Right Side Of Engine Routing (4.3L)
GM882666Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Central Sequential Fuel Injection (Central SFI) Connector
2 Manifold Air Pressure (MAP) Sensor Connector
3 Ignition Control Module (ICM) Connector
4 Generator Connector
5 S102
6 Ignition Coil Connector
7 Evaporative Emission (EVAP) Canister Purse Solenoid Connector
Fig 3: Engine Harness - Left Side Of Engine Routing (4.3L)
GM882655Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 S101
2 A/C Compressor Clutch Connector (C60)
3 Throttle Position (TP) Sensor Connector
4 Idle Air Control (IAC) Valve Connector
5 A/C High Pressure Switch Connector (C60)
Fig 4: Component View - Left Rear Of Engine (4.3L/5.3L)
GM886062Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 A/C High Pressure Switch Connector (C60)
2 Engine Coolant Temperature (ECT) Sensor Connector
Fig 5: Component View - Engine Harness - Back Of Engine (4.3L)
GM882677Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G102
2 Camshaft Position (CMP) Sensor Connector
3 G103
4 Engine Oil Pressure (EOP) Sensor Connector
5 Knock Sensor (KS) Connector
6 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector
Fig 6: Rear Of Engine Component View (4.3L)
GM1226739Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 7: Component View - Right Side Of Engine (4.8L, 5.3L, 6.0L)
GM886066Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Crankshaft Position (CKP) Sensor Connector
2 A/C High Pressure Switch Connector (C60)
3 A/C Compressor Clutch Connector (C60)
4 Engine Oil Level Switch Connector
5 Starter Motor
Fig 8: Engine Harness - Left Side Of Engine Routing (4.8L/5.3L/6.0L)
GM882686Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 1 Connector
2 Fuel Injector 3 Connector
3 Fuel Injector 5 Connector
4 S101
5 X103
6 S102
7 Fuel Injector 7 Connector
8 Ignition Coil/Module 7 Connector
9 Ignition Coil/Module 5 Connector
10 X126
11 Ignition Coil/Module 3 Connector
12 Engine Coolant Temperature (ECT) Sensor Connector
13 Ignition Coil/Module 1 Connector
Fig 9: Engine Harness - Right Side Of Engine Routing (4.8L/5.3L/6.0L)
GM1226716Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 8 Connector
2 Fuel Injector 6 Connector
3 Fuel Injector 4 Connector
4 Fuel Injector 2 Connector
5 Ignition Coil/Module 2 Connector
6 Ignition Coil/Module 4 Connector
7 Ignition Coil/Module 6 Connector
8 X127
9 Ignition Coil/Module 8 Connector
Fig 10: Engine Harness - Top Of Engine Routing (4.8L/5.3L/6.0L)
GM882693Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Manifold Absolute Pressure (MAP) Sensor Connector
2 S102
3 S101
4 X103
5 Evaporative Emission (EVAP) Canister Purge Solenoid Valve
6 Throttle Body
Fig 11: View Of Knock Sensors (4.8L, 5.3L, 6.0L)
GM198593Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Knock Sensor (KS) 1
2 Knock Sensor (KS) 2
Fig 12: Right Side Of Engine (6.6L)
GM1598023Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 7
2 Glow Plug 7
3 Fuel Injector 5
4 Glow Plug 5
5 Fuel Injector 3
6 Glow Plug 3
7 Fuel Injector 1
8 Glow Plug 1
9 Camshaft Position (CMP) Sensor
10 Crankshaft Position (CKP) Sensor
11 Starter
12 Starter Solenoid
Fig 13: Left Side Of Engine (6.6L)
GM1598024Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Glow Plug 2
2 Fuel Injector 2
3 Fuel Injector 4
4 Glow Plug 4
5 Fuel Injector 6
6 Glow Plug 6
7 Fuel Injector 8
8 Glow Plug 8
9 Engine Oil Pressure (EOP) Sensor
10 Engine Oil Level Switch
Fig 14: Engine Harness - Top Of Engine (LLY)
GM1605421Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X112
2 Fuel Rail Pressure (FRP) Sensor
3 Turbocharger Vane Position Control Solenoid Valve
4 Turbocharger Vane Position Sensor
5 Glow Plug Control Module (GPCM)
6 Fuel Rail Temperature (FRT) Sensor
7 Intake Air Temperature (IAT) Sensor 2
8 X111
9 X110
10 X107
11 Fuel Pressure Regulator
12 Engine Coolant Temperature (ECT) Sensor
13 Intake Air Heater (IAH) Module
14 Manifold Absolute Pressure (MAP) Sensor
15 X108
16 Exhaust Gas Recirculation (EGR) Valve
Fig 15: Engine - Right Side (6.6L)
GM1831325Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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 (AI) Flow 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
Fig 16: Left Side Of Engine (6.6L)
GM1831331Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X110
2 X111
3 Intake Air Temperature (IAT) Sensor 2
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 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
Fig 17: Top Of Engine (6.6L)
GM1842295Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X111
2 Engine Coolant Temperature (ECT) Sensor 2
3 Engine Coolant Temperature (ECT) Sensor 1
4 Fuel Pressure Regulator
Fig 18: Upper Engine (6.6L)
GM1831320Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor
2 Throttle Body
3 Intake Air (AI) Flow Valve
4 Intake Air Heater (IAH) Module
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
Fig 19: Top Rear Of Engine (6.6L)
GM1842559Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Rail Pressure (FRP) Sensor
2 X112
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.