Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1009 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)COMPONENT LOCATORENGINE ELECTRICAL COMPONENT VIEWS
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Engine Electrical Component Views
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Engine Electrical Component Views
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 1 | Battery - Right |
| 2 | Fuse Holder - Underhood |
| 3 | X127 |
| 4 | X108 |
| 5 | X107 |
| 6 | X123 (PTO) |
| 7 | Fuse Block - Underhood |
| 8 | X109 |
| 9 | Battery - Left (6A6/TP2) |
| 10 | Engine Control Module (ECM) |
| 11 | Transmission Control Module (TCM) |
| Callout | Component Name |
|---|---|
| 1 | Battery Current Sensor |
| 2 | Mega Fuse |
| 3 | A/C Low Pressure Switch (C67/CJ2) |
| 4 | Fuse Block - Underhood |
| 5 | Engine Control Module (ECM) |
| 6 | A/C Refrigerant Pressure Sensor (C67/CJ2) |
| 7 | Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor |
| 8 | Battery - Right |
| Callout | Component Name |
|---|---|
| 1 | Throttle Body |
| 2 | Manifold Absolute Pressure (MAP) Sensor |
| 3 | Evaporative Emission (EVAP) Canister Purge Solenoid Valve |
| 4 | Knock Sensor (KS) - 1 |
| 5 | Engine Block Heater |
| 6 | Engine Coolant Temperature (ECT) Sensor |
| 7 | Camshaft Position (CMP) Sensor |
| 8 | Generator |
| Callout | Component Name |
|---|---|
| 1 | Fuse Holder - Underhood |
| 2 | Run Relay |
| 3 | Auxiliary Battery Harness |
| 4 | Auxiliary Battery Relay |
| 5 | X122 |
| Callout | Component Name |
|---|---|
| 1 | Turbocharger Vane Position Control Solenoid Valve |
| 2 | Glow Plug Control Module (GPCM) |
| 3 | Fuel Rail Temperature (FRT) Sensor |
| 4 | Intake Air Temperature (IAT) Sensor 2 Connector |
| 5 | Fuel Pressure Regulator Connector |
| 6 | A/C Refrigerant Pressure Sensor (C67/CJ2) |
| 7 | Generator - Left (K76) |
| 8 | A/C Compressor Clutch (C67/CJ2) |
| 9 | Engine Coolant Temperature (ECT) Sensor 1 |
| 10 | Engine Coolant Temperature (ECT) Sensor 2 |
| 11 | Camshaft Position (CMP) Sensor |
| 12 | X127 |
| 13 | Generator - Right |
| 14 | Manifold Absolute Pressure (MAP) Sensor |
| 15 | Intake Air Heater (IAH) Module |
| 16 | Intake Air Temperature (IAT) Sensor 2 |
| 17 | Fuel Heater |
| 18 | A/C Low Pressure Switch (C67/CJ2) |
| Callout | Component Name |
|---|---|
| 1 | Generator |
| 2 | Throttle Body |
| 3 | Transmission |
| 4 | Park/Neutral Position (PNP) Switch |
| 5 | Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 |
| 6 | Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 |
| 7 | Knock Sensor (KS) - 1 |
| 8 | Engine Coolant Temperature (ECT) Sensor |
| 9 | A/C Compressor Clutch (C67/CJ2) |
| Callout | Component Name |
|---|---|
| 1 | Evaporative Emission (EVAP) Canister Purge Solenoid Valve |
| 2 | Throttle Body |
| 3 | Mass Air Flow (MAF) / Intake Air Temperature (IAT) Sensor |
| 4 | Camshaft Position (CMP) Sensor |
| 5 | G103 |
| 6 | Crankshaft Position (CKP) Sensor |
| 7 | Knock Sensor (KS) - 2 |
| 8 | Starter |
| 9 | Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 |
| 10 | Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 |
| 11 | Vehicle Speed Sensor (VSS) |
| Callout | Component Name |
|---|---|
| 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 Switch |
| 10 | Starter |
| 11 | Valve Lifter Oil Manifold (VLOM) Assembly |
| 12 | Engine Oil Pressure Sensor |
| Callout | Component Name |
|---|---|
| 1 | Fuel Injector 7 |
| 2 | Fuel Injector 5 |
| 3 | Fuel Injector 3 |
| 4 | Exhaust Gas Recirculation (EGR) Valve |
| 5 | Fuel Injector 1 |
| 6 | Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor |
| 7 | Intake Air Valve |
| 8 | Crankshaft Position (CKP) Sensor |
| 9 | Glow Plug 1 |
| 10 | G103 |
| 11 | G105 |
| 12 | Block Heater |
| 13 | Glow Plug 3 |
| 14 | Glow Plug 5 |
| 15 | Water In Fuel Sensor |
| 16 | Starter |
| 17 | Glow Plug 7 |
| Callout | Component Name |
|---|---|
| 1 | Battery - Right |
| 2 | A/C Low Pressure Switch (C67/CJ2) |
| 3 | A/C Compressor Clutch (C67/CJ2) |
| 4 | A/C Refrigerant Pressure Sensor (C67/CJ2) |
| 5 | Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor |
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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.