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 G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2))
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 5 (Engine Control System & Fuel System - 6.6L (LMM) - Introduction (2 Of 2))
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 5 (Engine Control System & Fuel System - 6.6L (LMM) - Introduction (2 Of 2))
WARNING: This page is about a different variant/trim than selected.
- Specifications
- Temperature Versus Resistance (EGR Temperature Sensors)
- Temperature Versus Resistance (Fuel Temperature Sensor)
- Temperature Versus Resistance (IAT Sensor 1)
- Temperature Versus Resistance (ECT Sensors)
- Temperature Versus Resistance (IAT Sensor 2)
- Temperature Versus Resistance (EGT Sensors)
- Altitude Versus Barometric Pressure
- Fastener Tightening Specifications
- Fuel System Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Repair Instructions
- Engine Control Module Replacement
- High Idle Switch Programming
- Fuel Injector Flow Rate Programming
- Engine Coolant Temperature Sensor Replacement
- Mass Airflow Sensor/Intake Air Temperature Sensor Replacement
- Intake Air Temperature (IAT) Sensor 2 Replacement
- Intake Air Valve Replacement
- Intake Air Heater Replacement
- Manifold Absolute Pressure Sensor Replacement
- Accelerator Pedal Position Sensor Replacement
- Metal Collar Quick Connect Fitting Service
- Plastic Collar Quick Connect Fitting Service
- Fuel System Priming
- Primary Fuel Filter Replacement
- Fuel Filter Replacement
- Fuel Filter Bracket Replacement
- Secondary Fuel Filter Bracket Replacement
- Water in Fuel Indicator Sensor Replacement
- Water-in-Fuel Draining
- Fuel Tank Draining
- Fuel Tank Replacement (Diesel)
- Fuel Level Sensor Replacement
- Fuel Pump Replacement
- Fuel Sender Assembly Replacement
- Fuel Cooler Inlet Hose Replacement
- Fuel Hose/Pipes Replacement - Chassis
- Fuel Injection Fuel Return Pipe Replacement - Left Side
- Fuel Injection Fuel Return Pipe Replacement - Right Side
- Fuel Feed Pipe Replacement
- Fuel Return Pipe Replacement
- Fuel Rail Fuel Feed Pipe Replacement - Right Side
- Fuel Rail Fuel Feed Pipe Replacement - Left Side
- Fuel Injection Fuel Feed Pipe Replacement - Right Side
- Fuel Injection Fuel Feed Pipe Replacement - Left Side
- Fuel Cooler Replacement
- Fuel Tank Filler Hose Replacement
- Fuel System Cleaning
- Fuel Injection Fuel Rail Assembly Replacement - Bank 1
- Fuel Injection Fuel Rail Assembly Replacement - Bank 2
- Fuel Pressure Regulator Replacement
- Fuel Pressure Relief Valve Replacement
- Fuel Injection Pump Replacement
- Fuel Injector Replacement (Left)
- Fuel Injector Replacement (Right)
- Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement
- Fuel Temperature Sensor Replacement
- Glow Plug Replacement - Bank 1
- Glow Plug Replacement - Bank 2
- Glow Plug Control Module Replacement
- Crankshaft Position Sensor Replacement
- Camshaft Position Sensor Replacement
- Exhaust Gas Recirculation Valve Replacement
- Exhaust Gas Recirculation Valve Cooler Replacement
- Exhaust Gas Recirculation Valve Temperature Sensor Replacement - Position 1
- Exhaust Gas Recirculation Valve Temperature Sensor Replacement - Position 2
- Exhaust Pressure Differential Sensor Replacement
- Exhaust Pressure Differential Sensor Pipe Replacement
- Exhaust Temperature Sensor Replacement - Position 1
- Exhaust Temperature Sensor Replacement - Position 2
- Turbocharger Control Solenoid Valve Replacement
- Turbocharger Vane Position Sensor Replacement
- Turbocharger Learn
- Air Cleaner Element Replacement
- Air Cleaner Assembly Replacement
- Air Cleaner Outlet Duct Replacement
- Air Intake Pipe Replacement
- Description and Operation
- Accelerator Pedal Position System Description
- Diesel Particulate Filter (DPF) System Description
- Engine Control Module Description
- Exhaust Gas Recirculation (EGR) System Description
- Fuel System Description
- Glow Plug System Description
- Intake Air Heater System Description
- Manual High Idle System Description
- Turbocharger System Description
- Special Tools and Equipment
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.