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 CARSECTION 538 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L LMM - INTRODUCTION)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 538 (Engine Control System & Fuel System - 6.6L LMM - Introduction)
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 538 (Engine Control System & Fuel System - 6.6L LMM - Introduction)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Notes
- Temperature Versus Resistance (ECT Sensors)
- Temperature Versus Resistance (EGR Temperature Sensors)
- Temperature Versus Resistance (EGT Sensors)
- Temperature Versus Resistance (Fuel Temperature Sensor)
- Temperature Versus Resistance (IAT Sensor 1)
- Temperature Versus Resistance (IAT Sensor 2)
- Altitude Versus Barometric Pressure
- Fastener Tightening Specifications
- Fuel System Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Repair Instructions
- Notes
- Engine Control Module Replacement
- High Idle Switch Programming
- Fuel Injector Flow Rate Programming
- Diesel Particulate Filter (DPF) Service Regeneration
- Diesel Particulate Filter (DPF) Regeneration Enable
- Engine Coolant Temperature Sensor Replacement
- Mass Airflow Sensor with 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
- Fuel Strainer Bowl Replacement
- Water-in-Fuel Draining
- Fuel Tank Draining (without L59)
- Fuel Tank Draining (with L59)
- Fuel Tank Replacement
- 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 Injection Fuel Feed Front Pipe Replacement - Right Side
- Fuel Injection Fuel Feed Front 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
- Engine Idle Control System Description
- Exhaust Gas Recirculation (EGR) System Description
- Fuel System Description
- Glow Plug System Description
- Intake Air Heater System Description
- Turbocharger System Description
- Special Tools and Equipment
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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.