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 1339 (ENGINE CONTROLS AND FUEL - 3.6L - INTRODUCTION (2 OF 2))
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Section 1339 (Engine Controls And Fuel - 3.6L - Introduction (2 Of 2))
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Section 1339 (Engine Controls And Fuel - 3.6L - Introduction (2 Of 2))
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Repair Instructions
- Engine Control Module Replacement
- Throttle Learn
- Engine Coolant Temperature Sensor Replacement
- Mass Airflow Sensor/Intake Air Temperature Sensor Replacement
- Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
- Heated Oxygen Sensor Replacement - Bank 1 Sensor 2
- Heated Oxygen Sensor Replacement - Bank 2 Sensor 1
- Heated Oxygen Sensor Replacement - Bank 2 Sensor 2
- Accelerator Pedal Position Sensor Replacement
- Throttle Body Assembly Replacement (LP1, LY7)
- Throttle Body Inspection and Cleaning
- Fuel Pressure Relief (With CH 48027 - LP1, LY7)
- Fuel Pressure Relief (Without CH 48027 - LP1, LY7)
- Fuel Pressure Relief (With High Pressure Pump - LLT)
- Fuel Pressure Gage Installation and Removal (LP1, LY7)
- Metal Collar Quick Connect Fitting Service
- Plastic Collar Quick Connect Fitting Service
- Fuel Filter Replacement
- Fuel Tank Draining
- Fuel Tank Replacement
- Fuel Tank Pressure Sensor Replacement
- Filler Tube Replacement
- Primary Fuel Tank Module Replacement
- Secondary Fuel Tank Module Replacement
- Primary Fuel Level Sensor Replacement
- Fuel Pressure Sensor Replacement (LLT)
- Fuel Hoses/Pipes Replacement - Filter to Tank
- Fuel Hose/Pipes Replacement - Chassis (LP1, LY7)
- Fuel Feed Pipe Replacement (LLT)
- Fuel System Cleaning (LP1, LY7)
- Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LLT)
- Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LLT)
- Fuel Injection Fuel Rail Crossover Tube Replacement (LLT)
- Fuel Feed Intermediate Pipe Replacement (LLT)
- Fuel Pipe Shield Replacement (LLT)
- Fuel Pump Replacement (LLT)
- Fuel Injector and Fuel Rail Replacement (LP1, LY7)
- Fuel Injector Replacement (LLT)
- Evaporative Emission Canister Purge Solenoid Valve Replacement
- Evaporative Emission Canister Vent Solenoid Valve Replacement
- Evaporative Emission Hoses/Pipes Replacement - Chassis/Canister
- Evaporative Emission Canister Replacement
- Evaporative Emission Canister Filter Replacement
- Evaporative Emission System Cleaning
- Ignition Coil Replacement - Bank 1 (LP1, LY7)
- Ignition Coil Replacement - Bank 2 (LP1, LY7)
- Spark Plug Inspection
- Spark Plug Replacement
- Crankshaft Position Sensor Replacement
- Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)
- Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (LP1, LY7)
- Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust
- Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake
- Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake
- Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust
- Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake (LP1, LY7)
- Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)
- Knock Sensor Replacement - Bank 1
- Knock Sensor Replacement - Bank 2
- Intake Manifold Runner Control Solenoid Replacement (LP1, LY7)
- Air Cleaner Element Replacement
- Air Cleaner Assembly Replacement
- Air Cleaner Inlet Duct Replacement
- Description and Operation
- Air Intake System Description
- Camshaft Actuator System Description
- Electronic Ignition (EI) System Description
- Engine Control Module Description
- Notes
- ECM Function
- EEPROM
- Theft Deterrent System Frequency Code Programming
- KS Module
- Data Link Connector (DLC)
- Malfunction Indicator Lamp (MIL)
- ECM Service Precautions
- Emissions Diagnosis For State I/M Programs
- Aftermarket (Add-On) Electrical And Vacuum Equipment
- Electrostatic Discharge (ESD) Damage
- Emissions Control Information Label
- Underhood Inspection
- Basic Knowledge Required
- Evaporative Emission Control System Description
- Fuel System Description (w/LLT)
- Fuel System Overview
- Fuel Tank
- On-Board Refueling Vapor Recovery (ORVR) System
- Fuel Tank Filler Pipe
- Fuel Filler Cap
- Modular Fuel Sender
- Fuel Pump
- Fuel Sender Strainers
- In-Line Fuel Filter
- EVAP Lines and Hoses
- Fuel Pressure Regulator
- High Pressure Fuel Pump
- Fuel Rail Assembly
- Fuel Injectors
- Fuel Rail Fuel Pressure Sensor
- Fuel Pump Relay
- Engine Fueling
- Sequential Fuel Injection (SFI)
- Clear Flood Mode
- Run Mode
- Acceleration Mode
- Deceleration Mode
- Battery Voltage Correction Mode
- Fuel Shut-Off Mode
- Knock Sensor (KS) System Description
- Throttle Actuator Control (TAC) 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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.