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 MANUALSCHEVROLET2010CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 56 (ENGINE CONTROLS AND FUEL - 6.6L (LGH) - SCHEMATIC AND ROUTING DIAGRAMS)
2010 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 56 (Engine Controls And Fuel - 6.6L (LGH) - Schematic And Routing Diagrams)
2010 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 56 (Engine Controls And Fuel - 6.6L (LGH) - Schematic And Routing Diagrams)
WARNING: This page is about a different variant/trim than selected.
- Schematic and Routing Diagrams
- Fuel Injection Line Routing Diagram
- Engine Controls Schematics
- Module Power, Ground, Serial Data and MIL
- 5V1 and Low Reference Bus(1 of 3)
- 5V2, 5V3 and 5V4, and Low Reference Bus (2 of 3)
- Low Reference Bus (3 of 3)
- Engine Data Sensors- Temperature, AI and MAF
- Engine Data Sensors- Pressure and WIF
- Engine Data Sensors- EGR and Turbocharger Controls
- Engine Data Sensors- Pedal Position and Injector Timing
- Engine Data Sensors- Glow Plug Controls and Intake Air Heater
- Engine Data Sensors- Nitrogen Oxide Sensors and Reductant Sensor Module
- Fuel Controls- Fuel Pump, Temperature and Pressure Controls
- Fuel Controls- Fuel Injectors
- Emissions Controls- Reductant System
- Controlled/Monitored Subsystem References
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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.