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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 97 (ENGINE CONTROLS AND FUEL - 4.3L (LV1) - DESCRIPTION AND OPERATION)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Section 97 (Engine Controls And Fuel - 4.3L (LV1) - Description And Operation)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Section 97 (Engine Controls And Fuel - 4.3L (LV1) - Description And Operation)
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Description and Operation
- Engine Control Module Description
- Throttle Actuator Control (TAC) System Description
- Fuel System Description
- Fuel System Overview
- E85 Flex Fuel Description
- Switching Between Gasoline and E85
- Electronic Returnless Fuel System
- Chassis Control Module
- Fuel Pressure Sensor
- Fuel Tank
- Fuel Fill Pipe
- Fuel Filler Cap
- Fuel Tank Fuel Pump Module
- Fuel Level Sensor
- Fuel Pump
- Pressure Relief Regulator Valve
- Fuel Strainer
- Primary Jet Pump
- Nylon Fuel Pipes
- Quick-Connect Fittings
- Fuel Feed Front Pipe Check Valve
- High Pressure Fuel Pump
- Fuel Rail Assembly
- Fuel Injectors
- Fuel Rail Pressure Sensor
- Fuel Metering Modes of Operation
- Starting Mode
- Clear Flood Mode
- Run Mode
- Acceleration Mode
- Deceleration Mode
- Battery Voltage Correction Mode
- Fuel Cutoff Mode
- Fuel Trim
- Evaporative Emission Control System Description
- Electronic Ignition System Description
- Camshaft Actuator System Description
- Speed Limiting Description
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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.