Chevrolet Express 3500 water in fuel issue after prolonged inactivity and request for fuel filter location on Chevrolet Express 3500

Some Chevrolet Express 3500 owners report experiencing issues with water in the fuel after prolonged inactivity, which can lead to fuel dilution and potential corrosion of fuel system components. These problems may arise if the fuel filter is not properly maintained, as water can accumulate and affect performance. Owners are advised to locate and drain the fuel filter to check for water presence, as detecting water necessitates prompt action to avoid further complications. Additionally, inspecting the water separator is crucial, especially for those with a Duramax diesel engine, as it helps prevent water from entering the engine. If water is found, replacing the fuel filter and cleaning the housing thoroughly is essential to prevent future contamination. Some owners also report persistent water in fuel warnings, which may indicate sensor issues requiring further diagnostics. Regular maintenance is recommended to mitigate these issues effectively.