Delphi FG0391 Fuel Pump Module Assembly

Reliable Fuel Pump Module Assembly for Chevrolet and GMC Trucks

The Delphi FG0391 fuel pump module assembly is designed to provide consistent fuel delivery for Chevrolet and GMC full-size pickup trucks. Engineered for in-tank installation, this electric fuel pump module supports flex fuel systems and includes essential components for efficient operation.

• Compatible with Chevrolet Silverado 1500, Silverado 1500 Classic, GMC Sierra 1500, and Sierra 1500 Classic
• 12.0-volt electric pump with a maximum pressure of 73 psi and system pressure of 59 psi
• Includes fuel level sender assembly and internal strainer for accurate fuel monitoring and filtration
• Equipped with a regulator and vapor pressure sensor to maintain optimal fuel system performance
• Features quick connect outlet type with 0.375-inch outside diameter and blade-type male terminals (4 terminals)
• Comes with gasket/seal and instruction sheet for proper installation

Technical Details and Features

The Delphi FG0391 fuel pump module assembly operates at 12 volts and delivers an average flow rating of 29 gallons per hour, suitable for flex fuel applications. Its internal strainer and included fuel level sender assembly ensure clean fuel delivery and accurate fuel gauge readings. The module features a quick connect outlet with three outlets, each with a 0.375-inch outside diameter, facilitating secure fuel line connections. The blade-type male terminals (four in total) provide reliable electrical connectivity. The pump’s resistance ranges from 250 ohms when empty to 40 ohms when full, with an average current draw of 7 amps. This assembly is designed for in-tank installation, improving fuel system efficiency and reducing noise.

Compatible Vehicles and Applications

This fuel pump module assembly is specifically compatible with the following models:

• Chevrolet Silverado 1500 and Silverado 1500 Classic
• GMC Sierra 1500 and Sierra 1500 Classic

It is intended for use in flex fuel systems, supporting vehicles that run on gasoline or ethanol blends. The module addresses common fuel delivery issues such as inconsistent fuel pressure, inaccurate fuel level readings, and fuel contamination.

Common Issues Addressed by Delphi FG0391

• Fuel pump failure causing engine stalling or no-start conditions
• Erratic or inaccurate fuel gauge readings due to faulty sender assembly
• Fuel pressure drops affecting engine performance and fuel efficiency
• Fuel contamination from debris, mitigated by the internal strainer
• Vapor lock or fuel system vapor pressure irregularities

Installation Notes and Tips

• Ensure vehicle compatibility with Chevrolet Silverado 1500, Silverado 1500 Classic, GMC Sierra 1500, or Sierra 1500 Classic before installation
• Follow the included instruction sheet carefully for proper installation and sealing
• Verify electrical connections using the blade-type male terminals and ensure secure quick connect fittings on the outlet
• Replace the gasket/seal to prevent fuel leaks and maintain system integrity
• Handle the fuel pump module assembly carefully to avoid damage to the internal strainer and sender assembly

Quality Assurance and Warranty

Delphi fuel pump modules are manufactured to meet OEM specifications for durability and performance. The FG0391 is a standard replacement grade part designed to restore proper fuel delivery and system function. It includes a regulator and vapor pressure sensor to maintain consistent fuel pressure and emissions compliance. Warranty coverage details should be confirmed at the point of purchase, ensuring peace of mind with your replacement fuel pump module.