Delphi FG0403 Fuel Pump Module Assembly

Fuel Pump Module Assembly for GM Cutaway Vans

The Delphi FG0403 fuel pump module assembly is a standard replacement for select Chevrolet Express 3500 and GMC Savana 3500 applications with a 35 gallon tank. Built from Delphi’s OE heritage and fuel system experience, it combines the pump, sender, regulator, seal, and strainer in one in-tank assembly for direct service replacement.

Compatible With 2004-2005 Chevrolet Express 3500 and 2004-2005 GMC Savana 3500, this module is specified for Federal Emission System vehicles with the listed RPO codes and cutaway chassis configurations.

Key Features

• Delphi FG0403 fuel pump module assembly for in-tank fuel delivery
• Electric pump with 12V operation and blade-style terminals
• Includes fuel level sender assembly, regulator, seal, and strainer
• Quick-connect outlet design with two outlets and 0.375 in. outlet outside diameter
• Standard replacement construction for flex-fuel applications
• Maximum pressure rated at 73 psi with a 54 psi system pressure specification
• Average flow rating of 28 and average current draw of 11

Detailed Description

Delphi FG0403 is engineered as a complete fuel pump module assembly for vehicles that use an in-tank electric pump and integrated fuel level sender. The module is built around Delphi’s OE-focused fuel system knowledge, with a design that supports consistent fuel delivery, accurate tank level reporting, and regulated pressure control. It is a direct service part for select Chevrolet Express 3500 and GMC Savana 3500 models, including 2004-2005 Chevrolet Express 3500 and 2004-2005 GMC Savana 3500 with the specified 35 gallon tank and cutaway chassis requirements. This part cross-references ACDelco 19133510 and Bosch M10029 for the same application.

FG0403 is a practical choice when replacing a worn pump module on a Chevrolet Express 3500 fuel pump module assembly or GMC Savana 3500 fuel pump module assembly application. The package includes the fuel pump module assembly with float arm, seal, and instruction sheet, and it uses a quick-connect outlet with a built-in regulator and internal strainer.

What It Helps Address

• Hard starting caused by weak fuel pressure
• Engine stalling from inconsistent in-tank fuel delivery
• Incorrect fuel gauge readings from a failing sender
• Fuel pressure regulation issues in the module assembly
• Poor drivability related to a restricted or worn pump and strainer

Installation Notes and Tips

Before installing a replacement fuel pump module, clean the fuel tank to reduce the risk of contamination entering the new pump. Delphi recommends using fuel tank cleaning kit FC01 for the listed applications. Verify the tank size, RPO codes, emission system, and cutaway chassis configuration before installation. Confirm connector style, outlet type, and sender resistance specifications match the original unit.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplies components to major automakers, with OE-based engineering carried into its aftermarket fuel system parts. FG0403 is built as a standard replacement fuel pump module assembly for the listed Chevrolet and GMC applications.