US Motor Works USEP3599M Fuel Pump Module Assembly

Electric Fuel Pump Module for GM Trucks

US Motor Works USEP3599M is an electric fuel pump module assembly for select Chevrolet Silverado 3500 and GMC Sierra 3500 applications. It includes a tank seal and wiring harness kit, and it is built for direct replacement service in the fuel delivery system.

Compatible With 2001-2003 Chevrolet Silverado 3500, Commercial Chassis (Federal), Primary Fuel Tank; 2001-2003 GMC Sierra 3500, Commercial Chassis (Federal), Primary Fuel Tank; and 2005 Chevrolet Silverado 3500 and 2005 GMC Sierra 3500, excluding Commercial Chassis.

Key Features

• Electric fuel pump module assembly for air and fuel delivery service
• Includes tank seal and wiring harness kit
• Application-specific fitment for select Silverado 3500 and Sierra 3500 models
• Cross-references Delphi FG0246 and FG0316 for the same application
• US Motor Works part number USEP3599M for catalog and service matching

Detailed Description

This fuel pump module assembly is intended for GM heavy-duty truck fuel system repair where the original module has failed or fuel delivery has become inconsistent. USEP3599M serves select Chevrolet Silverado 3500 and GMC Sierra 3500 models, including 2001-2003 Commercial Chassis (Federal) primary fuel tank applications and 2005 non-commercial chassis trucks. The included tank seal and wiring harness kit support a complete module replacement at the tank interface.

US Motor Works USEP3599M also cross-references Spectra Premium SP6612M and OE-style numbers used in the same applications, making it easier to verify the correct replacement during parts lookup.

What It Helps Fix

• Hard starting caused by weak or failed fuel delivery
• Engine stalling from inconsistent pump output
• Fuel pressure loss in the tank-mounted module
• Fuel gauge or electrical connection issues related to the module harness
• Service replacement for worn tank seal interfaces

Installation Notes and Tips

Confirm the vehicle year, make, model, and chassis configuration before ordering. This part fits 2001-2003 Chevrolet Silverado 3500 and GMC Sierra 3500 Commercial Chassis (Federal) primary fuel tank applications, plus 2005 Chevrolet Silverado 3500 and GMC Sierra 3500 excluding Commercial Chassis. Inspect the tank opening, electrical connector, and fuel lines before installation, and verify the module orientation matches the original unit.

Quality Assurance

US Motor Works supplies this electric fuel pump module as a cataloged replacement part for fuel system service. The part number USEP3599M is listed with direct interchange references to help confirm application matching during repair planning.