Fuel Pump for 1999-2004 Chevy Silverado & GMC Sierra - With Sending

In this review of the LONGKEES fuel pump module, the bottom line is simple: this unit is aimed at owners of 1999-2004 Chevrolet Silverado and GMC Sierra trucks who need a direct-replacement pump that restores proper fuel delivery. The reviewer found it best for mechanics or DIYers who want an OE-style fit with an integrated sending unit and fuel pressure sensor, because the assembly matches common OEM part numbers and is designed to return reliable starting and steady fuel pressure under load.

Key Features

• Fitment: Direct fit for 1999-2004 Chevrolet Silverado and GMC Sierra 1500, 1500HD, 2500, 2500HD and 3500 models, helping ensure proper installation without modifications.
• Integrated components: Includes the sending unit and fuel pressure sensor so the pump restores both fuel delivery and system monitoring in a single replacement part.
• OE compatibility: Replaces OE numbers such as E3500M, MU1757 and FG0407, which simplifies part matching for those familiar with factory references.
• Construction: Built with a corrosion-resistant housing and reinforced internals to cope with underbody exposure and expected heat from the fuel tank environment.
• Performance goal: Engineered to meet factory fuel flow and pressure targets to reduce hard starts and minimize fuel starvation during acceleration.

Who It's For

The module is well suited to owners restoring fuel system performance on late 1990s and early 2000s Silverado or Sierra trucks, particularly those who prefer a plug-and-play replacement that includes the sending unit and pressure sensor. It is also a practical choice for independent shops and experienced DIYers who can handle in-tank pump replacement and want parts that list direct OE cross references.

Those who should look elsewhere include drivers seeking an upgraded high-flow racing pump or a long-term lifetime warranty; some purchasers report mixed quality and potential durability concerns, so if absolute long-term reliability or dealer-backed warranty is essential, a factory remanufactured or OEM-sourced assembly may be a safer choice.

Pros & Cons

Pros

• Good fit and installation ease for compatible 1999-2004 Silverado and Sierra trucks.
• Includes sending unit and fuel pressure sensor for a complete replacement of monitoring and delivery functions.
• Matches common OE part numbers to simplify ordering and compatibility checks.

Cons

• Quality reports are mixed and some users have experienced premature failures, so longevity may vary.
• There are occasional reports of fuel gauge or sensor-related issues that may require troubleshooting.

Specifications

Our Verdict

The LONGKEES fuel pump module is a practical, value-oriented replacement for 1999-2004 Silverado and Sierra owners who need a complete in-tank assembly with sending unit and pressure sensor. It delivers good fit and installation convenience and restores expected fuel delivery, but mixed reports about long-term durability mean buyers should be prepared for variable lifespan and consider warranty options if longevity is the top priority.

Frequently Asked Questions

Does this pump include the fuel level sending unit?
Yes, the module ships with the integrated sending unit and fuel pressure sensor for a full replacement.

Will it fit my 2003 Silverado 1500 with a 5.3L engine?
Yes, the unit is listed to fit 1999-2004 Silverado and Sierra trucks with 5.3L engines and related model variants.

Are there known issues to watch for after installation?
Some customers report mixed quality and occasional fuel gauge or sensor problems, so verify sensor connections and gauge operation after installation and retain return/warranty information.