Is Your GM Truck or SUV Stalling, Hesitating, or Refusing to Start?
If your 2007-2009 GMC Sierra 1500, Chevy Silverado, Tahoe, or other compatible GM vehicle is experiencing frustrating fuel delivery issues, a failing Fuel Pump Control Module (FPCM) is a very common culprit. This critical component, also known as a Fuel System Control Module (FSCM), is responsible for precisely managing the voltage sent to your in-tank fuel pump. When it fails, it can leave you stranded with a vehicle that cranks but won’t start, or cause dangerous stalling and hesitation while driving. Don’t just replace the fuel pump—diagnose the system correctly and replace the component that’s actually at fault.
This is a direct-fit replacement Fuel Pump Control Module for part number 25866052 and other compatible part numbers. The best part? It arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This eliminates the need for an expensive trip to the dealership for programming, making this a true plug-and-play solution that saves you both time and money. We flash the module with the latest GM-released software, ensuring optimal performance and reliability for your fuel system.
From the Diagnostic Bay
I once had a 2008 Silverado 1500 towed in with a classic ‘crank, no start’ complaint. The owner had already spent a weekend dropping the fuel tank and replacing the fuel pump, only to have the exact same problem. He was frustrated and out several hundred dollars. After hooking up my scan tool, I noticed I couldn’t communicate with the FPCM and there was no fuel pressure at the rail. A quick check of the wiring confirmed power and ground to the module, which is conveniently located on the driver’s side frame rail. The module itself was dead. We installed one of these pre-programmed modules, and the truck fired up on the first try. It’s a textbook example of why proper diagnosis is key and how a failing FPCM can perfectly mimic a bad fuel pump.
Diagnosing a Faulty Sierra 1500 Fuel Pump Module
The FPCM on these GM trucks is notorious for failure due to its mounting location on the frame rail, where it’s exposed to water, salt, and road debris. This leads to corrosion of the housing and internal electronics. If you’re experiencing any of the following symptoms, your FPCM should be the first component you inspect.
Common Symptoms of a Bad FPCM:
- âś” Engine cranks but will not start.
- âś” Stalling, especially under load or during acceleration.
- âś” Rough idle or engine hesitation.
- âś” Reduced engine power and poor fuel economy.
- âś” Check Engine Light with specific diagnostic trouble codes (DTCs) like P069E, P0230, or U0109 (Lost Communication with FPCM).
- âś” A fuel pressure gauge showing low or zero pressure at the fuel rail.
How It Works and Why Ours is the Best Solution
Modern vehicles use a returnless fuel system with a variable-speed fuel pump. The FPCM receives commands from the Engine Control Module (ECM) and modulates the voltage to the fuel pump, delivering the precise amount of fuel the engine needs at any given moment. This is more efficient than older systems that ran the pump at full speed constantly. However, it adds a layer of electronic complexity. When the FPCM fails, this entire process breaks down.
Our solution simplifies your repair. By providing us with your VIN during checkout, we handle the complex programming process for you. You receive a module that is ready for installation right out of the box. No special tools, no dealer appointments, just a straightforward repair to get your truck back on the road. This module is a direct replacement for a wide range of part numbers, including: 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325.
Frequently Asked Questions
Do I need to get this FPCM programmed by a dealer?
No. This module comes fully pre-programmed to your vehicle’s VIN before we ship it. It is a plug-and-play installation, saving you the time and expense of a dealership visit.
Where is the fuel pump module located on my 2008 Sierra 1500?
On most 2007-2009 GM trucks and full-size SUVs like the Sierra, Silverado, Tahoe, and Yukon, the FPCM is mounted on the driver’s side frame rail, typically above the spare tire.
Can a bad FPCM cause a no-start condition?
Absolutely. A completely failed FPCM will not send any voltage to the fuel pump, resulting in zero fuel pressure. This is one of the most common symptoms and often gets misdiagnosed as a faulty fuel pump.
What is the difference between an FPCM and a fuel pump relay?
A traditional fuel pump relay is a simple on/off switch that sends full battery voltage to the pump whenever the key is on. An FPCM is a sophisticated computer that precisely varies the voltage to the pump based on engine demand, making the fuel system much more efficient.
Is this part compatible with my 2009 Chevy Tahoe?
Yes, this module fits a wide range of GM vehicles from this era, including the 2008-2009 Tahoe. Please review the full compatibility list in the description to confirm your specific make, model, and year.