Is Your 2008-2009 GM Truck or SUV Stalling, Sputtering, or Refusing to Start?
There’s nothing more frustrating than turning the key and hearing your engine crank endlessly without firing up, or worse, having it stall in the middle of traffic. These are classic signs of a fuel delivery problem, and on many 2007-2009 GM vehicles, the culprit is often a failed Fuel Pump Control Module (FPCM), also known as a Fuel System Control Module (FSCM). This small but critical component is the brain behind your fuel pump, and when it fails, it can leave you stranded. Don’t just assume it’s the fuel pump—diagnose the problem correctly and get the right part the first time.
The Critical Role of the Fuel Pump Control Module
In older vehicles, the fuel pump often ran at a constant speed. Modern GM vehicles, however, use an FPCM to precisely manage the voltage sent to the fuel pump. It receives commands from the Engine Control Module (ECM) and adjusts the fuel pump’s speed based on engine load, speed, and demand. This sophisticated control provides better fuel efficiency, reduces emissions, and ensures optimal engine performance under all conditions. When the FPCM malfunctions, this delicate balance is thrown off, leading to a host of driveability issues.
From the Diagnostic Bay
We recently had a 2008 Silverado 1500 towed in with a classic “crank, no-start” condition. The owner had already spent a significant amount of money replacing the in-tank fuel pump himself, assuming it was the obvious cause. When the new pump didn’t fix the issue, he was at his wit’s end. Our first step was to scan for diagnostic trouble codes (DTCs), and we immediately found a P069E code stored: “Fuel Pump Control Module Commanded OFF.” This code points directly to an issue with the FPCM or its circuit. A quick inspection under the truck revealed the module, mounted on the driver’s side frame rail, was heavily corroded from years of exposure to road salt and moisture. We replaced it with a pre-programmed module, cleared the code, and the truck fired right up. The customer could have saved himself a weekend of frustration and the cost of a new fuel pump by diagnosing the FPCM first.
Common Symptoms of a Failing GM FPCM
- ✔ Engine Cranks but Won’t Start: The FPCM isn’t commanding the fuel pump to turn on, so no fuel reaches the engine.
- ✔ Sudden Stalling: The module may cut power to the fuel pump intermittently, causing the engine to stall while driving, often without warning.
- ✔ Hesitation and Sputtering: The engine may hesitate or sputter during acceleration due to inconsistent fuel pressure.
- ✔ Reduced Power and Poor Performance: If the fuel pump isn’t receiving the correct voltage, the engine will be starved for fuel, leading to a noticeable loss of power.
- ✔ Check Engine Light: A failing FPCM will often trigger a Check Engine Light. Common trouble codes include P069E, P0230, and P0606.
- ✔ Loud Fuel Pump Whine: An FPCM that is sending erratic voltage can sometimes cause the fuel pump to run noisily.
The Definitive Solution: A Pre-Programmed 2008-2009 Tahoe Fuel Pump Module
Replacing the FPCM is one thing, but getting it to work with your vehicle is another. A new module from the dealership requires a separate, expensive programming session using their proprietary tools. Our module eliminates that hassle and expense entirely. This part, number 25866052, is the definitive, plug-and-play solution for your vehicle. We use your vehicle’s Vehicle Identification Number (VIN) to load the latest, most stable GM-approved software directly onto the module before it ships. This ensures perfect communication with your vehicle’s ECM and correct fuel pump operation from the moment you install it.
Simple Installation, Lasting Results
For most compatible trucks and SUVs like the Tahoe, Yukon, Silverado, and Sierra, the FPCM is located on the driver’s side frame rail, near the spare tire. Installation is straightforward for anyone with basic mechanical skills:
- Safety First: Disconnect the negative battery terminal.
- Locate the Module: Find the old FPCM on the vehicle’s frame.
- Disconnect and Remove: Unplug the electrical connectors and unbolt the module from its bracket. Note that these bolts can sometimes be corroded and may require penetrating oil.
- Install the New Module: Bolt the new, pre-programmed module in place and securely reconnect the electrical harnesses.
- Reconnect Battery: Reconnect the negative battery terminal.
- Start and Verify: Start the vehicle and confirm that it runs smoothly. If you have a scan tool, clear any old trouble codes.
By choosing our pre-programmed 2008-2009 Tahoe Fuel Pump Module, you are not just buying a part; you are buying a complete, ready-to-install solution that restores your vehicle’s reliability and performance without the need for a dealership visit.
Broad Compatibility Across the GM Lineup
This module is a direct replacement for a wide range of original equipment part numbers, ensuring a perfect fit and function. It is compatible with the following part numbers: 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325. It fits an extensive list of GM trucks and SUVs, including the Cadillac Escalade, Chevy Avalanche, Silverado, Suburban, GMC Sierra, Yukon, Hummer H2, and many more. Please verify the fitment list to ensure it matches your specific vehicle.
Frequently Asked Questions
What exactly does a Fuel Pump Control Module do?
The FPCM acts as a dedicated computer for your fuel pump. It receives information from the main Engine Control Module (ECM) and precisely regulates the voltage and speed of the fuel pump to deliver the exact amount of fuel the engine needs at any given moment. This improves efficiency and performance over older, single-speed fuel pump systems.
Do I absolutely need to get this module programmed?
Yes, programming is essential. An unprogrammed module will not communicate correctly with your vehicle’s other computers, and the engine will not run. Our service solves this problem by programming the module to your specific VIN before we ship it, making the installation a simple plug-and-play process for you.
Where is the FPCM located on my 2008 Chevy Tahoe?
On the 2008-2009 Tahoe and most similar GM trucks and SUVs (like the Silverado, Sierra, and Yukon), the Fuel Pump Control Module is typically mounted on the left (driver’s side) frame rail, often above or near the spare tire.
Will this part fix a P069E trouble code?
The diagnostic trouble code P069E (“Fuel Pump Control Module Commanded OFF”) is a very strong indicator that the FPCM has failed or there is a problem in its circuit. While you should always verify the wiring and connectors are in good condition, replacing a faulty FPCM is the most common and effective fix for this specific code.
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive your VIN, as this information is required to load the correct software for your vehicle.
My original part number is 20759945. Will this module work?
Yes. This module, 25866052, is a direct replacement for several part numbers, including 20759945. We list all compatible part numbers in the description to ensure you can order with confidence, knowing it will fit and function correctly.