Restore Your Avalanche’s Performance and Reliability
Is your 2008-2009 Chevrolet Avalanche experiencing sudden stalling, hesitation during acceleration, or a frustrating no-start condition? Before you consider replacing the entire fuel pump, the culprit is often a failed Fuel Pump Control Module (FPCM). Located on the frame rail, this critical component is exposed to harsh road conditions, leading to corrosion and electronic failure over time. This replacement FPCM, part number 25854536, is the definitive solution to restore your truck’s fuel delivery system to factory specifications.
We take the guesswork and extra expense out of the repair. Unlike a generic module from a parts store, this unit arrives at your door pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This means no expensive trip to the dealership for programming is required. It’s a true plug-and-play fix, loaded with the latest GM software updates to ensure optimal performance and longevity. By installing our 2008-2009 Avalanche FPCM, you’re not just replacing a part—you’re restoring your peace of mind.
From the Diagnostic Bay: The Ghost in the Machine
I’ll never forget a 2008 Sierra 1500 (which shares the same platform as your Avalanche) that came into my shop. The owner was at his wit’s end. The truck would run fine for days, then suddenly die at a stoplight or hesitate badly on the highway. He’d already replaced the fuel pump, but the problem persisted. After hooking up my scan tool, I saw the tell-tale code: P069E – Fuel Pump Control Module Commanded OFF. A quick visual inspection under the truck confirmed my suspicion. The original FPCM, mounted right on the driver-side frame rail, was caked in dirt and its aluminum casing was heavily corroded from years of exposure to road salt and moisture. The corrosion had compromised the internal electronics, causing the intermittent failure. We installed a new, pre-programmed module, and the truck ran perfectly. This is a scenario I’ve seen hundreds of times on these GM trucks and SUVs.
Is Your Avalanche Exhibiting These Symptoms?
- ✔ Engine stalls unexpectedly, especially at idle or low speeds.
- ✔ Vehicle hesitates or stumbles during acceleration.
- ✔ Crank, no-start condition where the engine turns over but won’t fire up.
- ✔ “Reduced Engine Power” message displayed on the dashboard.
- ✔ Check Engine Light is on with diagnostic trouble codes (DTCs) such as P069E, P0230, or P0627.
- ✔ Inconsistent fuel pressure readings.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the Module: On most compatible trucks and SUVs, including your Avalanche, the FPCM is mounted to the driver-side frame rail, typically above the spare tire.
- ✔ Disconnect and Remove: Carefully unplug the electrical connector(s) from the old module. Then, remove the bolts or nuts securing it to the frame. It may be tight due to corrosion, so a little penetrating oil can help.
- ✔ Install the New FPCM: Mount your new, pre-programmed module in the same location, securing it with the original hardware. Reconnect the electrical harness, ensuring it clicks securely into place.
- ✔ Final Step: Reconnect the negative battery terminal. The vehicle is now ready to start with no further programming needed.
Verified Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 25854536 and is compatible with a wide range of General Motors vehicles. Please verify your vehicle is on this list. This part is programmed specifically for your VIN, ensuring perfect compatibility.
- Acadia: 2009
- Avalanche 1500: 2008-2009
- Colorado / Canyon: 2009
- Enclave: 2009
- Escalade / ESV / EXT: 2008-2009
- Express / Savana 1500 Van: 2008-2009
- Hummer H2: 2008-2009
- Hummer H3: 2009
- Outlook: 2009
- Silverado / Sierra 1500 Pickup: 2007 (New Body Style), 2008-2009
- Sierra Denali: 2008-2009
- Suburban 1500: 2008-2009
- Tahoe / Yukon / Yukon XL 1500: 2008-2009
- Traverse: 2009
- Vue: 2008-2009
This module is also a direct replacement for the following part numbers: 13501024, 15213110, 20759945, 20850907, 25785013, 25866052, 25967325.
Frequently Asked Questions
What does a Fuel Pump Control Module do?
The FPCM regulates the voltage sent to your vehicle’s electric fuel pump. Instead of running the pump at full speed all the time, the FPCM adjusts its speed based on engine demand. This improves efficiency and extends the life of the fuel pump.
Why do you need my VIN?
Your vehicle’s VIN is required so we can program the module with the exact software and calibrations specified by GM for your truck’s specific configuration. This ensures seamless communication with your vehicle’s other computers and guarantees a true plug-and-play installation without needing a dealer visit.
Is this part difficult to install for a DIYer?
For most individuals with basic hand tools, this is a very manageable repair. The module is typically located on the outside of the frame rail, making it accessible without removing major components. Our step-by-step guide can help you through the process.
How do I provide my VIN after purchase?
After you complete your purchase, simply send us a message with your 17-digit VIN. We will program the module and then ship it to you, typically within one business day.
Could my problem be the fuel pump instead of the FPCM?
While possible, the FPCM is a very common point of failure on these vehicles, especially if you see code P069E. FPCM failure often mimics a bad fuel pump. Because the FPCM is generally less expensive and easier to replace than the in-tank fuel pump, it’s a wise first step in the diagnostic process.