Is Your Truck Stalling, Hesitating, or Refusing to Start?
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2008-2009 Sierra Denali is experiencing sudden stalls, poor acceleration, or a dreaded no-start condition, the culprit is often a failed Fuel Pump Control Module (FPCM). This small but critical component, also known as a Fuel Pump Driver Module, is responsible for managing the voltage sent to your fuel pump. When it fails, it starves your engine of the fuel it needs to run properly, leaving you stranded and with a check engine light glaring from the dash.
Case Study: A Tricky Diagnosis
I remember a 2008 Silverado 1500 that came into my bay with a classic, intermittent stalling complaint. The owner had already replaced the fuel pump, but the problem persisted. No codes were stored initially, making it a real head-scratcher. During a test drive with a scan tool connected, I finally saw it: the data stream for ‘Fuel Pump Control Module Voltage’ dropped to zero right before it stalled. A quick look under the truck confirmed my suspicion. The original FPCM, mounted on the driver-side frame rail, was heavily corroded from years of exposure to road salt and moisture—a failure I’ve diagnosed on hundreds of these GM trucks. This isn’t just a part failure; it’s a design flaw that our solution directly addresses.
The Simple, Reliable Solution: A VIN-Programmed Module
Don’t waste time and money at the dealership. We offer a direct-fit 2008-2009 Sierra Denali FPCM that arrives at your door ready for installation. The biggest hurdle with replacing these modules is the mandatory programming—a step that usually requires expensive dealer-specific tools. We eliminate that completely. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest, most stable software from GM. It’s a true plug-and-play fix that restores factory performance and reliability.
Common Signs of a Failing FPCM
- ✔ Engine stalls unexpectedly, especially while driving.
- ✔ Vehicle cranks but will not start.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Reduced engine power and poor fuel economy.
- ✔ Check Engine Light with codes like P069E, U0109, P0230, or P0606.
- ✔ A buzzing or whining noise from the fuel pump area.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery.
- ✔ Locate the Module: On most Sierra/Silverado models, the FPCM is mounted to the driver-side frame rail, typically near the spare tire. On other GM vehicles, it may be on a rear crossmember or in the engine compartment.
- ✔ Disconnect and Remove: Unplug the electrical connectors. Be gentle with the locking tabs, as they can become brittle. Then, unbolt the old module from the frame.
- ✔ Install the New Module: Bolt the new, pre-programmed FPCM into the original location. A light coat of dielectric grease on the connector pins is a great pro-tip to prevent future corrosion.
- ✔ Reconnect: Securely plug in the electrical connectors until they click. Reconnect the negative battery terminal.
- ✔ Final Step: Turn the key to the ‘On’ position for 10-15 seconds before starting the engine. This allows the system to prime and recognize the new module. Your vehicle is now ready to drive.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325. It is guaranteed to fit the following vehicles:
- ✔ Cadillac Escalade, ESV, EXT: 2008-2009
- ✔ Chevrolet Avalanche 1500: 2008-2009
- ✔ Chevrolet Colorado: 2009
- ✔ Chevrolet Express 1500 Van: 2008-2009
- ✔ Chevrolet Silverado 1500 Pickup: 2007 (New Body Style), 2008-2009
- ✔ Chevrolet Suburban 1500: 2008-2009
- ✔ Chevrolet Tahoe: 2008-2009
- ✔ Chevrolet Traverse: 2009
- ✔ GMC Acadia: 2009
- ✔ GMC Canyon: 2009
- ✔ GMC Savana 1500 Van: 2008-2009
- ✔ GMC Sierra 1500 Pickup: 2007 (New Body Style), 2008-2009
- ✔ GMC Sierra Denali: 2008-2009
- ✔ GMC Yukon & Yukon XL 1500: 2008-2009
- ✔ Buick Enclave: 2009
- ✔ Hummer H2: 2008-2009
- ✔ Hummer H3: 2009
- ✔ Saturn Outlook: 2009
- ✔ Saturn VUE: 2008-2009
Frequently Asked Questions
Why do I need to provide my VIN?
Your vehicle’s VIN allows us to program the Fuel Pump Control Module with the exact software and calibrations specified by GM for your truck’s specific configuration. This ensures perfect compatibility and function without any additional dealer visits.
What does the Fuel Pump Control Module (FPCM) do?
The FPCM acts as a smart relay for your fuel pump. Instead of just running the pump at full speed all the time, it precisely varies the voltage based on engine demand. This improves efficiency, reduces noise, and extends the life of the fuel pump.
Is this a difficult part to replace myself?
For most DIYers with basic tools, this is a very manageable job. Since our module comes pre-programmed, the physical replacement is straightforward. It typically involves removing a few bolts and unplugging a connector, usually taking less than an hour.
Will this fix my P069E check engine light code?
Yes, in the vast majority of cases, the P069E code (Fuel Pump Control Module Requested MIL Illumination) is a direct indicator of a faulty FPCM. Replacing the module with our pre-programmed unit is the correct and definitive fix for this code.
Is this part a replacement for part number 20850907?
Yes, this module is a fully compatible replacement for a range of part numbers, including 20850907. We ensure the programming matches your vehicle’s requirements regardless of the original part number.