Restore Your Sierra Denali’s Performance and Reliability
Is your 2008-2009 Sierra Denali experiencing frustrating issues like stalling, hesitation on acceleration, or a dreaded no-start condition? Before you condemn the fuel pump, the real culprit is often a failing Fuel Pump Control Module (FPCM). As a technician with over two decades of experience, I’ve seen this exact scenario countless times. The FPCM is the brain that tells your fuel pump how much pressure to deliver. When it fails, it starves your engine of fuel, leading to poor performance and leaving you stranded. This module is the definitive, hassle-free solution.
We take the guesswork and extra cost out of the repair. Simply provide your vehicle’s VIN during checkout, and we will program this module with the latest, most stable software directly from GM. It arrives at your door ready for a simple plug-and-play installation, saving you a trip to the dealership and their expensive programming fees. This isn’t just a replacement part; it’s a direct solution to get your truck running right again.
From the Diagnostic Bay: The Intermittent Stall That Wasn’t the Fuel Pump
A customer brought in his ’08 Sierra with a classic complaint: it would run fine for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. He was convinced he needed a new fuel pump. Instead of jumping to that expensive conclusion, we hooked up the scan tool. We found a stored DTC U0109 – Lost Communication with Fuel Pump Control Module. On these GM trucks, the FPCM is mounted on the frame rail, exposed to water, salt, and road debris. Corrosion had worked its way into the module’s connector and internal circuits, causing it to overheat and shut down intermittently. By replacing only the FPCM with a pre-programmed unit, we saved him over $500 on an unnecessary fuel pump job and had him back on the road the same day.
Common Signs of a Failing FPCM
- ✔ Engine cranks but will not start
- ✔ Stalling, especially when coming to a stop or under load
- ✔ Hesitation or sputtering during acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light with codes like P069E, P0230, or U0109
- ✔ A whining noise from the fuel pump as it runs erratically
A Straightforward Guide to Installation
Installing your new 2008-2009 Sierra Denali FPCM is a job most DIYers can handle in under an hour with basic hand tools. Since we’ve already done the programming, you can skip the dealership entirely.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: On most Sierra models, the FPCM is mounted to the driver-side frame rail, typically near the spare tire.
- Disconnect and Remove: Carefully unplug the electrical connector. Use a socket wrench to remove the bolts securing the old module to the frame. Be mindful of any corrosion.
- Install the New Module: Mount your new, pre-programmed FPCM in the same location. Ensure the bolts are snug but not over-tightened.
- Reconnect: Firmly plug in the electrical connector until it clicks, ensuring a secure connection. A dab of dielectric grease on the pins is recommended for corrosion prevention.
- Final Steps: Reconnect the battery terminal. The vehicle is now ready to start with no further programming required.
Will This Fit My Vehicle?
This module is a direct-fit replacement for a wide range of GM vehicles and is compatible with part numbers 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325. Please verify fitment for your specific model below:
- Acadia: 2009
- Avalanche 1500: 2008-2009
- Canyon / Colorado: 2009
- Enclave: 2009
- Escalade / ESV / EXT: 2008-2009
- Express / Savana 1500 Van: 2008-2009
- Hummer H2: 2008-2009
- Hummer H3: 2009
- Outlook: 2009
- Sierra 1500 Pickup: 2007 (New Body Style), 2008-2009
- Sierra Denali: 2008-2009
- Silverado 1500 Pickup: 2007 (New Body Style), 2008-2009
- Suburban 1500: 2008-2009
- Tahoe: 2008-2009
- Traverse: 2009
- Vue: 2008-2009
- Yukon / Yukon XL 1500: 2008-2009
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you can send us your 17-digit Vehicle Identification Number (VIN) through the messaging system or add it as a note during checkout. We cannot ship the module until we receive your VIN.
Is any additional programming needed after I install it?
No. This module arrives fully programmed with the latest GM software matched to your specific VIN. It is a true plug-and-play solution, requiring no further action or dealer visits.
What’s the difference between the FPCM and the fuel pump?
The fuel pump is a mechanical device in the gas tank that moves fuel. The FPCM is an electronic module (a small computer) that controls the fuel pump’s speed and pressure. FPCM failure is a very common issue on these vehicles and often misdiagnosed as a bad fuel pump.
Where is the FPCM located on my 2008-2009 Sierra Denali?
The FPCM is typically mounted on the outside of the driver-side frame rail, often located above the spare tire area. Its exposure to the elements is a primary reason for its high failure rate.
Will this fix a P069E check engine code?
Yes, in the vast majority of cases, a faulty FPCM is the root cause of a P069E code (Fuel Pump Control Module Requested MIL Illumination). Replacing it with this pre-programmed unit is the correct repair for that specific diagnostic trouble code.