Restore Power and Reliability to Your GM Truck
Is your 2010-2012 Sierra 1500 suffering from frustrating fuel delivery issues like stalling, hesitation, or a no-start condition? You’re not alone. The Fuel System Control Module (FSCM), also known as the fuel pump driver module, is a common failure point on these trucks. It’s the electronic brain that tells your fuel pump how much pressure to deliver. When it fails, it can leave you stranded. This module is the definitive, hassle-free solution to get your truck running right again.
Unlike modules from a dealership or local parts store, this FSCM arrives at your door pre-programmed to your truck’s specific Vehicle Identification Number (VIN). We flash it with the latest, most stable software from GM, ensuring optimal performance and compatibility right out of the box. This crucial step eliminates the need for expensive programming tools or a costly trip to the dealer, making this a perfect fix for both seasoned mechanics and DIY enthusiasts.
A Technician’s Notebook
I remember a 2011 Sierra 1500 that came into my bay on a tow truck. The customer said it would crank but never start, and the ‘Reduced Engine Power’ light was on. A quick scan showed code U0109 – Lost Communication with Fuel Pump Control Module. On these trucks, the FSCM is mounted on the frame rail, exposed to water, salt, and road grime. Sure enough, after lowering the spare tire for access, I found the original module’s aluminum casing was heavily corroded, and the connector pins were green and fuzzy. It’s a textbook failure I’ve seen dozens of times. We replaced it with a pre-programmed module just like this one, and the truck fired right up. It’s a 30-minute fix that solves a major headache.
Is Your Truck Showing These Symptoms?
A failing FSCM can mimic other fuel system problems. Here are the most common signs that point directly to this module:
- ✔ Engine cranks but will not start
- ✔ Stalling, especially under load or when coming to a stop
- ✔ ‘Reduced Engine Power’ message on the dash
- ✔ Hesitation or sputtering during acceleration
- ✔ Check Engine Light with codes like U0109, P069E, or P0230
- ✔ Inconsistent fuel pressure readings
A Straightforward Guide to Installation
Replacing the FSCM on your Sierra 1500 is a job most DIYers can handle with basic tools. It’s typically located on the driver-side frame rail, near the spare tire.
- Safety First: Disconnect the negative terminal from your truck’s battery.
- Access the Module: Lower the spare tire to give yourself clear access to the frame rail where the module is mounted.
- Disconnect and Remove: Carefully unplug the electrical connector. Then, remove the bolts or nuts holding the old module to the frame.
- Install the New Module: Mount the new, pre-programmed FSCM in the same location. Ensure it’s securely fastened.
- Reconnect: Plug the electrical connector firmly into the new module. You should hear a click.
- Final Steps: Reinstall the spare tire and reconnect the negative battery terminal. Start the vehicle to confirm the repair.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 20850927, 20791901, 20827745, and 20877116. It is guaranteed to fit the following GM vehicles, but please verify your part number or send us your VIN to confirm.
- GMC Sierra 1500 Pickup (2010-2012)
- Chevrolet Silverado 1500 Pickup (2010-2012)
- Chevrolet Avalanche 1500 (2010-2012)
- Cadillac Escalade, ESV, EXT (2010-2012)
- Chevrolet Tahoe (2010-2012)
- GMC Yukon & Yukon XL 1500 (2010-2012)
- Chevrolet Suburban 1500 (2010-2012)
- Chevrolet Express / GMC Savana 1500 Van (2010-2012)
- And many other GM models including Acadia, Enclave, Traverse, CTS, LaCrosse, and more.
Frequently Asked Questions
Why do you need my VIN?
Your vehicle’s VIN is required to program the module with the exact software and calibrations your truck needs from the factory. This ensures it works perfectly upon installation without any additional steps.
Is this a plug-and-play part?
Yes! Because we program it to your VIN before shipping, it is a true plug-and-play solution. No dealership visit or special tools are required for programming.
Where is the FSCM located on my 2011 Sierra 1500?
On most 2010-2012 GM trucks like the Sierra and Silverado, the Fuel System Control Module is mounted to the inside of the driver-side frame rail, usually just above the spare tire.
Will this fix a P069E code?
Yes, a faulty FSCM is a primary cause for Diagnostic Trouble Code (DTC) P069E (Fuel Pump Control Module Requested MIL Illumination). Replacing the module often resolves this code, along with U0109 and P0230.
What if I have a different part number on my old module?
This module is a direct replacement for several part numbers, including 20791901, 20827745, and 20877116. As long as your vehicle is on the compatibility list, this module will work.