Restore Your Vehicle’s Performance and Reliability
Is your truck or SUV experiencing frustrating issues like sudden stalling, difficulty starting, erratic engine behavior, or a persistent Check Engine Light? Before you consider replacing the entire fuel pump—a costly and labor-intensive job—the root of the problem is often a faulty Fuel System Control Module (FSCM). This vital component, also known as a fuel pump driver module, precisely regulates the voltage sent to your fuel pump, ensuring optimal fuel pressure and engine performance. When it fails, it can mimic the symptoms of a bad pump, leading to misdiagnosis and unnecessary repairs.
From the Diagnostic Bay: The Ghost in the Fuel System
I remember a 2011 Silverado that came into my shop with a classic no-start condition. The owner had already replaced the fuel pump himself, but the truck still wouldn’t fire up. He was convinced he’d gotten a defective pump. After hooking up my scan tool, I saw no communication with the fuel pump module (DTC U0109). A quick check of the wiring confirmed it was okay. The culprit was the original FSCM, which had failed due to corrosion from its location on the frame rail. We installed a VIN-programmed module, and the truck started on the first crank. This is a story I’ve seen play out dozens of times; replacing the FSCM first often saves hundreds of dollars and hours of frustration.
The Easiest Solution: Pre-Programmed and Ready to Install
The biggest hurdle in replacing a modern vehicle module is the need for expensive, dealer-specific programming. We eliminate that step entirely. When you purchase this FSCM, we flash it with the latest official GM software calibrated specifically to your vehicle’s Vehicle Identification Number (VIN). This means it arrives at your door ready for a true plug-and-play installation. No trips to the dealership, no extra programming fees, and no special tools required. This is the most efficient way to get your vehicle back on the road and running right.
Is Your Vehicle Showing These Common Symptoms?
- ✔ Engine cranks but will not start.
- ✔ Stalling while driving, especially under load.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Reduced engine power and poor fuel economy.
- ✔ Check Engine Light with codes like P069E, P0230, or U0109.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the Module: On most trucks and SUVs like the 2010 HUMMER H3, the FSCM is mounted to the frame rail, often on the driver’s side or on a rear crossmember. It’s typically a small, black plastic box with an electrical connector.
- ✔ Remove the Old Module: Disconnect the electrical harness by pressing the release tab. Then, unbolt the module from its mounting location. These bolts can sometimes be rusty, so a little penetrating oil can help.
- ✔ Install the New Module: Bolt your new, pre-programmed FSCM into place and securely reconnect the electrical connector. Ensure it clicks into place.
- ✔ Final Steps: Reconnect the negative battery terminal. The vehicle may take a few extra cranks to start as the fuel system re-pressurizes. Your repair is now complete.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. It is compatible with original part numbers 20791901, 20827745, 20877116, and 20850927. Please verify your vehicle is on the list below. If you have any questions about fitment, we’re here to help.
Fits: 2010 HUMMER H3, 2010-2012 Cadillac Escalade, 2010-2012 Chevrolet Avalanche, Silverado, Tahoe, Suburban, 2010-2012 GMC Sierra, Yukon, and many more. Please refer to the detailed fitment chart to confirm your specific model and year.
Frequently Asked Questions
Frequently Asked Questions
What does a Fuel System Control Module do?
The FSCM’s job is to precisely manage the voltage going to the in-tank fuel pump. This allows the vehicle’s main computer (PCM/ECM) to adjust fuel pressure dynamically for optimal engine performance and efficiency, a significant change from older systems that ran the pump at full power all the time.
Do I need to do any programming myself?
No. This is the key benefit of our service. We program the module to your specific vehicle using the VIN you provide at checkout. It arrives ready to install, saving you a trip to the dealer and avoiding extra costs.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information for programming.
Where is the FSCM located on my 2010 HUMMER H3?
On the 2010 HUMMER H3, the Fuel System Control Module is typically located on the rear frame, making it relatively accessible once you are safely underneath the vehicle.
What if my original part number is 20877116?
That’s no problem. This module is a fully compatible replacement for part numbers 20791901, 20827745, 20877116, and 20850927. We will program it to function perfectly for your vehicle’s requirements.
Is this a permanent fix?
Yes, this is a reliable, long-term solution. By replacing the faulty module and ensuring it has the latest GM software, you are addressing the direct cause of these common fuel system electronic failures.