Restore Your Truck’s Performance and Reliability
Is your 2010-2012 Chevrolet Avalanche struggling with erratic engine behavior, stalling, or a dreaded no-start condition? Before you consider replacing the entire fuel pump, the culprit is often a faulty Fuel System Control Module (FSCM). As a technician with over two decades of experience, I’ve seen countless GM trucks and SUVs sidelined by this specific component. This module is the brain of your fuel system, and when it fails, it can cause a cascade of frustrating and hard-to-diagnose problems.
We offer a straightforward, reliable solution. This is a genuine GM Fuel System Control Module, part number 20791901, that arrives at your door pre-programmed to your vehicle’s specific VIN. This means you can skip the expensive trip to the dealership for programming. We handle the complex part, loading the latest GM software updates onto the module before we ship. This ensures optimal performance, fuel efficiency, and a permanent fix for common fuel delivery issues. This is the most efficient way to get your 2010-2012 Avalanche FSCM replaced and your truck back to running like it should.
Case Study: A Tricky Diagnosis
A customer brought in his 2011 Sierra with a classic complaint: it would crank but not start, and sometimes it would stall at a red light. He had already replaced the in-tank fuel pump himself, but the problem persisted. His scanner showed a P069E code (Fuel Pump Control Module Requested MIL Illumination). Instead of throwing more parts at it, we checked the FSCM. Located on the frame rail, it was heavily corroded from years of exposure to road salt and moisture. A new, programmed module fixed the issue instantly. He could have saved hundreds of dollars and a weekend of frustration by diagnosing the FSCM first. This is a story I’ve seen play out dozens of times.
Common Signs of a Failing Fuel Control Module
- ✔ Check Engine Light with codes like P069E, P0230, P0606, or U0109.
- ✔ “Reduced Engine Power” message displayed on the dashboard.
- ✔ Engine cranks but refuses to start.
- ✔ Long crank times before the engine finally turns over.
- ✔ Stalling, hesitation, or sputtering, especially under acceleration.
- ✔ A noticeable drop in fuel economy.
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 GM trucks like the Avalanche, the FSCM is mounted on the driver’s side frame rail, typically near the spare tire.
- ✔ Disconnect and Remove: Unplug the electrical connectors. Be gentle with the locking tabs. Then, unbolt the module from the frame. These bolts may be rusty, so a little penetrating oil can help.
- ✔ Install the New Module: Bolt your new, pre-programmed 2010-2012 Avalanche FSCM into place. Ensure it is mounted securely.
- ✔ Connect and Finalize: Plug the electrical connectors firmly into the new module. Reconnect your battery’s negative terminal.
- ✔ Start the Vehicle: Turn the key to the ‘On’ position for 10 seconds to allow the system to prime, then start the engine. Your vehicle is ready to go with no further programming needed.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 20791901, 20827745, 20877116, and 20850927. It is compatible with a wide range of General Motors vehicles. Please verify your vehicle is on the list below. Providing your VIN at checkout is essential for us to program the correct software for your specific application.
- Chevrolet Avalanche 1500: 2010, 2011, 2012
- Chevrolet Silverado 1500: 2010, 2011, 2012
- GMC Sierra 1500 / Denali 1500: 2010, 2011, 2012
- Cadillac Escalade / ESV / EXT: 2010, 2011, 2012
- Chevrolet Tahoe / Suburban 1500: 2010, 2011, 2012
- GMC Yukon / XL 1500: 2010, 2011, 2012
- Chevrolet Colorado / GMC Canyon: 2010, 2011, 2012
- And many more GM models including Acadia, Enclave, Traverse, CTS, LaCrosse, and Express/Savana vans.
Replacing your faulty 2010-2012 Avalanche FSCM with our pre-programmed unit is the smartest, most cost-effective way to solve your fuel system problems and restore your vehicle’s dependability.
Frequently Asked Questions
Do I need to do any programming myself?
No. This module comes fully programmed with the latest GM software matched to your vehicle’s VIN. It is a true plug-and-play solution.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information for programming.
Is this compatible with other part numbers?
Yes, this module is a direct replacement for part numbers 20791901, 20827745, 20877116, and 20850927.
Where is the FSCM located on my 2011 Avalanche?
On the 2010-2012 Avalanche, Silverado, and other similar GM trucks, the Fuel System Control Module is typically mounted to the inside of the driver-side frame rail, often above the spare tire.
Will this fix a P069E code?
In my experience, a faulty FSCM is the most common cause of a P069E trouble code. While you should always perform a complete diagnosis, replacing the module with this pre-programmed unit is the definitive fix in the vast majority of cases.