Restore Power and Reliability to Your GM Truck
Is your 2010-2012 Chevrolet Avalanche or other GM vehicle experiencing frustrating fuel delivery problems? If you’re dealing with long crank times, unexpected stalling, a check engine light, or a complete no-start situation, a faulty Fuel System Control Module (FSCM) is a very common cause. This isn’t just an inconvenience; it’s a safety issue. This direct-replacement FSCM, part number 20850927, is the definitive solution to get your truck running smoothly and reliably again.
The biggest hurdle in replacing an FSCM has always been the expensive and time-consuming programming required at a dealership. We eliminate that problem entirely. Before we ship your part, we flash it with the latest official GM software, perfectly matched to your vehicle using the VIN you provide. This means it arrives at your door ready for a simple, plug-and-play installation. You get a permanent fix without the dealer hassle or cost. This is the smart, efficient way to solve your fuel system woes.
A Technician’s Notebook: The Frame Rail Failure
In my 20+ years in the shop, I’ve seen hundreds of GM trucks and SUVs from this era come in on a tow truck with a no-start condition. The owner often suspects the fuel pump, but after a quick diagnostic check, the real culprit is almost always the Fuel System Control Module. On most of these trucks, like your Avalanche, the FSCM is mounted directly to the driver’s side frame rail. It’s completely exposed to the elements—rain, snow, road salt, and mud. Over time, moisture gets past the seals, corroding the circuit board and connectors. This leads to erratic voltage, loss of communication with the ECM (Code U0109), and incorrect fuel pressure commands (Code P069E). Replacing it with this pre-programmed unit is the most common and effective repair I perform for these symptoms.
Is Your Truck Showing These Symptoms?
- âś” Engine cranks but will not start
- âś” Vehicle starts and then immediately stalls
- âś” Stuttering or hesitation during acceleration
- âś” Reduced engine power or “limp mode”
- âś” An active Check Engine Light with fuel-related codes
- âś” Common Diagnostic Trouble Codes (DTCs): P069E, P0230, P0606, U0109
A Straightforward Guide to Installation
- âś” Safety First: Disconnect the negative terminal from your vehicle’s battery.
- âś” Locate the Module: On most trucks like the Avalanche, Sierra, and Silverado, you’ll find the FSCM mounted to the outside of the driver-side frame rail, roughly below the driver’s door.
- âś” Disconnect Electrical Connectors: Carefully press the release tabs and pull the electrical connectors straight out. Inspect them for any corrosion or damage.
- âś” Remove the Old Module: Use a socket wrench to remove the bolts or nuts holding the old FSCM to the frame. The module should now be free.
- âś” Install the New Module: Mount your new, pre-programmed FSCM in the same location and secure it with the original hardware.
- âś” Reconnect and Finalize: Plug the electrical connectors firmly into the new module until they click. Reconnect the negative battery terminal. The vehicle is now ready to start with no further programming needed.
Verified Vehicle Compatibility
This Fuel System Control Module is a direct fit for a wide range of General Motors vehicles. While it is a primary solution for the 2010-2012 Avalanche FSCM, it also fits many other popular models. It is a compatible replacement for part numbers 20791901, 20827745, 20877116, and 20850927. Key compatible models include:
- âś” Chevrolet Avalanche, Silverado, Suburban, Tahoe, Colorado, Express Van
- âś” GMC Sierra, Yukon, Yukon XL, Canyon, Savana Van
- âś” Cadillac Escalade, CTS
- âś” Buick Enclave, LaCrosse, Regal
- âś” Hummer H3, Saturn VUE, and more.
Please check the detailed fitment list or contact us with your VIN to ensure perfect compatibility for your specific vehicle.
Frequently Asked Questions
Do I need to do any programming after I receive this module?
No. We program the module to your vehicle’s specific VIN before shipping. It arrives ready to install, saving you a trip to the dealership.
What information do you need from me?
After you place your order, please send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module without it, as the programming is essential for it to function correctly.
Where is the FSCM located on my 2011 Avalanche?
The Fuel System Control Module is typically located on the driver’s side frame rail, near the spare tire. It’s exposed to the elements, which is a common reason for its failure.
Will this fix a P069E code?
Yes, the DTC P069E (Fuel Pump Control Module Requested MIL Illumination) is one of the most common codes indicating a failed FSCM. Replacing the module with this pre-programmed unit is the correct repair for this code, assuming the wiring is intact.
Is this part compatible with part number 20877116?
Yes, this module is fully compatible with and replaces part numbers 20791901, 20827745, 20877116, and 20850927. We will load the correct software for your specific vehicle.