Restore Your Vehicle’s Performance and Reliability
Is your 2010 Saturn Outlook or other GM vehicle suddenly stalling, hesitating, or refusing to start? Before you condemn the fuel pump, the real problem is often a faulty Fuel System Control Module (FSCM). This critical component, also known as the fuel pump driver module, regulates the voltage sent to your fuel pump. When it fails, it can cause a wide range of frustrating and unpredictable fuel delivery issues. In my 20+ years of experience, I’ve seen countless vehicles misdiagnosed, leading to expensive and unnecessary fuel pump replacements when this simple module was the root cause.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM module and flash it with the latest official software, specifically programmed to your vehicle’s VIN. This means you can skip the expensive trip to the dealership for programming. You get a part that works correctly right out of the box, restoring stable fuel pressure and engine performance.
A Technician’s Notebook: The Silverado That Wouldn’t Start
A customer brought in their 2010 Silverado 1500 with a classic no-start condition. The engine would crank but never fire. Another shop had already quoted them over $1,000 for a new fuel pump, assuming it was dead. My first step was to check for trouble codes. Sure enough, a U0109 (Lost Communication With Fuel Pump Control Module) was stored. Instead of going straight for the fuel tank, I located the FSCM on the driver-side frame rail. It was heavily corroded from years of exposure to road salt and moisture—a common failure point. We installed one of our pre-programmed modules, and the truck fired up on the first try. The customer saved over $800 and hours of labor by correctly diagnosing the FSCM first.
Is Your Vehicle Showing These Symptoms?
- âś” Engine cranks but will not start
- âś” Stalling, especially under load or when warm
- âś” Hesitation or stumbling during acceleration
- âś” Reduced engine power and poor fuel economy
- âś” An active Check Engine Light with fuel-related codes
- âś” Common Diagnostic Trouble Codes (DTCs): P069E, U0109, P0230
A Straightforward Guide to Installation
- âś” Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- âś” Locate the Module: On most GM trucks and SUVs (Silverado, Tahoe, Escalade), the FSCM is mounted on the driver’s side frame rail, near the spare tire. On crossovers (Acadia, Traverse, Outlook), it’s typically on the rear subframe/crossmember. On sedans, check the trunk area.
- âś” Disconnect and Remove: Unplug the electrical connectors. Be gentle with the locking tabs, as they can become brittle. Then, remove the bolts or nuts holding the module to the chassis.
- âś” Install the New Module: Mount your new, pre-programmed FSCM in the same location. It’s a good practice to clean the mounting surface and apply a bit of dielectric grease to the connector pins to protect against future corrosion.
- âś” Reconnect and Test: Plug in the electrical connectors until they click securely. Reconnect the battery terminal. Turn the key to the ‘On’ position for a few seconds to allow the fuel system to prime, then start the vehicle to confirm the repair.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 20791901, 20827745, 20877116, and 20850927. It fits a wide range of General Motors vehicles. Please verify your specific model and options below:
- Saturn Outlook: 2010
- Buick: Enclave (2010-12), LaCrosse (2010-12), Regal (2011-12)
- Cadillac: CTS (2010-12), Escalade / ESV / EXT (2010-12)
- Chevrolet: Avalanche 1500 (2010-12), Captiva Sport (2012), Colorado (2010-12), Express 1500 Van (2010-12), Impala (2012), Silverado 1500 (2010-12), Suburban 1500 (2010-12), Tahoe (2010-12), Traverse (2010-12)
- GMC: Acadia (2010-12), Canyon (2010-12), Savana 1500 Van (2010-12), Sierra 1500 / Denali 1500 (2010-12), Yukon / XL 1500 (2010-12)
- Hummer: H3 (2010)
- Saturn: Vue (2010)
Note: For some 2012 models, fitment depends on whether the vehicle has an integrated trailer brake controller. Please check your specific application.
Frequently Asked Questions
What does a Fuel System Control Module do?
The FSCM is a small computer that precisely controls the speed and output of your vehicle’s electric fuel pump. Instead of the pump running at full speed all the time, the FSCM adjusts the voltage based on engine demand, which improves efficiency and the lifespan of the pump.
Why is getting a pre-programmed module so important?
Modern vehicle modules are not plug-and-play. A new, unprogrammed module must be electronically configured to your specific vehicle’s VIN and options using specialized dealer tools. Our service handles this for you, so the part is ready to install upon arrival, saving you hundreds in dealer fees and towing 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 the module until we receive your VIN, as the programming is specific to your vehicle.
Could my problem be the fuel pump instead?
It’s possible, but the FSCM is a very common point of failure and often produces the same symptoms as a bad fuel pump. Because the FSCM is typically easier and less expensive to replace, and is known to fail from corrosion, it’s a wise first diagnostic step, especially if you have communication codes like U0109.
Is this a new or used part?
This is a high-quality, inspected used OEM part that has been tested and loaded with the newest GM-certified software for your vehicle, ensuring reliable performance.