Is Your Cadillac Stalling, Hesitating, or Refusing to Start?
If you’re dealing with frustrating fuel delivery problems in your 2010-2012 Cadillac CTS, the culprit is often not the fuel pump itself, but this small electronic module that controls it. The Fuel System Control Module (FSCM), also known as a Fuel Pump Driver Module, is the brain behind your fuel pump. When it fails, it can leave you stranded with a car that cranks but won’t start, or cause dangerous stalling and hesitation while driving. Over my 20+ years in the shop, I’ve seen this exact scenario play out hundreds of times.
“A customer’s 2011 CTS was towed in last week with these exact symptoms. They had already spent hundreds replacing the in-tank fuel pump, but the car still wouldn’t run for more than a few seconds. A quick scan with my diagnostic tool revealed code U0109 – Lost Communication with Fuel Pump Control Module. We replaced the FSCM with one of our VIN-programmed units, and the car fired right up and ran perfectly. It’s a common misdiagnosis that costs people time and money.”
The Direct Solution: A VIN-Programmed Module
Don’t just replace the part; get the right solution. This FSCM isn’t just a component pulled from a shelf. We take a genuine GM module and flash it with the latest, most stable software release from General Motors, specifically matched to your vehicle’s 17-digit VIN. This process is critical for proper function and eliminates the compatibility issues and software glitches that plague non-programmed modules.
- โ Fixes Common Symptoms: A reliable fix for no-start conditions, engine stalling, hesitation on acceleration, rough idling, and the “Service Fuel System” message.
- โ Truly Plug-and-Play: Because we program it to your VIN before shipping, you can install it yourself. No expensive tow to the dealer and no additional programming fees.
- โ Latest GM Software: We load the most current calibrations, which often include factory improvements for fuel delivery logic and module longevity.
- โ Guaranteed Compatibility: This module is a direct replacement for part numbers 20850927, 20791901, 20827745, and 20877116.
Why Your 2010-2012 CTS FSCM Fails and How This Solves It
The original FSCMs on many GM vehicles, including the Cadillac CTS, are susceptible to failure from heat cycles and electronic component degradation over time. On the CTS, it’s located in the trunk area, but on many trucks and SUVs this part is mounted to the frame rail, where it’s exposed to water, salt, and road debris, causing corrosion and premature failure. Our modules provide a fresh, reliable replacement with updated software to ensure your fuel system operates as the engineers intended.
Simple, No-Hassle Installation Guide
You don’t need to be a master mechanic to perform this repair. Hereโs how simple it is:
- Safety First: Always disconnect the negative terminal from your car’s battery before starting any electrical work.
- Locate the Module: On your 2010-2012 CTS, the FSCM is located in the trunk, on the driver’s side. You will likely need to remove the side trim panel to access it.
- Disconnect and Remove: Carefully press the release tabs on the electrical connectors and pull them straight out. Then, remove the bolts or nuts holding the old module to its bracket.
- Install the New Module: Mount your new, pre-programmed FSCM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors back into the new module until they click firmly into place. Reconnect your battery terminal.
- Start Your Engine: Your vehicle is now ready to go. The repair is complete!
Ordering is simple. After you complete your purchase, just send us a message with your vehicle’s VIN. We’ll handle the programming and ship a module that’s ready to restore your car’s performance and reliability right out of the box.