Restore Your Cadillac’s Performance with a VIN-Programmed Fuel Module
If your 2010-2012 Cadillac CTS is suffering from frustrating issues like stalling, extended cranking times, or a no-start condition, a failing Fuel System Control Module (FSCM) is a very common culprit. As a technician with over two decades of experience, I’ve seen these exact symptoms countless times. The FSCM is the brain of your fuel system, precisely controlling the voltage sent to the fuel pump. When it fails, it starves your engine of the fuel it needs, leading to poor performance, reduced fuel economy, and a lit Check Engine Light. Don’t let a faulty module leave you stranded or guessing at the problem.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost out of the repair by programming this module specifically to your vehicle’s VIN before it ships. This means you get the latest GM software updates for optimal performance and fuel efficiency, without needing an expensive trip to the dealership for programming. This is the same process we use in the shop to guarantee a seamless, effective repair. By choosing our pre-programmed 2010-2012 CTS FSCM, you’re getting a reliable fix that restores factory function right out of the box.
A Technician’s Notebook: The Intermittent Stall Case
A customer brought in a 2011 CTS with a problem that was driving them crazy: it would randomly stall at stoplights, but not every time. They had already replaced the fuel pump elsewhere, but the issue persisted. After hooking up my scan tool and monitoring live data, I noticed the fuel pump voltage was erratic. It wasn’t the pump; it was the signal telling the pump what to do. The culprit was a heat-sensitive FSCM. We swapped in a new, pre-programmed module, and the problem was solved instantly. This case highlights why correctly diagnosing the 2010-2012 CTS FSCM is critical to avoiding unnecessary and expensive repairs.
Is Your Cadillac Exhibiting These Fuel System Issues?
A failing FSCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Engine cranks but will not start
- ✔ Intermittent stalling, especially when coming to a stop or under load
- ✔ Reduced engine power and sluggish acceleration
- ✔ Check Engine Light illuminated with specific diagnostic trouble codes (DTCs)
- ✔ Common codes include P069E, P0230, or U0109 (Lost Communication with Fuel Pump Control Module)
- ✔ Inconsistent fuel pressure readings
A Straightforward Guide to Installation
Replacing the FSCM on your Cadillac CTS is a job most DIY enthusiasts can handle with basic tools. Our pre-programmed module makes it a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the 2010-2012 Cadillac CTS, the Fuel System Control Module is typically located in the left-hand (driver’s side) rear compartment of the trunk, behind the trim panel.
- Remove the Old Module: Carefully unplug the electrical connectors. Then, unbolt the module from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New Module: Mount your new, VIN-programmed FSCM in the same location and secure it with the original hardware.
- Connect and Finalize: Firmly plug in the electrical connectors until they click into place. Reconnect your battery terminal. The vehicle is now ready to start with no further programming required.
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 vehicle from the list below:
CTS (2010-2012)
Escalade, ESV, EXT (2010-2012)
Chevrolet:
Avalanche 1500 (2010-2012)
Captiva Sport (2012)
Colorado (2010-2012)
Express 1500 Van (2010-2012)
Impala (2012)
Silverado 1500 Pickup (2010-2012)
Suburban 1500 (2010-2012)
Tahoe (2010-2012)
Traverse (2010-2012)
GMC:
Acadia (2010-2012)
Canyon (2010-2012)
Savana 1500 Van (2010-2012)
Sierra 1500 / Denali 1500 (2010-2012)
Yukon / Yukon XL 1500 (2010-2012)
Buick:
Enclave (2010-2012)
LaCrosse (2010-2012)
Regal (2011-2012)
Other GM:
Hummer H3 (2010)
Saturn Outlook (2010)
Saturn Vue (2010)
Note: Some models have specific options (e.g., ‘w/o integrated trailer brake control’). Please match your part number or contact us with your VIN to confirm.
Take control of your repair and get your vehicle running reliably again. This pre-programmed 2010-2012 CTS FSCM is the professional-grade solution that saves you time and money.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is required to load the correct, vehicle-specific software from GM onto the module. This ensures perfect compatibility and function, eliminating the need for any additional programming after you receive the part.
Is this part difficult to install?
For most DIYers with basic tools, this is a straightforward installation. Since the module comes pre-programmed, it’s a simple plug-and-play process. Just locate the old module, swap it with the new one, and reconnect the battery.
How do I know if my FSCM is bad?
Common symptoms include the engine not starting, stalling, poor performance, and a Check Engine Light with codes like P069E or U0109. While these can point to other issues, the FSCM is a frequent cause on these GM models.
Will this fit other GM trucks and SUVs?
Yes, this module fits a very wide range of GM vehicles, including the Silverado, Sierra, Tahoe, Yukon, and many more. Please check the detailed compatibility list on this page or send us your VIN to be certain.
What is the difference between this and a used part?
A used module from a salvage yard is not programmed for your specific vehicle and may carry the same internal faults as your old one. Our module is tested, confirmed functional, and programmed with the latest software for your VIN, ensuring a reliable, long-term fix.