Restore Your Vehicle’s Performance with a Plug-and-Play Fuel Module
There’s nothing more frustrating than a vehicle that cranks but won’t start, or worse, stalls in the middle of traffic. As a technician with over two decades of experience, I’ve seen this scenario countless times. The culprit is often not the fuel pump itself, but its electronic brain: the Fuel System Control Module (FSCM). This critical component regulates the voltage sent to the fuel pump, ensuring your engine gets the precise amount of fuel it needs. When it fails, it can cause a host of perplexing and dangerous issues. This is the definitive solution for your 2010-2012 CTS Fuel Module and a wide range of other GM vehicles suffering from these exact problems.
We take the guesswork and extra cost out of the repair. Unlike a part from the dealership, this FSCM arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This means no expensive trips to the dealer for programming, and no need for specialized scan tools. It’s a true plug-and-play fix designed to get you back on the road with confidence.
Case Study: The ‘Bad’ Fuel Pump That Wasn’t
A 2011 Silverado was towed into my bay with a classic no-start condition. The owner had already replaced the fuel pump himself, but the truck still wouldn’t fire up. He was convinced he got a faulty pump. I hooked up my scanner and found DTC P069E (Fuel Pump Control Module Commanded On) and U0109 (Lost Communication With Fuel Pump Control Module). I wasn’t getting any fuel pressure. Instead of condemning the new pump, I went straight to the FSCM on the frame rail. It was corroded and showed signs of water intrusion—a common failure point. After installing a pre-programmed module, the truck fired up on the first try. This simple part saved the customer from buying another expensive fuel pump and hours of misdiagnosis.
Common Symptoms of a Failing GM Fuel System Control Module
- ✔ Engine cranks but will not start
- ✔ Stalling, especially under load or when warm
- ✔ Rough idle or hesitation during acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light illuminated with specific codes
- ✔ Common Diagnostic Trouble Codes (DTCs): P069E, P0230, P2635, U0109
A DIY-Friendly Guide to Your CTS Fuel Module Swap
Replacing the 2010-2012 CTS Fuel Module is a straightforward job that most DIYers can handle in their own garage. For the Cadillac CTS, the module is conveniently located in the trunk.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Access the Module: Open the trunk and remove the trim panel on the left-hand (driver’s) side to expose the module.
- Disconnect: Carefully unplug the electrical connectors from the old FSCM. Press the release tabs firmly to avoid breaking them.
- Remove Old Module: Unbolt the module from its mounting bracket. It’s typically held in place by a couple of small bolts or nuts.
- Install New Module: Mount your new, pre-programmed FSCM onto the bracket and secure it with the original hardware.
- Reconnect: Plug the electrical connectors firmly into the new module. You should hear a click as they lock into place.
- Final Steps: Reinstall the trunk trim panel and reconnect the negative battery terminal. Your installation is complete!
Confirmed Vehicle Compatibility List
This module is a direct-fit replacement for a wide array of General Motors vehicles. It is compatible with part numbers 20791901, 20827745, 20877116, and 20850927. Please verify your vehicle is on the list below. If you have any questions, provide us with your VIN before ordering.
This part fits many 2010-2012 models including Cadillac CTS, Escalade; Chevrolet Avalanche, Silverado, Tahoe, Suburban, Colorado; GMC Sierra, Yukon, Canyon; Buick Enclave, LaCrosse; and more. The precise location varies from the LH rear compartment on a CTS to the LH frame rail on most trucks and SUVs.
How does the VIN programming work?
How does the VIN programming work?
After you place your order, simply send us your vehicle’s 17-digit VIN. Our technicians will use it to load the latest, most stable GM-approved software directly onto the module. This ensures perfect communication with your vehicle’s other computers, just like a new part from the factory.
Is this part difficult to install?
Not at all! Because the module comes pre-programmed, the installation is purely mechanical. It’s a simple ‘unplug and replace’ job. For most vehicles, it requires basic hand tools and can be completed in under an hour, saving you significant labor costs.
Will this fix a P069E or U0109 code?
Yes, in the vast majority of cases. DTCs P069E and U0109 are hallmark indicators of a failing or non-communicative Fuel System Control Module. Replacing a faulty FSCM with this tested unit is the standard, reliable repair for these codes.
Why not just buy a used one from a junkyard?
A used module will be programmed for the donor vehicle, not yours, which can cause communication errors or a no-start condition. Furthermore, junkyard parts have an unknown history and are often exposed to the same elements that caused the original to fail. Our module is tested and programmed with fresh software for guaranteed performance.