Restore Your Cadillac’s Performance and Reliability
Is your 2010-2012 Cadillac CTS experiencing frustrating issues like engine stalling, hesitation during acceleration, or a dreaded no-start condition? Before you suspect the fuel pump, the real culprit is often a faulty Fuel System Control Module (FSCM). As a technician with over two decades of experience, I’ve seen this exact scenario countless times. The FSCM is the brain that precisely manages fuel pressure and delivery to your engine. When it fails, it can leave you stranded and facing a confusing diagnosis. This module is the definitive, hassle-free solution to get your vehicle back on the road with confidence.
We take the guesswork and expensive dealer visits out of the equation. This genuine OEM replacement 2010-2012 CTS FSCM arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest GM software updates, ensuring optimal performance and compatibility right out of the box. This isn’t just a part; it’s a complete, ready-to-install fix that restores the factory-intended fuel management for peak efficiency and power.
Real-World Repair Story
Real-World Repair Story
A customer brought in their 2011 CTS with a classic, intermittent problem. It would run fine for days, then suddenly stall at a stoplight or refuse to start after being parked. They had already replaced the fuel pump elsewhere, but the issue persisted. After hooking up my scan tool, I saw no communication with the fuel module (DTC U0109). A quick check of the wiring confirmed it was good, pointing straight to a failed FSCM. Instead of sending them to a dealer for a costly programming session, we installed one of our VIN-programmed modules. The car started immediately, and the problem never returned. This is a common story, and it highlights why solving the core electronic issue first is crucial.
Common Signs of a Failing FSCM
- ✔ Engine stalling, especially when coming to a stop or at idle.
- ✔ Vehicle cranks but refuses to start (no-start condition).
- ✔ Noticeable hesitation or sputtering during acceleration.
- ✔ Reduced engine power and poor fuel economy.
- ✔ Check Engine Light with codes such as P069E, P0230, or U0109 (Lost Communication With Fuel Pump Control Module).
A Straightforward Guide to Installation
Installing your new 2010-2012 CTS FSCM is a manageable job for a confident DIYer. On the Cadillac CTS, the module is typically located in the left-hand (driver’s side) rear compartment area of the trunk.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Open the trunk and remove the necessary trim panels on the driver’s side to expose the FSCM.
- Disconnect and Remove: Carefully unplug the electrical connector(s) from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed FSCM into place. Reconnect the electrical connector(s), ensuring they click securely.
- Final Steps: Re-install the trunk trim panels you removed. Reconnect the negative 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. While this listing focuses on the Cadillac CTS, it is also compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm.
– Cadillac CTS (2010-2012) – Fuel Pump; (LH rear compartment)
Also fits select models of:
– Acadia, Avalanche 1500, Enclave, Escalade, Sierra 1500, Silverado 1500, Suburban 1500, Tahoe, Traverse, Yukon, and many more. Please check the full fitment list or your original part number to ensure compatibility.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
Real-World Repair Story
A customer brought in their 2011 CTS with a classic, intermittent problem. It would run fine for days, then suddenly stall at a stoplight or refuse to start after being parked. They had already replaced the fuel pump elsewhere, but the issue persisted. After hooking up my scan tool, I saw no communication with the fuel module (DTC U0109). A quick check of the wiring confirmed it was good, pointing straight to a failed FSCM. Instead of sending them to a dealer for a costly programming session, we installed one of our VIN-programmed modules. The car started immediately, and the problem never returned. This is a common story, and it highlights why solving the core electronic issue first is crucial.