If your 2010-2012 Cadillac CTS is experiencing frustrating issues like engine stalling, a no-start condition, or a persistent “Service Fuel System” warning, a failing Fuel System Control Module (FSCM) is a very likely culprit. This critical component is the brain behind your fuel pump, regulating fuel pressure and delivery. When it fails, it can leave you stranded. Don’t let a small module cause a big headache—this is the reliable, straightforward fix you need.
This isn’t just a replacement part; it’s a complete solution. We professionally program this FSCM to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means it arrives at your door loaded with the latest GM software, ready for a direct, plug-and-play installation. You get to skip the expensive trip to the dealership and the hassle of needing a high-end scan tool for programming. For any DIYer or professional mechanic, this saves significant time, money, and frustration.
Case Study: A Tricky Diagnosis
I remember a 2011 CTS that came into the shop with intermittent stalling. The owner had already replaced the fuel pump, but the problem persisted. No codes were stored initially, which made it tricky. During a test drive with a scan tool connected, I saw the fuel pressure drop erratically right before it stalled. Back at the shop, we found the FSCM, located in the rear compartment, showed signs of corrosion on the casing. These modules, even when mounted inside the vehicle, can be susceptible to moisture and heat cycles over time, causing internal electronic failure. A new, properly programmed FSCM fixed the issue permanently. The customer was thrilled to have their car back and running reliably.
Is Your Cadillac Showing These Symptoms?
A faulty FSCM can manifest in several ways. If you’re noticing any of the following, it’s time to inspect your fuel system’s brain. This 2010-2012 CTS Fuel System Control Module is the definitive solution for these issues.
- ✔ Engine cranks but will not start
- ✔ Intermittent stalling, especially when warm
- ✔ Reduced engine power and poor acceleration
- ✔ Check Engine Light with fuel-related diagnostic trouble codes (DTCs)
- ✔ Common DTCs include P069E, P0230, P0606, or U0109 (Lost Communication with Fuel Pump Control Module)
- ✔ A “Service Fuel System” message on the driver information center
A Straightforward Guide to Installation
Installing your new FSCM is a job most DIY enthusiasts can handle with basic tools. For the 2010-2012 Cadillac CTS, the module is conveniently located in the left rear of the trunk compartment, making access much easier than on trucks where it’s on the frame rail.
- 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 left-side trim panel or cover 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. Ensure it is securely fastened.
- Reconnect and Finalize: Plug the electrical connector(s) firmly into the new module. Reinstall the trunk trim panel.
- Power Up: Reconnect the negative battery terminal. Your vehicle is now ready to start with its new, correctly programmed FSCM.
Guaranteed Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. We guarantee compatibility if your vehicle is listed below. Please provide your VIN upon purchase to ensure we program the correct software for your specific application. This module replaces part numbers 20791901, 20827745, 20877116, and 20850927.
- Cadillac CTS: 2010-2012 (LH rear compartment)
- Cadillac Escalade, ESV, EXT: 2010-2012 (Check fitment notes for specific IDs/options)
- Chevrolet Avalanche 1500: 2010-2012 (Check fitment notes for specific IDs/options)
- Chevrolet Colorado / GMC Canyon: 2010-2012 (Rear center frame)
- Chevrolet Express 1500 / GMC Savana 1500 Van: 2010-2012 (LH frame rail)
- Chevrolet Silverado 1500 / GMC Sierra 1500: 2010-2012 (Check fitment notes for specific IDs/options)
- Chevrolet Suburban 1500 / GMC Yukon XL 1500: 2010-2012 (Check fitment notes for specific IDs/options)
- Chevrolet Tahoe / GMC Yukon: 2010-2012 (Check fitment notes for specific IDs/options)
- And many more GM models including Acadia, Enclave, Traverse, LaCrosse, Impala, Regal, Captiva Sport, Hummer H3, Outlook, and Vue. Please verify your vehicle in the detailed list provided.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is essential. We use it to load the precise, factory-correct software from GM for your vehicle’s specific configuration. This step is what makes the installation plug-and-play and ensures proper function without a trip to the dealer.
Is this part difficult to install on my 2010-2012 CTS?
No, on the Cadillac CTS, it’s one of the easier locations. The module is located behind the trim panel in the left side of the trunk. With basic hand tools, most people can complete the replacement in under an hour.
What’s the difference between this and a used part from a junkyard?
There are two huge differences. First, a used part will be programmed to the donor vehicle and will not work correctly in your car without being reprogrammed by a dealer. Second, our module is programmed with the very latest GM software updates, which often correct the flaws that caused the original part to fail. A used part will have the old, potentially faulty software.
Will this 2010-2012 CTS Fuel System Control Module fix my P069E code?
Yes, the DTC P069E (Fuel Pump Control Module Requested MIL Illumination) is one of the most common codes indicating a failed FSCM. While you should always perform a complete diagnosis, a faulty FSCM is the leading cause for this code, and replacing it with this programmed unit is the standard, reliable repair.