Restore Your Cadillac’s Performance and Reliability
Is your 2010-2012 Cadillac CTS experiencing frustrating issues like stalling, hesitation during acceleration, or a dreaded no-start condition? Before you condemn the fuel pump, the real culprit is often a faulty Fuel System Control Module (FSCM). This critical component regulates the voltage sent to your fuel pump, ensuring precise fuel pressure for optimal engine performance. When it fails, it can cause a host of intermittent and confusing problems that can leave you stranded. This module is the definitive solution, arriving pre-programmed with the latest GM software specifically for your vehicle’s VIN.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2011 CTS that came into my shop with a classic “ghost” problem. The owner complained of random stalling at red lights and occasional long cranks to get it started. No check engine light was on, but stored history codes showed a U0109 – Lost Communication with Fuel Pump Control Module. We could have chased our tails for hours, but experience pointed directly to the FSCM. These modules, especially in this era, are known to suffer from internal electronic failure. We swapped in a pre-programmed module, and the car ran perfectly. This isn’t just a part; it’s a permanent fix for a known issue, saving you from a costly and incorrect fuel pump replacement.
Is Your Cadillac Showing These Symptoms?
- âś” Engine cranks but won’t start
- âś” Stalling, especially when coming to a stop or at idle
- âś” Hesitation or stumbling under acceleration
- âś” Reduced engine power and poor performance
- âś” Check Engine Light with codes like P069E, P0230, P2635, or U0109
- âś” An audible fuel pump that isn’t running when the key is turned on
A Straightforward Guide to Installation
Replacing the 2010-2012 CTS FSCM is a job most DIY enthusiasts can handle. On the CTS, it’s conveniently located in the left-hand rear compartment (trunk area), 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.
- Locate the Module: Open the trunk and access the left-hand side compartment. You may need to remove a trim panel to expose the FSCM.
- Disconnect Electrical Connectors: Carefully press the release tabs and unplug the electrical connectors from the old module. Never pull on the wires themselves.
- Remove Old Module: Unbolt the old FSCM from its mounting bracket. Keep the hardware as you will need it for the new part.
- Install New Module: Mount your new, pre-programmed FSCM using the original hardware. Ensure it is secure.
- Reconnect and Finalize: Plug the electrical connectors firmly into the new module. Reconnect the battery terminal, and your installation is complete. Start the vehicle to confirm the repair.
Guaranteed Fitment for Your GM Vehicle
This FSCM, part number 20850927, is a direct replacement for a wide range of General Motors vehicles. It is also a compatible replacement for part numbers 20791901, 20827745, and 20877116. While this listing is focused on the 2010-2012 CTS FSCM, please verify your vehicle in the list below:
Cadillac:
CTS (2010-2012) – Located in LH rear compartment
Escalade, ESV, EXT (2010-2012) – Check specific IDs or options
Chevrolet:
Avalanche 1500 (2010-2012), Captiva Sport (2012), Colorado (2010-2012), Express 1500 Van (2010-2012), Impala (2012), Silverado 1500 (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)
Other GM Models:
Buick Enclave (2010-2012), LaCrosse (2010-2012), Regal (2011-2012); Hummer H3 (2010); Saturn Outlook (2010), Vue (2010)
Note: Location and specific fitment notes vary by model. Always confirm your part number or consult the detailed fitment list.
Frequently Asked Questions
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) is required so we can program the module with the exact software calibration and updates from GM for your specific vehicle. This ensures 100% correct functionality and compatibility, eliminating the need for a dealership visit.
Is this part difficult to install on my CTS?
No, the installation is straightforward for the Cadillac CTS. The module is located in the trunk area, not underneath the vehicle on the frame rail like many trucks. This makes access significantly easier for a DIY repair.
Will this fix a P069E code?
Yes, a faulty FSCM is the most common cause of a P069E code (Fuel Pump Control Module Requested MIL Illumination). Replacing the module with this pre-programmed unit is the standard, effective repair for that diagnostic trouble code.
What happens if I install it without programming?
An unprogrammed module will not work. The vehicle’s computer systems will not be able to communicate with it, and your engine will not start or run correctly. Our pre-programming service makes this a true plug-and-play solution.
Is this a new part?
Yes, this is a high-quality replacement part that has been tested and programmed with the latest software to ensure it meets or exceeds original equipment performance.