Restore Your Acadia’s Performance and Reliability
Is your 2010-2012 GMC Acadia suddenly stalling, refusing to start, or showing a ‘Service StabiliTrak’ message along with engine hesitation? Before you spend a fortune replacing the fuel pump, consider the real culprit: a failing Fuel System Control Module (FSCM). As a technician with over two decades of experience, I’ve seen countless vehicle owners and even professional shops misdiagnose these symptoms. The FSCM, also known as a fuel pump driver module, is the electronic brain that tells your fuel pump how much pressure to deliver. When it fails, it starves your engine of fuel, leading to a host of frustrating and intermittent problems.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM module and program it with the very latest software updates specific to your vehicle’s VIN. This critical step, which normally requires an expensive trip to the dealership, is done for you before we ship. This ensures perfect communication with your vehicle’s computer and corrects common factory software bugs that may have contributed to the original failure. By installing our pre-programmed 2010-2012 Acadia Fuel Module, you’re not just fixing the problem—you’re ensuring long-term reliability.
Case Study: A Tricky Diagnosis
I remember a 2011 Acadia that came into my shop. The owner had already replaced the in-tank fuel pump, but the vehicle still had a persistent no-start condition after sitting for a few hours. The fuel pressure would read fine initially, then drop off. We scanned it and found a U0109 (Lost Communication With Fuel Pump Control Module) code. Instead of throwing more parts at it, we inspected the FSCM on the rear crossmember. It showed clear signs of water intrusion and corrosion—a common failure point. A new, pre-programmed module fixed the issue instantly. This experience highlights why diagnosing the FSCM first can save hundreds of dollars and hours of frustration.
Common Signs of a Failing FSCM
- ✔ Engine cranks but will not start
- ✔ Stalling, especially under load or when warm
- ✔ Hesitation or stumbling during acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light with codes like P069E, U0109, or P0230
- ✔ Inaccurate fuel gauge readings
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery.
- ✔ Locate the Module: On the 2010-2012 Acadia, the FSCM is typically mounted on the rear subframe/crossmember, near the fuel tank. On trucks and vans, it’s often on the driver’s side frame rail.
- ✔ Disconnect and Remove: Unplug the electrical connectors. Be gentle with the locking tabs. Then, remove the bolts or nuts holding the old module in place.
- ✔ Install the New Module: Mount your new, pre-programmed 2010-2012 Acadia Fuel Module in the same location and secure it with the original hardware.
- ✔ Reconnect: Firmly plug in the electrical connectors until they click into place.
- ✔ Final Step: Reconnect the negative battery terminal. The vehicle is now ready to start with no further programming required.
Verified Vehicle Compatibility
This module, part number 20850927, is a direct replacement for part numbers 20791901, 20827745, and 20877116. It fits a wide range of GM vehicles. While we focus on the 2010-2012 Acadia Fuel Module, please verify your specific model in the list below. Remember to provide your VIN upon purchase for correct programming.
Fits: 2010-2012 GMC Acadia, 2010-2012 Chevrolet Traverse, 2010 Buick Enclave, 2010-2012 Cadillac CTS, 2010-2012 Chevrolet Silverado/GMC Sierra 1500, 2010-2012 Chevrolet Tahoe/Suburban, 2010-2012 GMC Yukon/Yukon XL, 2010-2012 Cadillac Escalade, and many more. Please check the detailed fitment data to confirm.
Frequently Asked Questions
Do I need to take this module to a dealer to be programmed?
No. This is the biggest benefit of our service. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready for a plug-and-play installation.
Is this part difficult to install for a DIYer?
For most individuals with basic mechanical skills, this is a very manageable job. It typically involves removing a few bolts and unplugging connectors. The location on the Acadia’s rear crossmember is generally accessible.
What is the difference between an FSCM and a fuel pump?
The fuel pump is a mechanical device inside your fuel tank that moves fuel. The FSCM is the electronic controller that tells the fuel pump how fast to run and how much pressure to create based on engine demand.
Will this fix a P069E trouble code?
Yes, DTC P069E (Fuel Pump Control Module Requested MIL Illumination) is one of the most common codes indicating a failed FSCM. Replacing the module is the standard, correct repair for this code.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory software and calibration files for your specific vehicle. This ensures the module works perfectly with your engine, transmission, and other systems.