Is your 2010-2012 Buick Enclave experiencing frustrating and unpredictable fuel issues? A car that cranks but refuses to start, stalls in traffic, or displays a ‘Reduced Engine Power’ message can be more than just an inconvenience—it’s a safety concern. Before you assume the worst and start pricing out an expensive fuel pump replacement, consider the electronic brain of the operation: the Fuel System Control Module (FSCM).
As a technician with over two decades of experience, I’ve seen countless vehicle owners and even professional shops chase their tails, replacing perfectly good fuel pumps when the real culprit was a faulty FSCM. This module is responsible for precisely managing the voltage sent to your fuel pump. When it fails, it can starve your engine of fuel, leading to a host of performance problems. Our 2010-2012 Enclave Fuel Module is the definitive solution, arriving at your door pre-programmed and ready for installation.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Enclave with an intermittent stalling problem that was driving them crazy. They had already paid another shop to replace the in-tank fuel pump, but the issue persisted. After hooking up my diagnostic scanner, I noticed the fuel pressure would drop erratically under load. Instead of a mechanical fault, the data pointed to an electrical command issue. We located the FSCM on the rear crossmember, and a quick tap test caused the engine to stumble immediately. The original module was failing internally when it got hot. We installed a VIN-programmed FSCM, and the vehicle ran perfectly, solving a problem that had stumped others and cost the owner unnecessary expense.
Is Your Enclave Showing These Signs of a Bad FSCM?
A failing Fuel System Control Module can mimic other component failures. Here are the most common symptoms I see in the shop:
- ✔ Engine cranks but will not start
- ✔ Stalling, especially under acceleration or when warm
- ✔ Rough idle or hesitation
- ✔ ‘Reduced Engine Power’ warning light on the dash
- ✔ Check Engine Light with diagnostic trouble codes (DTCs) such as P069E, P0230, or U0109
A Straightforward Guide to Installation
One of the greatest benefits of this module is that we handle the complex programming. This turns a dealership-level job into a simple DIY repair you can perform with basic hand tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the FSCM: On the 2010-2012 Enclave, you will find the module mounted to the rear crossmember, typically on the driver’s side. It’s a small black box with an electrical connector.
- Disconnect and Remove: Carefully press the release tab on the electrical harness and pull it straight off the module. Then, remove the bolts or nuts securing the old FSCM to the frame.
- Install the New Module: Mount your new, pre-programmed FSCM in the exact same position and secure it with the original hardware.
- Final Connections: Firmly plug the electrical connector back into the new module until it clicks. Reconnect your battery terminal. Your installation is complete—no programming necessary.
Will This Fit My Vehicle?
This module is a direct replacement for part number 20850927 and is also compatible with 20791901, 20827745, and 20877116. It is guaranteed to fit a wide range of General Motors vehicles, including:
- ✔ Buick: Enclave (2010-2012), LaCrosse (2010-2012), Regal (2011-2012)
- ✔ Cadillac: CTS (2010-2012), Escalade / ESV / EXT (2010-2012)
- ✔ 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)
- ✔ Hummer: H3 (2010)
- ✔ Saturn: Outlook (2010), Vue (2010)
Please provide your vehicle’s VIN at checkout to ensure we load the correct, most up-to-date software for your specific application.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact GM software calibration for your Enclave’s specific options. This ensures the module communicates perfectly with your vehicle’s computer system, providing flawless performance right out of the box.
Is this part truly plug-and-play?
Yes. Because we pre-program the module to your VIN, you do not need to take it to a dealership for expensive flashing. Simply bolt it on, plug it in, and you’re ready to go.
What happens if I don’t replace a failing FSCM?
Ignoring a bad FSCM can lead to more than just poor performance. It can cause a no-start condition that leaves you stranded, and in some cases, can put extra strain on your fuel pump, potentially leading to its premature failure.
Can I install this myself?
Absolutely. For most DIY enthusiasts with basic hand tools, this is a straightforward repair that can be completed in under an hour. Our installation guide provides the key steps to get the job done correctly.
Are other part numbers compatible?
Yes, this module is a direct replacement for several part numbers, including 20791901, 20827745, 20877116, and 20850927. We ensure the one you receive is correct for your vehicle.