Restore Reliable Starting and Performance to Your GM Vehicle
If you’re dealing with frustrating engine stalls, a car that won’t start, or a persistent Check Engine Light, a failing Fuel System Control Module (FSCM) is often the hidden culprit. As an experienced technician, I’ve seen countless vehicle owners mistakenly replace a perfectly good fuel pump when the issue was this critical electronic component. This module, part number 20850927, is the definitive solution to restore proper fuel delivery and engine stability for your 2012 Chevrolet Impala and a wide range of other GM vehicles.
A Technician’s Notebook: The $800 Misdiagnosis
A customer brought in a 2011 Silverado 1500 with a classic no-start condition. Another shop had quoted them nearly $800 to drop the fuel tank and replace the pump. But the symptoms weren’t quite right. The truck would sometimes start and run for a few minutes before sputtering out. I hooked up my scan tool and found code P069E – Fuel Pump Control Module Requested MIL Illumination. Instead of dropping the tank, I first checked the FSCM, which is mounted on the frame rail. It showed signs of corrosion from road salt and moisture. We replaced the module with a pre-programmed unit like this one, and the truck fired right up and ran perfectly. A 20-minute fix saved the customer hundreds of dollars and a lot of unnecessary work.
Is Your Vehicle Showing These Signs of a Bad FSCM?
A failing fuel module can cause a variety of symptoms that are easy to misdiagnose. Before you assume it’s the fuel pump, see if your vehicle is experiencing any of these common issues. A faulty 2012 Impala Fuel Module can be the root cause.
- ✔ Engine cranks but will not start
- ✔ Intermittent stalling, especially under load or when warm
- ✔ Rough idle or engine hesitation upon acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light is on with diagnostic trouble codes (DTCs) such as P069E, P0230, or U0109 (Lost Communication with Fuel Pump Control Module)
The Plug-and-Play Advantage: No Dealer Visit Required
The biggest challenge with replacing modern vehicle electronics is the need for expensive, dealer-specific programming. We eliminate that hassle. When you purchase this FSCM, you simply provide us with your vehicle’s 17-digit VIN. Our certified technicians will then flash the module with the latest, most stable software directly from GM. It arrives at your door ready to be installed, saving you the time, cost, and headache of a trip to the dealership. This ensures perfect communication between the module and your vehicle’s other computers, like the ECM, for flawless operation.
DIY-Friendly Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the Module: On the 2012 Impala, the FSCM is typically located in the trunk, behind the trim on the right-hand (passenger) side quarter panel. On trucks and SUVs, it’s usually mounted on the driver’s side frame rail, near the spare tire.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. Then, remove the bolts or nuts holding the old module to the chassis.
- ✔ Install the New Module: Mount your new, pre-programmed FSCM in the same location and secure it with the original hardware.
- ✔ Reconnect and Test: Plug the electrical connectors firmly into the new module. Reconnect the negative battery terminal. Turn the key to the ‘On’ position for 10 seconds before starting to allow the system to prime, then start the engine to verify the repair.
Verified Compatibility for Your Vehicle
This module is a direct replacement for multiple part numbers, including 20791901, 20827745, 20877116, and 20850927. It offers guaranteed fitment for a vast array of GM models. Please check the list below to confirm your vehicle.
GMC: Acadia (10-12), Canyon (10-12), Savana 1500 Van (10-12), Sierra 1500 / Denali 1500 (10-12), Yukon / Yukon XL 1500 (10-12)
Cadillac: CTS (10-12), Escalade / ESV / EXT (10-12)
Buick: Enclave (10-12), LaCrosse (10-12), Regal (11-12)
Other: Hummer H3 (10), Saturn Outlook (10), Saturn Vue (10)
Note: Some models have specific options (e.g., ‘w/o integrated trailer brake control’). Please verify your vehicle’s configuration.
Frequently Asked Questions
What does a Fuel System Control Module (FSCM) do?
The FSCM, or fuel pump driver module, is a small computer that controls the voltage sent to your vehicle’s electric fuel pump. By varying the voltage, it precisely regulates fuel pressure and flow based on engine demand, which improves efficiency and performance.
Why do I need to provide my VIN?
Every GM vehicle has specific software calibrations. Providing your VIN allows us to program this module with the exact software for your vehicle’s make, model, year, and options. This ensures it works perfectly right out of the box without any additional programming.
Is this a simple part to replace for a DIY mechanic?
Yes, for most vehicles this is a very straightforward replacement. The module is typically in an accessible location (like the frame rail or inside the trunk) and is held on by a few bolts. Since our module comes pre-programmed, it’s a true plug-and-play repair.
Will this fix a P069E code?
In the vast majority of cases, yes. The DTC P069E specifically points to a fault within the Fuel Pump Control Module’s internal circuitry or its request to the ECM. Replacing a faulty FSCM is the standard, correct repair for this code.
Where is the module on my 2012 Impala?
On the 2012 Chevrolet Impala, the FSCM is located inside the vehicle. You will find it in the trunk, mounted behind the carpeted trim panel on the passenger-side (RH) quarter panel area.
Is this a genuine OEM part?
This is a high-quality replacement part that is programmed using genuine GM software updates. It is designed to meet or exceed original equipment specifications for performance and reliability, providing a dependable and cost-effective solution.