Is Your 2012 Impala Stalling, Hesitating, or Refusing to Start?
There’s nothing more frustrating than turning the key and getting a crank-no-start condition, or having your engine suddenly lose power on the road. These are classic, tell-tale signs of a failing Fuel System Control Module (FSCM). This small but critical component is the brain behind your fuel pump, and when it malfunctions, it can leave you stranded. In my 20+ years as a technician, I’ve seen countless vehicles towed in with a perfectly good fuel pump, only to find the FSCM was the real culprit.
The Direct-Fit, Programmed Solution for Your Impala
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM module and program it specifically to your vehicle’s VIN before it ships. This means it arrives at your door loaded with the latest GM software updates, ensuring optimal performance and eliminating the need for an expensive trip to the dealership for programming. It’s the most efficient way to get your car running right again.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2012 Impala came in last week with these exact symptoms: it would crank all day but not fire up. The previous mechanic wanted to replace the in-tank fuel pumpโa costly, labor-intensive job. My first step was to hook up the scan tool. I saw the ECM commanding 55 PSI of fuel pressure, but the actual pressure sensor read zero. Instead of immediately blaming the pump, I checked the power and ground at the FSCM connector in the right rear quarter panel. They were good. This told me the FSCM was receiving the command but failing to activate the pump. We installed one of our pre-programmed modules, and the car fired up on the first try. It saved the customer hundreds of dollars and a lot of unnecessary work.”
Symptoms of a Failing 2012 Impala FSCM
If you’re experiencing any of the following, a faulty FSCM is a likely cause:
- โ Engine cranks but will not start
- โ Stalling or hesitation, especially under acceleration
- โ Reduced engine power and poor performance
- โ Check Engine Light with codes like P069E, P0230, or U0109
- โ Inconsistent fuel pressure readings
Plug-and-Play Installation: No Dealer Visit Required
Because we handle the programming, installation is a straightforward process you can do at home. For your 2012 Impala, the module is located behind the trim in the right rear quarter panel area of the trunk.
- Safety First: Disconnect the negative battery terminal.
- Access the Module: Remove the trunk liner and trim panels on the passenger (right-hand) side to expose the FSCM.
- Disconnect and Remove: Carefully unplug the electrical connectors. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed FSCM into place and securely reconnect the electrical connectors.
- Reassemble: Reinstall the trunk trim and reconnect the battery terminal.
- Final Check: Cycle the key a few times to prime the fuel system, then start the engine. Your problem should be solved.
Guaranteed Compatibility
This module is a direct replacement for several original part numbers, ensuring a perfect fit and function. It is compatible with part numbers: 20791901, 20827745, 20877116, and 20850927. By providing your VIN, you guarantee this part is correctly configured for your vehicle’s specific systems, taking all the guesswork out of the repair.