Is your 2010-2012 Silverado 1500 stalling, hesitating, or refusing to start? Before you condemn the fuel pump, the real culprit is often the Fuel System Control Module (FSCM). I’ve seen it hundreds of times in the shop: a perfectly good fuel pump gets replaced, but the problem persists because the module that controls it has failed. This FSCM is the reliable, permanent fix you need, saving you from frustrating misdiagnoses and repeat repairs.
The biggest headache with replacing an FSCM is the required programming. A new module from the dealership is just a paperweight until it’s flashed, forcing you into another appointment and extra cost. We eliminate that completely. When you purchase from us, we flash the module with the latest official GM software, specifically matched to your truck’s VIN. It arrives at your door ready for a true plug-and-play installation. No dealer visits, no special scan tools, no extra fees. Just a straightforward repair that gets your truck running right.
From the Diagnostic Bay
A customer brought in an ’11 Sierra with a classic no-start condition. They’d already replaced the in-tank fuel pump themselves, but it didn’t solve the issue. They were frustrated and out a few hundred dollars. We hooked up the scanner and saw DTC U0109 – Lost Communication with Fuel Pump Control Module. Instead of just throwing parts at it, we checked the FSCM connector for power, ground, and data line integrity—all were good. The module itself, mounted on the frame rail and exposed to years of moisture and road salt, had failed internally. We installed a VIN-programmed module, and the truck fired up on the first try. This is a perfect example of why diagnosing the system, not just the symptom, is key.
Is Your Truck Showing These Symptoms?
A failing FSCM can mimic a bad fuel pump. If you’re experiencing any of these issues, this module is the likely solution:
- ✔ Engine cranks but won’t start
- ✔ Stalling, especially under load or when coming to a stop
- ✔ Severe hesitation or sputtering during acceleration
- ✔ Reduced engine power and poor performance
- ✔ Check Engine Light with codes like P069E, P0230, P0627, or U0109
- ✔ Inconsistent fuel pressure readings
A Straightforward Guide to Installation
Installing your new 2010-2012 Silverado 1500 FSCM is a job most DIYers can handle in under an hour with basic hand tools. On most GM trucks and SUVs, it’s located on the driver’s side frame rail, near the spare tire.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: Find the old FSCM on the inside of the driver’s side frame rail. It’s a small black box with a single electrical connector.
- Disconnect and Remove: Unplug the electrical harness. You may need a small flathead screwdriver to release the locking tab. Then, remove the bolts or nuts (typically 10mm or 13mm) holding the module to the frame.
- Install the New Module: Mount your new, pre-programmed module in the same location and tighten the fasteners.
- Reconnect: Plug the electrical connector firmly into the new FSCM until it clicks into place.
- Final Step: Reconnect the negative battery terminal. Start the vehicle to confirm the repair is successful.
Verified Vehicle Compatibility
This module is a direct-fit replacement for multiple GM vehicles and interchanges with part numbers 20791901, 20827745, 20877116, and 20850927. Please provide your VIN upon purchase to ensure correct programming. It is compatible with the following models:
AVALANCHE 1500 10-12 (LH frame rail)
CANYON 10-12 (rear center frame)
CAPTIVA SPORT 12 (LH rear compartment)
COLORADO 10-12 (rear center frame)
CTS 10-12 (LH rear compartment)
ENCLAVE 10-12 (rear crossmember)
ESCALADE / ESV / EXT 10-12 (LH frame rail)
EXPRESS 1500 VAN 10-12 (LH frame rail)
HUMMER H3 10 (rear frame)
IMPALA 12 (RH rear quarter panel)
LACROSSE 10-12 (RH rear trunk)
OUTLOOK 10
REGAL 11-12 (LH rear quarter interior)
SAVANA 1500 VAN 10-12 (LH frame rail)
SIERRA 1500 PICKUP 10-12 (LH frame rail)
SIERRA DENALI 1500 11-12 (LH frame rail)
SILVERADO 1500 PICKUP 10-12 (LH frame rail)
SUBURBAN 1500 10-12 (LH frame rail)
TAHOE 10-12 (LH frame rail)
TRAVERSE 10-12 (rear crossmember)
VUE 10 (RH rear engine compartment)
YUKON / YUKON XL 1500 10-12 (LH frame rail)
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Your vehicle’s VIN is required for us to load the correct, vehicle-specific GM software onto the module. This step is what makes the installation plug-and-play and ensures perfect communication with your vehicle’s other computers.
Is this part difficult to install myself?
Not at all. For most trucks like the Silverado and Sierra, it’s one of the easier repairs. It’s typically held on by two bolts on the frame rail and has one electrical connector. Basic hand tools are all you need.
What is the difference between this and a fuel pump?
The fuel pump is the mechanical device inside your gas tank that moves fuel. This Fuel System Control Module (FSCM) is the computer that tells the fuel pump how fast to run based on engine demand. The FSCM often fails before the pump does.
Will this fix a P069E check engine light code?
Yes, P069E (‘Fuel Pump Control Module Requested MIL Illumination’) is one of the most common diagnostic trouble codes indicating a faulty FSCM. Replacing the module is the standard, correct repair for this code, assuming wiring is intact.
My part number is 20877116. Will this one work?
Yes. This module is a direct replacement for part numbers 20791901, 20827745, 20877116, and 20850927. We program it to function identically to the original part in your specific vehicle.