Is Your GM Truck or SUV Stalling, Running Rough, or Refusing to Start?
If you’re dealing with frustrating engine performance issues on your 2010-2012 GM vehicle, the culprit is often a failed Fuel System Control Module (FSCM). As a technician with over 20 years of experience, I’ve seen this exact problem countless times. These modules, especially on trucks like the Silverado, Sierra, and Tahoe, are typically mounted on the frame rail where they are constantly exposed to water, road salt, and vibrations, leading to internal failure and corrosion at the connector.
The Telltale Signs of a Failing FSCM
A faulty FSCM can mimic a bad fuel pump, leading to expensive misdiagnosis. Before you consider dropping the fuel tank, check if your vehicle is showing any of these classic symptoms:
- โ Engine cranks but will not start
- โ Stalling, especially under load or after hitting a bump
- โ Hesitation or sputtering during acceleration
- โ Reduced engine power and poor fuel economy
- โ Check Engine Light with diagnostic trouble code P069E (Fuel Pump Control Module Commanded OFF)
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2011 Sierra 1500 was towed in last month with a classic ‘crank, no-start’ condition. The scan tool immediately flagged code P069E. Instead of jumping straight to the fuel pump, we went to the FSCM on the driver’s side frame rail. Sure enough, the module’s casing was swollen and the connector pins were green with corrosion from moisture intrusion. This is a textbook failure I’ve diagnosed on hundreds of these GM trucks and SUVs. A new, properly sealed module fixed the issue instantly.”
The Simple, Dealer-Free Solution: A VIN-Programmed GM Fuel Control Module
Don’t waste time and money on a trip to the dealership. This Fuel System Control Module is the direct, plug-and-play solution you need. We take the hassle out of the repair by professionally programming the module to your vehicle’s specific VIN before we ship it. This ensures it communicates perfectly with your vehicle’s computer (ECM) right out of the box, loaded with the latest GM software updates for optimal performance and longevity.
Plug-and-Play Installation: No Dealer Visit Required
You can get your vehicle back on the road in under an hour with basic hand tools. Hereโs a general guide for a typical truck installation:
- Safety First: Disconnect the negative battery terminal.
- Locate the Module: On most trucks and SUVs (Silverado, Tahoe, Yukon, etc.), the FSCM is mounted on the driver’s side frame rail, usually above the spare tire. On other models like the CTS or LaCrosse, it may be in the trunk or rear compartment.
- Disconnect and Remove: Carefully unplug the electrical connector. Inspect it for any corrosion and clean it with an electrical contact cleaner if necessary. Then, unbolt the old module from its bracket.
- Install the New Module: Bolt your new, pre-programmed FSCM into place. Apply a small amount of dielectric grease to the connector pins to protect against future moisture, then plug it in securely.
- Final Steps: Reconnect the battery terminal. The vehicle may require a few key cycles to re-learn parameters, but no special tools or dealer programming are needed.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles and is guaranteed to function correctly if your original part number is one of the following:
- 20877116
- 20791901
- 20827745
- 20850927
IMPORTANT: To ensure a perfect match, please provide your 17-digit VIN in the notes at checkout or send us a message after your purchase. We cannot ship your part until we have programmed it.