Restore Your Truck’s Performance with a VIN-Programmed Fuel Module
Is your 2011-2012 GMC Sierra Denali 1500 suddenly stalling, hesitating, or refusing to start? Before you condemn the fuel pump, the real culprit is often the Fuel System Control Module (FSCM). This critical component regulates voltage to the fuel pump, and when it fails, it can cause a host of frustrating and intermittent issues that can leave you stranded. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and high dealership costs out of the equation by programming this module specifically to your truck’s VIN with the latest GM software updates before it even leaves our facility.
Case Study: The P069E Puzzle
I remember a 2011 Sierra that came into my shop a few years back. The owner had already spent a fortune replacing the in-tank fuel pump, convinced it was the problem. The truck would run fine for a day, then suddenly die at a stoplight. The code was a persistent P069E (Fuel Pump Control Module Commanded On). The new pump didn’t fix it because the FSCM, mounted on the frame rail and exposed to years of road salt and moisture, was failing internally. It couldn’t provide a steady, correct voltage. We installed one of our VIN-programmed modules, and the problem was solved in 20 minutes. He could have saved himself $800 and a weekend of frustration by starting with the real source of the failure.
Is Your Truck Showing These Symptoms?
A failing FSCM can mimic a bad fuel pump. If you’re experiencing any of the following, this module is the likely solution, especially if you have related diagnostic trouble codes (DTCs).
- ✔ Engine cranks but won’t start
- ✔ Stalling, especially when coming to a stop or under load
- ✔ Severe hesitation or sputtering during acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light with codes like P069E, P0230, or U0109 (Lost Communication with FSCM)
Plug-and-Play Installation: Get Back on the Road Fast
This 2011-2012 Sierra Denali FSCM is designed for a straightforward installation. Because we program it to your VIN, there are no extra steps or expensive scan tools required. Just plug it in and turn the key.
- Safety First: Disconnect the negative terminal from your truck’s battery.
- Locate the Module: On most GM trucks like the Sierra, the FSCM is mounted on the driver’s side frame rail, typically above the spare tire.
- Disconnect and Remove: Unplug the electrical connectors. Be gentle with the locking tabs. Then, remove the bolts or nuts holding the old module to the frame.
- Install the New Module: Mount your new, pre-programmed FSCM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly into the new module. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 10 seconds before starting the engine. This allows the system to prime. Start your truck and enjoy restored performance and reliability.
Verified Vehicle Compatibility
This module, part number 20827745, is a direct replacement for several original equipment part numbers, including 20791901, 20877116, and 20850927. It offers broad compatibility across a wide range of GM vehicles. Please verify your vehicle from the list below. Note that location can vary from frame rail to trunk compartment depending on the model.
…and more. Please check the detailed list or contact us with your VIN to confirm.
Frequently Asked Questions About the 2011-2012 Sierra Denali FSCM
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you’ll need to provide us with your vehicle’s 17-digit VIN. Our technicians use this to load the latest, correct GM software onto the module, making it a perfect match for your truck’s specific configuration.
Is this a plug-and-play part?
Yes. Because it arrives pre-programmed, you do not need to take it to a dealer or mechanic for additional programming. Simply install it, and you’re ready to go. This saves you significant time and money.
Will this fix a P069E code?
In the vast majority of cases, yes. The P069E code points directly to a performance issue within the Fuel Pump Control Module circuit. A failing FSCM is the most common cause of this code on GM trucks and SUVs.
Where is this module located on my 2012 Sierra Denali?
On the 2011-2012 Sierra Denali 1500, you will typically find the FSCM mounted to the inside of the frame rail on the driver’s side, near the rear axle and spare tire.
Are other part numbers compatible?
Yes, this module is a direct, updated replacement for part numbers 20791901, 20877116, and 20850927. It contains the most current software to address known issues.