Is Your Truck Stalling or Refusing to Start? The Culprit Might Be Hiding on Your Frame Rail.
If your 2010-2012 Avalanche 1500 is giving you headaches with intermittent stalling, long crank times, or a complete no-start condition, you’re not alone. I’ve been a certified technician for over two decades, and one of the most commonโand most misdiagnosedโissues on these GM trucks is a failed Fuel System Control Module (FSCM). Many owners spend hundreds, even thousands, replacing the fuel pump, only to find the problem persists. The real issue is often this small electronic box, exposed to road salt, water, and vibration on the driver’s side frame rail.
A Story From My Shop
“A customer’s 2011 Silverado 1500 was towed in last week with the classic no-start symptom. He had already replaced the in-tank fuel pump himself. When we scanned it, we found code P069E – Fuel Pump Control Module Requested MIL Illumination. Instead of guessing, we went straight to the FSCM on the frame rail. The connector was full of green corrosion and the module itself was dead. We installed one of our pre-programmed modules, and the truck fired right up. Itโs a repair Iโve done hundreds of times, and itโs a textbook failure on this platform.”
The Direct Solution: A VIN-Programmed Avalanche 1500 Fuel Module
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine quality Fuel System Control Module and program it specifically to your truck’s Vehicle Identification Number (VIN). This means it arrives at your door with the latest GM software updates, ready for a true plug-and-play installation. You get to skip the expensive trip to the dealership for programming.
Common Symptoms of a Failing FSCM:
- โ Engine cranks but will not start
- โ Vehicle stalls unexpectedly while driving
- โ Hesitation or stumbling under acceleration
- โ “Service Fuel System” message on the instrument cluster
- โ Active trouble codes like P069E, P0230, or U0109
Plug-and-Play Installation: No Dealer Visit Required
You can get your truck back on the road in under an hour with basic hand tools. This module is typically 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 mounted to the inside of the driver’s side frame rail.
- Disconnect and Remove: Unplug the electrical connector and unbolt the module from the frame. It’s usually held on by two small bolts.
- Expert Pro Tip: Before you install your new module, take a moment to inspect the vehicle’s wiring harness connector. Look for any signs of green or white corrosion on the pins. Use a small pick and some electrical contact cleaner to gently clean them. A poor connection is the number one cause of repeat failures.
- Install the New Module: Bolt the new, pre-programmed module in place and securely plug in the electrical connector until it clicks.
- Final Step: Reconnect the battery terminal. Your truck is now ready to start with its fuel system operating as intended.
Guaranteed Compatibility
This module is a direct replacement for several part numbers, ensuring a perfect fit and function for your vehicle. It is compatible with part numbers: 20791901, 20827745, 20877116, and 20850927. Simply provide your VIN during checkout, and we’ll handle the rest, ensuring you receive a part that is 100% correct for your specific truck.