Is Your GM Truck or SUV Stalling, Hesitating, or Refusing to Start?
If you’re experiencing frustrating fuel delivery issues with your 2008-2009 Chevrolet Avalanche, GMC Sierra, or other compatible GM vehicle, a faulty Fuel Pump Control Module (FPCM) is a very common culprit. This critical component, also known as a Fuel System Control Module (FSCM), is responsible for precisely managing the voltage sent to your fuel pump. When it fails, it can leave you stranded with a vehicle that won’t start, runs poorly, or stalls unexpectedly. This replacement module, part number 25785013, is the definitive solution to restore your vehicle’s reliability and performance.
The Critical Role of Your Avalanche Fuel Pump Module
In modern vehicles like your GM truck, the old-style fuel systems with a constant-pressure pump and a return line have been replaced by more efficient returnless systems. The heart of this system is the FPCM. It receives commands from the Engine Control Module (ECM) and then delivers a precise, variable voltage to the in-tank fuel pump. This allows the fuel pressure to be adjusted on the fly, improving efficiency and reducing emissions. However, because these modules are often mounted on the frame rail, they are exposed to harsh conditions—road salt, water, and debris—which leads to corrosion and eventual electronic failure.
From the Diagnostic Bay
We had a 2008 Sierra 1500 in the shop that was driving the owner crazy. It would run perfectly for days, then suddenly stall at a stoplight and refuse to restart for 20 minutes. There were no consistent trouble codes, just a random P069E pointing to the FPCM. We put it on the lift and found the module on the driver’s side frame rail. The aluminum casing was heavily corroded and pitted from years of exposure to winter road treatments. After replacing the module and cleaning the connector, the truck ran perfectly. The original module’s exposure to the elements had compromised its internal electronics, causing the intermittent failure that was so hard to pin down. It’s a story we’ve seen dozens of times.
Symptoms of a Failing FPCM
- ✔ Engine Stalling: The engine may stall intermittently, especially under load or when coming to a stop, and may be difficult to restart.
- ✔ No-Start Condition: You may hear the engine crank, but it will not fire up due to a lack of fuel pressure.
- ✔ Hesitation or Stumbling: During acceleration, the vehicle may hesitate or feel like it’s losing power as the module fails to command the correct fuel pressure.
- ✔ Check Engine Light: Diagnostic Trouble Codes (DTCs) such as P069E, P0230, or U0109 are common indicators of an FPCM circuit or communication failure.
- ✔ Reduced Power Mode: The vehicle may enter a “limp mode” to protect the engine, severely limiting speed and acceleration.
- ✔ Loud Fuel Pump: An FPCM that is sending erratic voltage can sometimes cause the in-tank fuel pump to whine or buzz loudly.
The Plug-and-Play Advantage: Programmed to Your VIN
Replacing an FPCM isn’t just a matter of swapping the part. These modules are vehicle-specific and require programming to communicate with your truck’s other electronic systems. Traditionally, this meant buying the part and then paying a dealership for an expensive programming session. We eliminate that step entirely. When you purchase this module, you provide us with your vehicle’s VIN. Our technicians will then program the module with the latest GM-sourced software specific to your exact vehicle configuration. When it arrives at your door, it’s a true plug-and-play solution. No extra trips, no extra fees, no hassle.
This module is a direct replacement for a wide range of original equipment part numbers, including: 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325. It ensures broad compatibility across numerous GM trucks and SUVs from the 2007-2009 model years. Please verify the fitment list to confirm it is the correct part for your vehicle.
Frequently Asked Questions
Do I need to get this module programmed?
No. The main benefit of this part is that we program it for you before shipping. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for installation with no further programming required.
Where is the FPCM located on my 2008 Avalanche?
On most compatible GM trucks and full-size SUVs like the Avalanche, Tahoe, and Silverado, the Fuel Pump Control Module is typically mounted to the driver’s side frame rail, roughly below the driver’s door area. It is exposed to the elements, which is a primary cause of its failure.
Can a bad FPCM cause my truck to not start?
Absolutely. A completely failed FPCM will not send power to the fuel pump, resulting in zero fuel pressure. The engine will crank but will not start, mimicking the symptoms of a failed fuel pump.
What is the difference between an FPCM and a fuel pump driver module?
The terms are often used interchangeably. Both refer to the electronic module that controls the voltage and speed of the electric fuel pump in a returnless fuel system. GM typically refers to it as a Fuel Pump Control Module (FPCM).
Is this a difficult part to install?
For someone with basic mechanical skills, the installation is straightforward. It typically involves disconnecting the negative battery terminal, safely raising the vehicle, locating the module on the frame rail, disconnecting the electrical connector, and removing a few bolts. The new module bolts in its place. Since our module is pre-programmed, no special electronic tools are needed.