Is Your GM Truck or SUV Stalling, Hesitating, or Refusing to Start?
If you’re experiencing erratic engine behavior in your 2007-2009 GM vehicle, the culprit might not be the fuel pump itself, but the small computer that controls it. The Fuel Pump Control Module (FPCM), also known as a Fuel System Control Module (FSCM), is a critical component responsible for managing the voltage supplied to your vehicle’s fuel pump. When it fails, it can cause a host of frustrating and potentially dangerous issues, leaving you stranded. This genuine GM Fuel Pump Module, part number 25854536, is the definitive solution to restore proper fuel delivery and engine performance.
From the Diagnostic Bay
I once had a 2008 Silverado 1500 towed in with a classic ‘crank-no-start’ condition. The owner had just spent a weekend dropping the fuel tank and replacing the in-tank fuel pump, only to have the exact same problem. His frustration was palpable. He was convinced he got a bad pump. We hooked up the scanner and immediately found code U0109 – Lost Communication with Fuel Pump Control Module. A quick check of the FPCM, mounted on the frame rail, revealed heavy corrosion on the housing and connector. The original module had failed due to water and road salt intrusion. We installed one of these pre-programmed modules, cleared the codes, and the truck fired up on the first try. The customer learned a tough lesson: always diagnose before replacing parts. The FPCM is a much more common failure point on these trucks than the pump itself.
Diagnosing a Faulty GM Fuel Pump Module
A failing FPCM doesn’t always result in a complete no-start situation. The symptoms can be intermittent at first, making diagnosis tricky. The module’s job is to precisely regulate fuel pressure by varying the speed of the fuel pump. When it malfunctions, the fuel system pressure becomes unstable, leading to a variety of driveability problems. If you’re noticing any of the following signs, it’s time to inspect your FPCM.
Common Symptoms of FPCM Failure
- âś” Engine stalling, especially under load or when coming to a stop.
- âś” Intermittent no-start or extended cranking time before the engine fires.
- âś” Engine hesitation or stumbling during acceleration.
- âś” Rough idling or a fluctuating idle RPM.
- âś” Reduced engine power and poor fuel economy.
- âś” Check Engine Light illuminated with codes like P069E, P0230, or U0109.
- âś” A fuel pressure gauge showing erratic or low pressure readings.
The Plug-and-Play Solution: Pre-Programmed for Your VIN
One of the biggest hurdles in replacing modern vehicle electronics is the need for expensive, dealer-level programming. This module eliminates that step entirely. We take the hassle and expense out of the repair by professionally programming this module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that it communicates perfectly with your vehicle’s other computers, like the Engine Control Module (ECM), right out of the box. No trip to the dealership, no special tools, just a straightforward installation to get you back on the road.
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 fits dozens of popular GM models from 2007 to 2009, such as the Chevrolet Silverado, Tahoe, Suburban, GMC Sierra, Yukon, Cadillac Escalade, and more. Please verify the fitment list to ensure compatibility with your exact vehicle.
Frequently Asked Questions
Do I need to get this module programmed?
No. The main benefit of our service is that this module comes pre-programmed to your specific vehicle. You must provide us with your 17-digit VIN after purchase so we can load the correct GM software and vehicle calibrations before shipping. This makes installation a simple plug-and-play process.
Where is the FPCM located on my vehicle?
The location varies slightly by model. On most trucks and large SUVs (Silverado, Sierra, Tahoe, Escalade), it is typically mounted on the driver’s side frame rail, often near the spare tire. On other vehicles like the Colorado/Canyon, it’s on a rear center frame crossmember. It’s exposed to the elements, which is a primary reason for its failure.
Is this a difficult part to replace?
For someone with basic mechanical skills, this is a relatively straightforward replacement. It typically involves disconnecting the negative battery terminal, unplugging the electrical connector, and removing a few bolts that hold the module to the frame. Accessing it is usually the most challenging part. No special tools are required.
What causes the original GM Fuel Pump Module to fail?
The most common cause of failure is environmental exposure. Since it’s mounted on the vehicle’s frame, it is constantly subjected to water, road salt, and dirt. Over time, this can cause corrosion on the aluminum housing and compromise the internal electronics or the electrical connector pins, leading to malfunction.
Will this fix a Check Engine Light with code P069E?
Yes, Diagnostic Trouble Code (DTC) P069E (Fuel Pump Control Module Commanded On) is one of the most common codes indicating a faulty FPCM. While you should always perform a full diagnosis, a failing module is the primary cause for this specific code.