Restore Peak Performance and Reliability to Your GM Truck
If your 2008-2009 Sierra Denali is suddenly stalling, hesitating during acceleration, or refusing to start, the culprit is often a failing Fuel Pump Control Module (FPCM), also known as a Fuel System Control Module (FSCM). This small but critical component regulates the voltage sent to your fuel pump, ensuring your engine receives the precise amount of fuel it needs under all driving conditions. When it fails, it can leave you stranded and facing a frustrating diagnostic process. In my 20+ years in the shop, I’ve seen countless GM trucks with these exact symptoms, and a faulty FPCM is one of the most common causes.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and expensive dealership trips out of the equation. By providing us with your vehicle’s VIN at checkout, we will program this module with the latest GM software updates specific to your truck. This ensures seamless communication with your vehicle’s computer systems and restores original performance and fuel efficiency. Don’t settle for a generic part that requires additional programming fees. Get the right part, programmed correctly, the first time.
Case Study: A Tricky Diagnosis
A customer brought in his ’08 Silverado with an intermittent no-start condition. It would crank but not fire. Other times, it would stall at a stoplight. He had already replaced the fuel pump, but the problem persisted. His scanner showed a P069E code. We hooked up our diagnostic tool and monitored the commanded fuel pressure versus the actual fuel pressure. The commanded pressure was steady, but the actual pressure was erratic, dropping to zero intermittently. This pointed directly to the FPCM, which is mounted on the frame rail and exposed to the elements. We installed a new, pre-programmed module, and the truck ran perfectly. This case highlights how a failing 2008-2009 Sierra Denali FPCM can mimic a bad fuel pump, making proper diagnosis key.
Is Your Truck Showing These Symptoms?
A failing FPCM can manifest in several ways. If you’re experiencing any of the following, it’s time to inspect your fuel pump control module. Common diagnostic trouble codes (DTCs) associated with this failure include P069E, P0230, and U0109.
- ✔ Engine cranks but will not start
- ✔ Stalling, especially when coming to a stop or at idle
- ✔ Severe engine hesitation or sputtering during acceleration
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light is illuminated
A Straightforward Guide to Installation
Replacing the FPCM is a job most DIYers can handle with basic tools. On most compatible trucks and SUVs, including your 2008-2009 Sierra Denali FPCM, the module is located on the driver’s side frame rail, near the spare tire.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: Find the FPCM on the vehicle’s frame crossmember. It’s a small, black box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note their orientation. Then, unbolt the module from the frame. These bolts can sometimes be rusty, so a little penetrating oil can help.
- Install the New Module: Bolt the new, pre-programmed FPCM into place. Reconnect the electrical connectors securely.
- Final Step: Reconnect the negative battery terminal. The vehicle is now ready to start. Since the module is pre-programmed, no further steps are needed.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. It is compatible with part numbers 13501024, 15213110, 20759945, 20850907, 25785013, 25854536, 25866052, and 25967325. Please verify your vehicle is on the list below for guaranteed fitment.
- ACADIA 2009
- AVALANCHE 1500 2008-2009
- CANYON 2009
- COLORADO 2009
- ENCLAVE 2009
- ESCALADE & ESV & EXT 2008-2009
- EXPRESS 1500 VAN 2008-2009
- HUMMER H2 2008-2009
- HUMMER H3 2009
- OUTLOOK 2009
- SAVANA 1500 VAN 2008-2009
- SIERRA 1500 PICKUP 2007 (New Body Style)
- SIERRA 1500 PICKUP 2008-2009
- SIERRA DENALI 2008-2009
- SILVERADO 1500 PICKUP 2007 (New Body Style)
- SILVERADO 1500 PICKUP 2008-2009
- SUBURBAN 1500 2008-2009
- TAHOE 2008-2009
- TRAVERSE 2009
- VUE 2008-2009
- YUKON & YUKON XL 1500 2008-2009
Frequently Asked Questions
Why do you need my VIN to program the module?
Your VIN allows us to access the specific GM software and calibration files for your vehicle’s exact configuration. This ensures the FPCM works perfectly with your engine, transmission, and other systems, preventing compatibility issues and error codes.
What is a Fuel Pump Control Module (FPCM)?
The FPCM is a small computer that precisely controls the speed of your electric fuel pump. Instead of running the pump at full speed all the time, the FPCM adjusts its voltage based on engine demand, which improves efficiency and extends the life of the fuel pump.
Is this part difficult to replace myself?
For most DIYers with basic hand tools, this is a straightforward repair. The module is typically mounted on the frame rail and is accessible from underneath the vehicle. Since our module comes pre-programmed, you avoid a complicated trip to the dealer for software flashing.
Will this fix a P069E check engine light code?
Yes, a P069E code (Fuel Pump Control Module Commanded On) is a very common indicator of a failed FPCM. While you should always perform a full diagnosis, replacing a faulty FPCM is the direct solution for this code in most cases.
What happens if I don’t replace a failing FPCM?
Ignoring a failing FPCM can lead to worsening symptoms, including frequent stalling in dangerous situations (like traffic), a no-start condition that leaves you stranded, and potential damage to your fuel pump from erratic voltage.