Is your 2008-2009 Sierra Denali experiencing frustrating fuel delivery issues like stalling, hesitation, or a complete no-start condition? Before you condemn the fuel pump, the real culprit is often a failed Fuel Pump Control Module (FPCM). As a technician with over two decades of experience, I’ve seen this exact scenario countless times. The FPCM, also known as a fuel pump driver module, is the brain that regulates the voltage sent to your fuel pump. When it fails, it can starve your engine of fuel, leading to poor performance and leaving you stranded.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and extra cost out of the repair by pre-programming this module to your truck’s specific Vehicle Identification Number (VIN). This means it arrives at your door with the latest GM software updates already installed, eliminating the need for an expensive trip to the dealership for programming. This is the most reliable and efficient way to restore proper function to your vehicle’s fuel system and get your truck running like it should.
Case Study: A Tricky Diagnosis
A customer brought in his ’08 Silverado with a classic complaint: it would crank but not start, and occasionally it would stall while driving. He had already replaced the fuel pump, but the problem persisted. His scanner showed a P069E code (Fuel Pump Control Module Commanded OFF). Instead of throwing more parts at it, we went straight to the FPCM, located on the driver-side frame rail. These modules are exposed to road salt, water, and vibration, causing internal corrosion and failure. We swapped in a VIN-programmed module, and the truck fired right up and ran perfectly. This simple part saved the customer from hundreds more in unnecessary repairs.
Common Signs of a Failing FPCM
If your truck is showing these symptoms, a faulty fuel pump control module is a likely cause. A failing module can often be mistaken for a bad fuel pump, so checking for these specific signs and codes can save you time and money.
- ✔ Engine cranks but will not start
- ✔ Stalling, especially under load or during acceleration
- ✔ Rough idling or engine hesitation
- ✔ Reduced engine power and poor fuel economy
- ✔ Check Engine Light with codes like P069E, P0230, or P2635
A Straightforward Guide to Installation
Installing your new 2008-2009 Sierra Denali Fuel Pump Module is a job most DIYers can handle in their own driveway. Since this module comes pre-programmed, no special electronic tools are required.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On most GMT900 trucks like the Sierra, the FPCM is mounted to the driver-side frame rail, typically near the spare tire.
- Disconnect and Remove: Carefully unplug the electrical connector. Be gentle to avoid breaking the locking tab. Then, remove the bolts or nuts holding the old module to the frame.
- Install the New Module: Mount your new, pre-programmed module in the same location. It’s a good practice to clean the mounting surface and apply a thin layer of dielectric grease to the connector pins for corrosion protection.
- Reconnect and Test: Securely plug in the electrical connector and re-attach the negative battery terminal. Turn the key to the ‘On’ position for a few seconds to let the system prime, then start the engine.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM 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 / Colorado: 2009
- Enclave: 2009
- Escalade / ESV / EXT: 2008-2009
- Express / Savana 1500 Van: 2008-2009
- Hummer H2 / H3: 2008-2009
- Outlook: 2009
- Sierra / Silverado 1500 Pickup: 2007 (New Body Style), 2008-2009
- Sierra Denali: 2008-2009
- Suburban 1500: 2008-2009
- Tahoe: 2008-2009
- Traverse: 2009
- Vue: 2008-2009
- Yukon / Yukon XL 1500: 2008-2009
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit VIN. We will program the module with the latest GM software specific to your vehicle before shipping it out.
Is this part difficult to install?
Not at all. Since the module comes pre-programmed, it’s a direct plug-and-play replacement. Basic hand tools are all that’s required, and most people can complete the job in under an hour.
What happens if I install it without programming?
An unprogrammed module will not communicate correctly with your vehicle’s other computers, resulting in a no-start condition and setting fault codes. Our service eliminates this problem entirely.
Where is the FPCM located on my 2009 Sierra Denali?
You’ll find the Fuel Pump Control Module mounted on the driver’s side frame rail, typically above the spare tire. Its location makes it susceptible to weather and corrosion, which is a common cause of failure.
Is this a better option than buying one from a local parts store?
Yes, because a part from a local store will not be programmed. You would still need to take your vehicle to a dealership or a shop with advanced scan tools for programming, adding significant cost and hassle to the repair. Our module is a complete, ready-to-go solution.