If your 2013-2014 GMC Savana 1500 is suddenly stalling, struggling to start, or throwing a check engine light, the problem often isn’t the fuel pump itself—it’s the component that controls it. As a technician with over two decades of experience, I’ve seen countless vehicle owners replace a perfectly good fuel pump only to find the issue persists. The real culprit is frequently a faulty Fuel Pump Control Module (FPCM), also known as a Fuel System Control Module (FSCM).
This module is the brain behind your fuel delivery system. It receives commands from the Engine Control Module (ECM) and precisely regulates the voltage sent to the fuel pump. This ensures your engine gets the exact amount of fuel it needs, whether you’re idling at a stoplight or hauling a heavy load. When the FPCM starts to fail, it can lead to erratic fuel pressure, causing a host of frustrating and potentially dangerous driving issues.
Is Your Van Showing These Symptoms?
A failing FPCM can mimic other fuel system problems, but there are some tell-tale signs I look for in the diagnostic bay. If you’re experiencing any of the following, this module is your most likely solution:
- âś” Engine cranks for a long time before starting
- âś” Stalling, especially when coming to a stop or under load
- âś” Hesitation or stumbling during acceleration
- âś” Reduced engine power and poor fuel economy
- âś” A persistent Check Engine Light with codes like P069E, P0230, or U0109 (Loss of Communication with FPCM)
A Technician’s Notebook: The Ghost in the Machine
I remember a 2013 Sierra 1500 (which uses this exact same module) that came into my shop with an intermittent no-start condition that was driving the owner crazy. It would run fine for days, then refuse to start. By the time the tow truck arrived, it would fire right up. There were no hard codes, just a history code for U0109. After checking wiring and grounds, I focused on the FPCM mounted on the frame rail. These modules are exposed to heat, moisture, and vibration, which can cause internal circuits to fail intermittently. We replaced the FPCM with a pre-programmed unit, and the customer never had the issue again. It’s a classic failure pattern for these parts.
The Simple, Cost-Effective Solution
The biggest headache with replacing an FPCM used to be the mandatory trip to the dealership for programming, which can cost you hundreds of dollars and a day without your vehicle. We eliminate that step entirely. This 2013-2014 Savana 1500 Fuel Pump Control Module arrives at your door completely programmed with the latest GM software, matched specifically to your vehicle’s VIN. It’s a true plug-and-play fix that saves you time and money.
A Straightforward Guide to Installation
For the Savana and Express vans, this is a job most DIYers can handle with basic tools in under an hour. The module is typically located on the driver-side frame rail.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: Find the FPCM mounted to the inside of the driver-side frame rail, usually near the spare tire area.
- Disconnect: Carefully unplug the electrical connectors. Use a small flathead screwdriver to gently release the locking tabs if they are stuck.
- Remove the Old Module: Unbolt the old module from the frame. It’s typically held on by two or three small bolts.
- Install the New Module: Bolt your new, pre-programmed FPCM into place. Ensure it is securely mounted.
- Reconnect and Test: Plug the electrical connectors firmly into the new module until they click. Reconnect your battery terminal and cycle the key a few times before starting the engine to prime the system.
Verified Vehicle Compatibility
This module, part number 20964304 (also compatible with 20964305), is a direct-fit replacement for a wide range of GM vehicles. Please verify your model and options below:
- Acadia: 2013-2014 (rear crossmember)
- Avalanche 1500: 2013 (LH frame rail, w/o integrated trailer brake control)
- CTS: 2013-2015 (Coupe, Sedan, Wagon – various locations, check notes)
- Enclave: 2013-2014 (rear crossmember)
- Escalade / ESV / EXT: 2013-2014 (LH frame rail, w/o integrated trailer brake control)
- Express 1500 Van: 2013-2014 (LH frame rail)
- Impala / Impala Limited: 2013-2016 (RH rear quarter panel)
- Savana 1500 Van: 2013-2014 (LH frame rail)
- Sierra 1500 / Denali 1500: 2013 (LH frame rail, w/o integrated trailer brake control)
- Silverado 1500: 2013 (LH frame rail, w/o integrated trailer brake control)
- Suburban 1500: 2013-2014 (LH frame rail, w/o integrated trailer brake control)
- Tahoe: 2013-2014 (LH frame rail, w/o integrated trailer brake control)
- Traverse: 2013-2014 (rear crossmember)
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to program the module with the correct GM software and calibrations for your specific vehicle. This ensures perfect compatibility and function without any need for dealership programming.
Is this part difficult to install?
For most trucks and vans like the Savana, it’s a straightforward installation. The module is located on the frame rail and requires only basic hand tools to replace. It’s a great project for a confident DIYer.
How do I know if my FPCM is bad and not my fuel pump?
While symptoms can overlap, FPCM failure is often intermittent and may be accompanied by specific communication codes like U0109. A mechanic can test fuel pressure and command the pump with a scan tool to confirm, but if you’re experiencing stalling and long cranks, the FPCM is a very common point of failure on these vehicles.
What does ‘w/o integrated trailer brake control’ mean in the fitment list?
On some GM trucks and SUVs, the factory integrated trailer brake controller (TBC) can affect which FPCM is used. This module is for vehicles that did NOT come with the factory-installed TBC option from the dashboard.
Is this a new part?
This is an excellent, fully tested, and guaranteed functional part that has been programmed with the latest software from GM. It will restore your vehicle’s operation to factory specifications.