Restore Full Electronic Functionality to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your Chevrolet Silverado, GMC Sierra, or Cadillac Escalade? Intermittent power windows, a malfunctioning HVAC system, or random warning lights are often symptoms of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of confusing and disruptive issues. This genuine quality GM Body Control Module, part number 25844480, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
From the Diagnostic Bay
We had a 2009 Sierra 2500 in the shop that was driving its owner crazy. The radio would turn off, the door locks would cycle randomly, and the blower motor worked only when it wanted to. The owner had already replaced the blower motor resistor and the master window switch with no success. After a quick scan, we saw multiple communication codes pointing to a network issue. We went straight to the BCM, checked its power and ground connections, and found the module itself was failing internally. Installing a VIN-programmed BCM like this one solved every single issue in under 10 minutes. It’s often the root cause that gets overlooked.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Power windows, door locks, or interior/exterior lights not working correctly.
- ✔ HVAC controls are unresponsive or the blower motor operates intermittently.
- ✔ The security system is malfunctioning, causing no-start or stalling conditions.
- ✔ An airbag warning light is illuminated, often with DTC B1001.
- ✔ Strange electrical behavior, such as wipers activating on their own or gauges acting erratically.
- ✔ Multiple communication-related Diagnostic Trouble Codes (DTCs) are stored.
Why Choose Our Pre-Programmed GM Body Control Module?
Getting your truck or SUV back on the road shouldn’t require a complicated, expensive trip to the dealership. Our service eliminates that step. We program this module with the latest GM software updates using your vehicle’s VIN before it ships. This ensures that all factory-calibrated settings for your specific options are loaded and ready to go. Simply install the module, and in most cases, you’re done. This direct replacement restores the critical communication pathways between your vehicle’s various electronic systems, ensuring everything works as the factory intended.
Installation is Simple: The BCM is typically located under the driver’s side dash, near the steering column. The replacement process usually takes less than 15 minutes. While the installation is straightforward, please be aware of potential post-installation procedures. If the airbag warning light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, some models may require a ‘Brake Pedal Position Relearn’. There is no core charge, so you can keep your old part without any hassle.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, and more.
Frequently Asked Questions
What does a Body Control Module do on a GM vehicle?
The BCM acts as the main computer for the vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC system.
Is this BCM truly plug-and-play?
Yes, because we program it to your vehicle’s VIN before shipping, it is ready for installation without needing a trip to the dealer for programming. In some cases, minor relearn procedures may be required post-installation.
My airbag light is on after installing. What do I do?
This is a common security measure. You will need a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system and will turn off the light.
How do I know if my BCM is the problem?
Common signs include multiple, unrelated electrical issues happening at once. For example, if your power locks, interior lights, and radio all stop working, the BCM is a likely culprit. A diagnostic scan for B-series (Body) or U-series (Communication) codes can also point to a faulty BCM.
Where is the BCM located on my Silverado/Tahoe/Sierra?
On most 2007-2013 GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, often to the left of the steering column.