Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your truck? Flickering lights, unresponsive power windows, a dead HVAC system, or a security light that won’t turn off are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing issues. This genuine GM BCM, part number 25844480, is the definitive solution for a wide range of 2007-2013 GM trucks and SUVs, including the Chevrolet Silverado, Tahoe, GMC Sierra, and Cadillac Escalade.
From the Diagnostic Bay
We had a 2011 Sierra 2500 in the shop that was driving the owner crazy. The radio would turn on and off by itself, the driver’s side power lock was dead, and the climate control blower was intermittent. The owner had already replaced the blower motor resistor with no luck. After scanning for codes, we saw a handful of communication errors pointing back to the BCM. Before condemning the module, we did a thorough check of the main ground points under the dash and on the frame, as poor grounds can mimic BCM failure. The grounds were solid. We installed a VIN-programmed BCM, and instantly, every single issue was resolved. It’s a powerful reminder that this single module can restore sanity to your vehicle’s complex electrical system.
Is Your GM Truck or SUV Showing These Symptoms?
- ✔ Unresponsive or intermittent HVAC and climate controls.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Interior or exterior lights acting erratically or not turning on.
- ✔ Airbag warning light illuminated, often with DTC B1001.
- ✔ Security system malfunctions, causing no-start or stalling conditions.
- ✔ A variety of seemingly unrelated diagnostic trouble codes (DTCs).
Plug-and-Play Solution: Your 2013 Silverado 3500 Body Control Module
Forget expensive dealership visits and complex programming procedures. We take the hassle out of the repair by pre-programming this BCM directly to your vehicle’s VIN. This ensures that when the part arrives, it’s ready for a true plug-and-play installation. It will have the latest GM software updates and will communicate seamlessly with your vehicle’s other electronic modules right out of the box. This is the most efficient way to get your truck back to 100% functionality.
Installation and Post-Install Considerations
The BCM is typically located under the driver’s side dashboard, near the steering column, making for a quick replacement that often takes less than 15 minutes. While the module is plug-and-play for most functions, be aware of two potential post-installation procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a technician will need to use a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide array of part numbers, including: 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25835966, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591.
Frequently Asked Questions
What does a Body Control Module do on a Silverado?
The BCM acts as the central computer for your truck’s body electronics. It controls functions like power windows, door locks, interior and exterior lighting, the security system, wipers, and the HVAC system.
Do I need to have this BCM programmed by a dealer?
No. This Body Control Module comes pre-programmed to your vehicle’s specific VIN. This allows for a simple plug-and-play installation without requiring any additional dealership programming.
My airbag light is on after installing the new BCM. What do I do?
This is a common occurrence. You will need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the existing airbag control module (SDM) and will turn off the light.
Where is the BCM located on a 2013 Silverado 3500?
The BCM is located inside the cabin, under the driver’s side of the dashboard, typically near the steering column.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module without needing to send it back.