Is Your GM Truck Plagued by Electrical Gremlins?
If your 2007-2011 GMC Sierra 2500, Chevrolet Silverado, or other compatible GM truck is experiencing bizarre electrical issues like flickering lights, malfunctioning power windows, a dead HVAC system, or random warning lights, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central computer for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This genuine GM BCM, part number 25844480, is the definitive solution to restore your truck’s full functionality and reliability.
The Plug-and-Play Solution for Your Sierra 2500 BCM
Don’t waste time and money at the dealership. We take the hassle out of BCM replacement by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN). This means it arrives at your door ready for a direct, plug-and-play installation. Simply locate the old module under the steering column, swap it with your new one, and you’re back on the road. All the latest GM software updates are applied during programming, ensuring optimal performance and communication with your truck’s other electronic systems.
Common Symptoms of a Failing GM BCM
- ✔ Intermittent or non-functional power windows, door locks, or interior/exterior lights.
- ✔ HVAC blower motor not working or climate controls are unresponsive.
- ✔ Airbag warning light is illuminated, often with Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system malfunctions, causing no-start conditions or random alarm activation.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Wipers behaving erratically or not working at all.
Post-Installation Procedures
While installation is straightforward, some vehicles may require additional steps. If your airbag light remains on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, a ‘Brake Pedal Position Relearn’ may be necessary to ensure proper brake light and traction control operation. These procedures are simple for any qualified technician with the right equipment.
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, 25971917, 15901388, 20939137, 20939138, and 22860591.
Frequently Asked Questions
Do I need to take this BCM to the dealer for programming?
No. This Body Control Module is delivered fully programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you a costly trip to the dealership.
Where is the BCM located on my 2008 GMC Sierra?
The BCM is typically located under the driver’s side dashboard, near the steering column. Installation usually takes less than 15 minutes with basic hand tools.
Will this fix my airbag light with code B1001?
A faulty BCM is a common cause of the B1001 code. Replacing it often resolves the issue, but you may need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to sync the new BCM with the airbag system and clear the light.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module without any hassle or need to return it.
What if this part doesn’t fix my problem?
We stand behind our parts with a one-year warranty. If you’ve correctly diagnosed the issue as a faulty BCM, this part will solve it. If problems persist, it may indicate other issues in the vehicle’s electrical system, such as wiring or grounding faults.