Are you battling frustrating electrical gremlins in your GM truck or SUV? Flickering lights, malfunctioning power windows, a dead HVAC system, or a persistent airbag light are common signs that your Body Control Module (BCM) has failed. The BCM is the central nervous system for your vehicle’s comfort and convenience features. When it goes bad, it can cause a cascade of seemingly unrelated problems. This OEM-quality Body Control Module, interchangeable with part number 15263497 and 25844480, is the definitive solution for restoring your vehicle’s electronic systems to perfect working order.
This isn’t just a replacement part; it’s a complete, plug-and-play solution. We pre-program each module to your vehicle’s specific VIN before shipping. This critical step ensures seamless integration with your truck’s existing systems, eliminating the need for an expensive and time-consuming trip to the dealership for programming. Simply install the module, and you’re ready to go.
Common Symptoms of a Failing GM BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. This replacement module is designed to resolve these exact issues:
- ✔ Unresponsive or intermittent HVAC and climate controls.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system acting up, causing no-start or stalling conditions.
- ✔ An illuminated airbag warning light, often with a B1001 diagnostic trouble code.
- ✔ Exterior or interior lights staying on, not turning on, or flickering randomly.
- ✔ Communication errors with other vehicle modules.
Solving Issues with Your Sierra Denali Body Control Module
This module is engineered to be a direct-fit replacement, restoring the performance and reliability you expect from your vehicle. Located under the driver’s side dash, installation is straightforward for a DIYer or any professional technician. While the process is typically plug-and-play, be aware of potential post-installation procedures. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. In some cases, a ‘Brake Pedal Position Relearn’ may also be required to ensure proper brake light and traction control operation. By choosing our VIN-programmed module, you are bypassing the most difficult part of the repair—the software setup.
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
What does a Body Control Module do on a GMC Sierra?
The BCM acts as the main computer for your truck’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, HVAC, and the security system.
Is this BCM ready to install out of the box?
Yes! We pre-program the module to your vehicle’s VIN before it ships. This makes it a true plug-and-play part, with no need for additional dealership programming.
Where is the BCM located on a 2007-2010 Sierra Denali?
The BCM is typically located under the driver’s side of the dashboard, near the steering column. Installation usually takes less than 15 minutes.
Will this Sierra Denali Body Control Module fix my airbag light?
It will fix the BCM-related causes of an airbag light (like DTC B1001). However, after installation, you may need a technician with a high-level scan tool to perform an ‘SDM Key Sync’ to get the new BCM and the airbag module to communicate.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep or dispose of your old module without any hassle.