Restore Full Electrical Function to Your GM Truck
Is your GMC Sierra, Chevrolet Silverado, or other GM truck plagued by bizarre electrical issues? The Body Control Module (BCM) is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating problems. This genuine quality GM Body Control Module, part number 25971916, is the definitive solution. It arrives pre-programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without requiring a trip to the dealership for expensive programming.
Symptoms of a Failing Sierra 2500 Body Control Module
A faulty BCM can manifest in numerous ways, often making diagnosis difficult. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to turn on.
- ✔ HVAC system malfunctions, such as the blower motor not working or temperature controls being unresponsive.
- ✔ The security system acting erratically, preventing the vehicle from starting.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Wipers behaving erratically or not working when commanded.
The Plug-and-Play Solution
The biggest hurdle in replacing a BCM is the need for vehicle-specific programming. We eliminate this step entirely. Simply provide your vehicle’s VIN during checkout, and our technicians will program this module with the latest GM software updates specific to your truck. This ensures all integrated systems communicate correctly from the moment you plug it in. This module is a direct replacement and interchanges with a wide range of part numbers, including 25844480, 25835966, 15943678, 20939137, 22860591, and more.
Installation and Post-Install Procedures
Physically installing your new Sierra 2500 Body Control Module is straightforward. It is typically located under the driver’s side dashboard, near the steering column. The process involves disconnecting the battery, removing a few trim panels, and swapping the electrical connectors. However, depending on your vehicle’s configuration, a couple of post-installation steps may be necessary:
- Airbag System Sync: If the airbag warning light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed. This requires a professional-grade scan tool and syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control functionality.
Frequently Asked Questions
What does a Body Control Module do on a 2007-2011 GMC Sierra?
The BCM acts as the main computer for your truck’s non-engine related functions. It controls the power windows, door locks, lighting, security system, wipers, HVAC fan speeds, and more, ensuring all these comfort and convenience features work as they should.
Is this module truly plug-and-play?
Yes, it is. We pre-program the module to your vehicle’s VIN before shipping. This means you won’t need to visit a dealer for programming, making the installation process much simpler and more cost-effective.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle.
Why is my airbag light still on after installing the new BCM?
This is a common security feature. The new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a compatible high-level scan tool to clear the light.
Will this fix my intermittent starting problem?
If your starting issue is related to the vehicle’s anti-theft or security system (Passlock/VATS), a new, correctly programmed BCM is often the solution, as it controls this critical function.