Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your Chevrolet Silverado, GMC Sierra, or Tahoe? Intermittent power windows, a malfunctioning security system, a dead HVAC blower, or stubborn warning lights are classic signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it falters, it can cause a cascade of confusing and disruptive issues. This genuine OEM-quality GM BCM, part number 25971916 (interchangeable with 25844480 and others), is the definitive solution to restore your vehicle’s proper operation.
We had a 2009 Silverado 1500 in the shop that was driving the owner crazy. The radio would turn on by itself, the door locks would cycle randomly while driving, and the A/C would only work occasionally. The customer had already replaced the battery and checked fuses with no luck. After scanning the vehicle, we found multiple communication loss codes with various modules. We traced the issue to a faulty BCM that was corrupting the data bus. Installing a VIN-programmed BCM like this one resolved all the bizarre electrical issues in under 15 minutes, saving the customer from a costly and lengthy diagnostic process at the dealership.
Is Your Silverado’s BCM Failing?
- ✔ Power windows, door locks, or interior/exterior lights not working or operating erratically.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The security system malfunctions, causing no-start conditions or false alarms.
- ✔ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Wipers or other accessories activating on their own or not working at all.
Solving Issues with a 2007-2011 Silverado Body Control Module
Don’t let a faulty module keep your truck off the road or make it unreliable. This unit is the key to a lasting repair. We take the guesswork and hassle out of the process by pre-programming the module to your vehicle’s specific VIN. This crucial step ensures that all vehicle options are correctly configured and that the BCM communicates flawlessly with the other modules in your truck, like the Engine Control Module (ECM) and Instrument Panel Cluster (IPC). This means no expensive trips to the dealership for programming—it’s a true plug-and-play solution.
Installation and Post-Install Considerations
Physically installing the BCM is straightforward. It’s typically located under the driver’s side dashboard, near the steering column. The process usually takes just a few minutes. However, in some cases, additional electronic steps may be required after installation:
- Airbag System Sync: If the airbag warning light remains on after installation, a procedure called “Setup SDM Primary Key in BCM” 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 correct brake light operation and to satisfy the traction control system.
This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 20939137, 22860591, and more, ensuring broad compatibility across the GM truck and SUV lineup from 2007-2013. By choosing our VIN-programmed 2007-2011 Silverado Body Control Module, you’re getting a reliable part that restores factory functionality and peace of mind.
Frequently Asked Questions
What does a Body Control Module do on a Silverado?
The BCM is a computer that controls and monitors most of your truck’s non-engine-related electronic functions. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC climate control system.
Is this BCM ready to install out of the box?
Yes. We pre-program the module using your vehicle’s VIN before shipping. This ensures it is configured for your truck’s specific options and allows for a simple plug-and-play installation without needing a trip to the dealer.
Why is my airbag light still on after installing the new BCM?
This is typically due to the new BCM needing to be electronically ‘introduced’ to the airbag system’s main computer (SDM). A technician with a high-level scan tool will need to perform the “Setup SDM Primary Key in BCM” procedure to sync the modules and clear the light.
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 additional fees or hassle.
Where is the BCM located on a 2008 Silverado?
On the 2007-2013 GM truck and SUV platform, the Body Control Module is typically located under the driver’s side of the dashboard, to the left of the steering column.