Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating and unpredictable electrical problems in your GMC Sierra, Chevy Silverado, or Tahoe? Flickering lights, unresponsive power windows, a malfunctioning security system, or a dead HVAC system 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 issues that are difficult to diagnose. This genuine GM Body Control Module, part number 25844480, is the definitive solution to restore your vehicle’s functionality and reliability.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights behaving erratically, staying on, or not turning on.
- ✔ HVAC controls are unresponsive, or the blower motor won’t function correctly.
- ✔ The vehicle’s security system malfunctions, causing no-start conditions or false alarms.
- ✔ An illuminated airbag warning light, often with Diagnostic Trouble Code (DTC) B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Communication errors with other vehicle modules reported by a diagnostic scanner.
The Plug-and-Play Solution: Your 2013 Sierra Body Control Module
Forget expensive dealership visits and the hassle of post-installation programming. We simplify the repair process by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the BCM communicates flawlessly with your truck’s existing systems right out of the box. It arrives loaded with the latest GM software updates, ensuring optimal performance and resolving common electronic glitches. This is a direct-fit replacement, designed to meet or exceed original equipment standards for a lasting repair.
Installation & Post-Install Considerations
Physically installing the BCM is straightforward. It is typically located under the driver’s side dashboard, near the steering column, and can often be swapped in under 5 minutes. However, depending on your vehicle’s specific configuration, some post-installation procedures may be necessary.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a technician will need to use a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This 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 relearn to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide range of part numbers, including: 15263497, 25835966, 15263363, 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 have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It is ready for installation upon arrival, saving you a trip to the dealership and additional programming fees.
Where is the BCM located on my 2013 Sierra?
The Body Control Module is typically found under the driver’s side of the dashboard, often attached to a bracket near the steering column or the junction block.
What happens if my airbag light is on after I install this?
This is a common occurrence. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A qualified technician with a high-level scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this a reliable part?
Absolutely. This is a genuine OEM-quality component built to strict factory specifications for durability and performance. It also comes with a one-year warranty for your peace of mind.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without any obligation to return it.